Version 2.16.14

This version adds a few new small features:

• Look on the host system to find fonts requested by text subtitle files (#2264).
• Allow sending KDMs to more email addresses (#2244).
• Preserve export video settings in the config (#2259).

and also fixes some bugs:

• Fix invalid subtitles in DCPs in some cases when multiple overlapping source subtitle files exist (#2268).
• Fix incorrect burnt-in subtitle colours when burning into a DCP source (#2261).
• Fix strange multi-selection behaviour on Linux (#2269).
• Fix some cases in the disk writer where errors could happen but not be reported.
• Make jump-to-first-subtitle also work with DCP subs.
• Improve accuracy of subtitle font sizing.
• Make subtitle asset filename obey custom settings (#2260).
• Fix some crashes when audio output is disabled / unavailable.
• Hide audio sample rate option in DCP panel unless the advanced option is enabled.

Thanks to our patrons:

• LightBender Post
• Drop-Out Cinema
• Pilotkino LLC
• Root & Rust Creative

and subscribers:

• Jussi Siponen
• Zbigniew Kamiński
• Film.Ca Inc.
• Central Cinema
• Timm Kröger
• José Delio Ares García
• Owen Morgan
• Glyndebourne
• Mark Allender
• John B. Thomas
• Sem Rumo - Projetos Audiovisuais
• Barak Epstein
• Luiz Amoasei
• Gerard Elmore
• Irving Shapiro
• Jeremy Spracklen
• Carlos Lagido
• Sky Hopinka
• Lichtspiele Kalk
• Austrian Film Museum
• 屹 崔
• Ross Meyer
• Luke Granger-Brown

Version 2.16.13

This release only fixes some dependency errors on Ubuntu 22.04, and some slightly strange behaviour in the command-line client.

Version 2.16.12

This release fixes some bugs:

• Crash on using OpenGL rendering on macOS (#2258).
• Error when loading encrypted DCPs into the main DCP-o-matic or the player (#2257).
• Audio fades not stored in templates (#2254).
• Errors on auto-crop in some cases.
• Failure to build on Debian 9.

Version 2.16.11

This release has two major translation updates:

• Updated pl_PL translation from Michał Tomaszewski.
• Updated zh_CN translation from Dian Li.

There are also some bug fixes:

• Fix some numeric errors when doing inverse gamma transforms.
• Fix errors when using non-ASCII characters in command-line arguments on Windows (#2248).
• Add new screen to the right place just after adding a new cinema (#2249).
• Fix blank screen on starting the disk writer in sv_SE (#2243).
• Fix various errors when using separate-3D content (#2246).

...and some new features:

• Speed up content selection when we have audio analysis files (#2247).
• Improve code to find missing files (#1940).
• Add more filenames to content properties (#2120).
• Add preference for default KDM duration (#2224).
• Add CPL_FILENAME variable for cover sheets (#2107).

Version 2.16.10

This release has several bug fixes:

• Fix hanging subtitles in some cases (#2239).
• Fix failure to play files which contain multiple streams marked as video (#2238).
• Display encrypted content as black when we have no key (#2234).
• Fix incorrect country codes in ISDCF names in some cases (#2235).

There are also some new features:

• Builds added for Ubuntu 22.04 and Fedora 36.
• There is (currently quite simple) new tool: the “DCP-o-matic Editor”, which allows editing of some DCP metadata.
• DCP digest files are created when a DCP is made (#2109).
• Primitive auto-crop (#1477).
• Add option to save a player frame to a file (#2133).
• Basic display of markers above the playback timeline (#1921).
• Add button to use same fades for audio as video (#2230).
• An asterix (*) is put in the title bar when the DCP-o-matic project is modified (#1938).
• Allow 96kHz audio as an advanced option (#1789).

Version 2.16.9

This release has two bug fixes:

• Video range is set up more intelligently when importing 2.14.x project (#2227).
• Fix for crashes at the end of exports, or noise at the end of exported files, in some cases (#2223).

There are also two new features:

• Add fade in/out option to the content audio tab (#1026).
• Add button to send test emails in the mail server prefs (#2216).

Version 2.16.8

This release has several bug fixes:

• Remove erroneous <EntryPoint> and <Duration> tags from <MainMarkers> sections (#2215).
• Fix incorrect errors when resolving assets in some cases (#2221).
• Fix error about over-full buffers when previewing projects with audio delays (#2217).
• Fix sorting of cinemas in some locales (#2208).
• Fix UTF-8 encoding of email subjects and attachment names (#2207).
• Fix writing KDMs with long filenames on Windows.
• Fix some assertion failures in the KDM creator.
• Make the value used for f in KDM names consistent (#1657).
• Fix the sensitivity of the custom scale edit button.

and some new features:

• Subtitle XML is now more ‘prettily’ formatted, to avoid problems with some projection systems that presumably depend on line breaks in the XML (#2205).
• Screens to make KDMs for are chosen by checkboxes, separate from the selection.
• There is a new preference to set the default KDM type.
• $CINEMA_SHORT_NAME can now be used as a variable for use in KDM emails.
• The states of the write to/email checkboxes in the KDM creator are remembered across runs (#2213).

Version 2.16.7

This release has some small new features:

• An improved ratings dialogue box including all the preset ratings from movielabs.com.
• Use checkboxes to decide which screens KDMs will be made for (#1895).
• Display the filename / URL that a screen certificate was obtained from (#1894).
• Don't write a <ContentVersion> tag with an empty <LabelText> as this triggers warnings in some checking tools (#2191).
• Add option to export config as a .zip (#1776).
• Use some decimal places when reporting transcode speed in the log.
• Mark the full debian package as replacing the CLI one (#2179).
• Add --kdm option to dcpomatic2_create.
• Add basic CLI support for exporting projects.
• Add option to use (or not) ISDCF names by default.

Version 2.16.5

This release contains three bug fixes:

• Fix errors when home directory paths contain non-US-English characters on Windows (#2203).
• Fix incorrect automatic routing of sound files to channels in some cases (#2204).
• Remove non-existant option from the dcpomatic2_create help.

Version 2.16.4

New features and major changes

• New “Disk Writer” tool to create DCP drives in EXT2 format from any platform (in beta test).
• Add builds for ARM / Apple Silicon (M1) processors.
• New “Combiner” tool to combine multiple DCPs into one (#1245).
• Various improvements to the stability and speed of the OpenGL renderer.
• Option to ignore video parts of files (#1355 and others).
• Option to set video range (JPEG/MPEG) (#1509).
• Basic handling of overlapping video (#1848).
• Support for CPL metadata and markers.
• Improved DCP verification in the player, and accompanying dcpomatic2_verify command-line tool.
• Compliance with most of the SMPTE DCP Bv2.1 Application Profile.
• New playlist (SPL) editor for the player.
• Basic subtitle export feature.
• Calculate LEQ(m) when analysing audio.
• Add an output audio matrix (#1482).
• Add a new “Add DKDM” dialogue (#1637).
• Support download of certificates from Qube (#1460).
• Allow export with one audio stream per channel.
• Allow specification of audio forensic marking (in KDMs) for some channels only. Default to enabling forensic marking for video and audio (up to and including channel 12) (#1498).
• Checksum network encode requests and replies to protect against network corruption (#1381).
• Allow more complete control over the libdcp/DCP-o-matic metadata written to various places.
• Add Bob Weaver Deinterlacing Filter (bwdif).

Operating system support

From this version onwards, DCP-o-matic no longer supports:

• macOS versions 10.7 (Lion) or earlier.
• Windows XP.

If you need to use one of these operating systems please use the 2.14.59 version of DCP-o-matic.

Workflow improvements

• Re-work scaling following excellent insights by Carsten Kurz, described on #1669. Now the scaling of video content is guessed based on its aspect ratio (taking into account pixel aspect ratio) and there is a "custom" option for overriding incorrectly-marked-up content or content which actually needs its shape to be changed.
• Add a new "Advanced settings" dialog for content, accessible from the right-click menu. Move the "use video" checkbox into here, as it feels like excessive clutter to have it in the main video panel.
• Add subtitle analysis so that the outline of all subtitles in a piece of content can be overlaid onto the preview (#1233).
• Add playhead line to timeline (#1563).
• Add option to set project properties from a DCP loaded as content (#1688).
• Avoid unnecessary re-writes of video assets if they are staying the same (#1638).
• Clicking on the audio graph jumps to that position in the film (#1507).
• Put the timecode next to the rewind-to-0 button to help avoid mouse-slips (#1234).
• Allow > 0dB gain per channel in the audio matrix (#1720).
• Add some new keyboard shortcuts for moving around on the timeline.
• Remove the ISDCF metadata dialogue box (#1929); all metadata is now set in the “Metadata” dialogue.
• Fix the initial folder to something sensible when adding content.
• Remember the path used for "add files" (#2049).

Translations

• Updated cs_CZ translation from Tomáš Begeni.
• Updated de_DE translation from Uwe Dittes.
• Updated es_ES translation from Manuel AC.
• Updated it_IT translation from Riccardo Mantani and Fabrizio Carraro.
• Updated nl_NL translation from Rob van Nieuwkerk.
• Updated sv_SE translation from Mattias Mattsson and Adam Klotblixt.
• Updated zh_CN translation from Kahn Li.
• Updated ru_RU translation from Михаил Эпштейн.
• Updated pl_PL translation from Michał Tomaszewski.

Crash / error fixes

• Fix deadlock when changing CPL in the player (#1827).
• Fix problems with very long filenames on Windows (#1755).
• Stop error messages hiding behind the splash screen on Windows.
• Fix crash with some color attributes in Subrip files.
• Fix crash on dragging timeline content in some cases.
• Potential fix for assertion failures in audio buffers during analysis in some cases (#1568).
• Don't crash if history items are inaccessible.
• Fix crash when exporting a 2D project containing 3D content (#1680).
• Fix hangs when changing CPL in the player (#1905).
• Stop crashing when running the hints check on films with silent/black gaps.
• Potential fix for errors related to info files (#1618).
• Try to ignore exceptions thrown from boost::filesystem::is_symlink (#1662).
• Ignore and report failures to decode frames during playback, rather than crashing (#1593).
• Clarify some error messages on macOS (#1837).
• Fix error when cancelling load of a trusted device certificate.
• Fix error when finding missing content.
• Fix hang on loading a KDM during playback.
• Fix assertion failure in AudioBuffers::copy_from() (#1909).
• Don't crash if the first packet in a stream has AV_NOPTS_VALUE; instead, assume it should be at timestamp 0.
• Fix assertion failures in audio_buffers (#1857).
• Fix download of IMS3000 certificates.
• Fix for -114 errors during 3D encodes (#2173).
• Fix AppImage builds on systems with glib version > 2.68 (#2129).
• Fix trimming of ATMOS MXFs.
• Fix buffer errors when playing back projects containing missing files.
• Fix various problems with job priority in the batch converter.
• Fix errors when referencing trimmed DCPs (#2116).
• Fix errors when trimming or seeking through some files, and when making DCPs (#2035).
• Don't give an error code on a language code of U8 in binary STL files (#2036).

Output correctness fixes

• Create signing certificates whose validity starts a week before DCP-o-matic's installation, so that they are less likely to start too late for a KDM that we make (#1422).
• Fix missing burnt subtitles in some rare cases (#1581).
• Fix incorrect video range on exported files.
• Fix incorrect images when cropping without stretch.
• Fix exported videos with imprecise framerates (e.g. 24.01 rather than 24) in some cases (#1663).
• Fix handling of subtitles at reel boundaries.
• Try to fix no-stretch / no-scale for non-square pixels (#1636).
• Prevent the creation of KDMs with validity periods that lie outside the validity of the signing certificates.
• Hopefully fix incorrect bitmapped subtitle colours.
• Fix reel setup when the last reel is less than 1 second long.
• Use XX as an audio language when there is no specified audio language (#1939).
• Fix incorrect parsing and creation of IDs for PNG subtitles (#1965).
• Fix mis-timed ASS-formatted subtitles embedded in video files, in some cases.
• Fix ordering of closed captions on some devices (e.g. Captiview) (#2106).
• Basic and slightly inaccurate support for in subtitles (#2103).
• Potentially fix intermittently failing audio sync on exports (#2098).
• Don't ignore font settings for DCP subtitles (#2074).
• Don't scale chroma subsampled images to sizes that don't align with the subsampling (#1872).
• Fix SMPTE subtitle XML namespaces (#2061).
• Fix incorrect output DCPs when using a scaled-down DCP as the content (#2086).
• Fix failure to re-make DCPs after changing the "re-encode J2K" setting.
• Fix missing subtitles embedded in files decoded by FFmpeg (#2060).
• Don't write empty <Text> nodes in subtitles/closed captions.
• Allow specifying and writing sign language video language metadata (#2062).
• Fix rendering of HTML entities in subtitles in some cases.
• Fix channel assignment in SMPTE audio MXFs (#2062).
• Fix incorrect timestamps when exporting as reels (#2052).
• Fix incorrect issuer/creator in CPL files.
• Possible fix for various causes of audio/video sync problems in DCPs.

Other fixes

• Fix periods of black between trimmed content in the preview.
• Fix missing subtitles/captions in the player after changing the CPL.
• Use content video frame rate rather than the DCP one when reading trim start/end back from the UI. See #1607.
• DCP-o-matic is usable in macOS ‘dark’ mode.
• DCP-o-matic should no longer create reels shorter than 1 second.
• Sort cinemas / screens better in the KDM dialog (#1904).
• Fix disappearing preview video on changing CPL in some cases (#1641).
• Ignore video streams with frame rates over 1000 (work-around/fix for #1585).
• Flush audio decoder when a DCPDecoder finishes so that resamplers are emptied and hence we don't lose any samples. Fixes #1691.
• Fix timeline selection under scroll.
• Re-fix problems with multiple root node namespaces.
• ISDCF name fixes with > 6 channels and HI/VI (#1633).
• Prevent player folding audio to 2 channel if ‘default DCP audio channels’ is set to 2.
• Keep the computer awake when doing exports and hash computations.
• Fix VF creation with gaps between content.
• Keep default export name even if the user changes the format (#1584).
• Prevent reference/reel setting controls getting stuck when referenced content is moved with reel mode 'single' enabled (#1645).
• Set fade in/out using content frame rate rather than DCP rate (#1642).
• dcpomatic_create now responds to --version on stdout, not stderr (#1686).
• Fix layout bug where the stuff in the content panel would be completely hidden in some cases (seen on Linux only, I think).
• Apply fader-based gain calculations to the current gain, not 0dB.
• Various fixes to the layout when using a GTK3 backend on Linux.
• Various fixes for bugs when using Atmos content.
• Fix vertical alignment with subrip and embedded SSA an codes.
• Content changes should mark the film dirty (#1810).
• Try to improve splitter behaviour when shrinking and then enlarging the main window (#1839).
• Various fixes to the playlist editor.
• Fix failure to update player information when changing CPLs.
• Fix playhead position after trim-up-to (#1847).
• Fix --standard flag to dcpomatic2_cli (github #9).
• Fix transcode finish time estimations when re-encoding a DCP (#1863).
• Fix Christie certificate download when first try fails.
• Fix incorrectly-sized timeline toolbar icons on macOS (#1927).
• Fix confusing audio matrix when using some processors (#1945).
• Be more tolerant of unusual PKL asset types (#1966).
• Fix errors when adding KDMs to VFs before adding the OV.

Minor adjustments

• Adjusting crop while the preview is playing should now be much faster (#1758).
• Complain on startup if signer or decryption chains are inconsistent (#1520).
• Copy with progress updates when we might copy long files (#1574).
• Use a stricter and more helpful dialogue box when specifying languages for subtitles and audio.
• Give a better error when opening a DCP with File -> Open by mistake (#1723).
• Add export button for DKDMs (#1510).
• Better progress reporting during DCP validation (#1812).
• Add support for Datasat AP2x and USL sound processors when converting fader position to gain. Stop storing a chosen processor in config; instead, get the user to choose the processor when calculating gains.
• Use ISDCF name as a default export filename (#1584).
• Add noise to very small J2K frames in an effort to work-around playback failures on DSS-200 (#1902).
• Remove the ‘simple’ UI as it seemed to cause more problems than it solved.
• Trim after _ in current name when enabling ‘Use ISDCF name’ (#1513).
• Hide passwords in text fields.
• Enable multi-threaded decoding with FFmpeg (helps with #1887).
• Make player more tolerant of some DCP errors.
• Try to warn if we're running the 32-bit version on 64-bit windows (WoW64) (#1569).
• Give an error if 2D content is set to 3D (#1565). Also run 3D tests with more parallel jobs to speed them up.
• Hide the upmixers unless an "advanced" configuration option is ticked.
• Allow configuration of relevant log levels in the player (#1549).
• Move credentials settings into certificate download dialogue (#1480).
• Tweak certificate chain dialogue layout (#1530).
• Make the 'why not' messages for VF creation a bit clearer.
• Warn if doing a gain calculation might cause clipping.
• Try to give a better error when we fail to start J2K encoding (probably because of a lack of addressable RAM).
• Put current frame position in seek-by-frame (and current time in seek-by-timecode) dialogues when opening them (#1736).
• Don't offer full-frame containers unless 'allow any container' is enabled.
• Give better error messages when the user makes mistakes with KDMs (#1161).
• Move upload-DCP-to-TMS button to preferences.
• Remove encryption key options (#1760).
• Always sign DCPs (#1760).
• Move video filters controls into advanced content dialogue (#1748).
• Add new macOS preferences icons.
• Move video frame rate override into advanced prefs (#1852).
• Accept serial numbers with A prefix entered by user.
• Confirm removal of cinemas and screens.
• Select newly-added cinemas.
• In a DCP with any subs/CCAPs, make sure every reel has them (#1340).
• Write subtitles and closed captions to a test DCP in the hints thread, then check the result for Bv2.1 violations (part of #1800).
• Add some hints for violations of SMPTE Bv2.1 with subtitles and closed captions.
• Include creator/issuer in default name of exported KDM decryption key (#1888).
• Force .pem extension when saving certificates.
• Add some default filenames to the advanced certificate/key export dialogues (#1888).
• Tell user we need a KDM when we have none, and content is encrypted.
• Add version information to splash screen (#1913).
• Fix confusing error on trying to load a DoM project into the player (#1948).
• Show an explanatory message if the player is not performing very well (#1932).
• Add --twok option to dcpomatic2_create.
• Allow user to add .ttc (TrueType collection) font files.
• Improve config file backup where the user has specified their own config file path.
• Ignore .AppleDouble folders inside DCPs.
• Make CLI-only builds for Debian and Ubuntu.
• Add defaults for facility, studio, chain, distributor (#2075).
• Give markers dialog a close button (#2070).
• Fix flickering black square when selecting content on Windows (#1866).
• Rename ProRes export format to MOV / ProRes (#2067).
• Ignore HMAC discrepencies when reading DCPs.
• Fix non-appearance of encode server icon on macOS in some cases (#2010).

Version 2.16.3

New features and major changes

• New “Disk Writer” tool to create DCP drives in EXT2 format from any platform (in beta test).
• Add builds for ARM / Apple Silicon (M1) processors.
• New “Combiner” tool to combine multiple DCPs into one (#1245).
• Various improvements to the stability and speed of the OpenGL renderer.
• Option to ignore video parts of files (#1355 and others).
• Option to set video range (JPEG/MPEG) (#1509).
• Basic handling of overlapping video (#1848).
• Support for CPL metadata and markers.
• Improved DCP verification in the player, and accompanying dcpomatic2_verify command-line tool.
• Compliance with most of the SMPTE DCP Bv2.1 Application Profile.
• New playlist (SPL) editor for the player.
• Basic subtitle export feature.
• Calculate LEQ(m) when analysing audio.
• Add an output audio matrix (#1482).
• Add a new “Add DKDM” dialogue (#1637).
• Support download of certificates from Qube (#1460).
• Allow export with one audio stream per channel.
• Allow specification of audio forensic marking (in KDMs) for some channels only. Default to enabling forensic marking for video and audio (up to and including channel 12) (#1498).
• Checksum network encode requests and replies to protect against network corruption (#1381).
• Allow more complete control over the libdcp/DCP-o-matic metadata written to various places.
• Add Bob Weaver Deinterlacing Filter (bwdif).

Operating system support

From this version onwards, DCP-o-matic no longer supports:

• macOS versions 10.7 (Lion) or earlier.
• Windows XP.

If you need to use one of these operating systems please use the 2.14.59 version of DCP-o-matic.

Workflow improvements

• Re-work scaling following excellent insights by Carsten Kurz, described on #1669. Now the scaling of video content is guessed based on its aspect ratio (taking into account pixel aspect ratio) and there is a "custom" option for overriding incorrectly-marked-up content or content which actually needs its shape to be changed.
• Add a new "Advanced settings" dialog for content, accessible from the right-click menu. Move the "use video" checkbox into here, as it feels like excessive clutter to have it in the main video panel.
• Add subtitle analysis so that the outline of all subtitles in a piece of content can be overlaid onto the preview (#1233).
• Add playhead line to timeline (#1563).
• Add option to set project properties from a DCP loaded as content (#1688).
• Avoid unnecessary re-writes of video assets if they are staying the same (#1638).
• Clicking on the audio graph jumps to that position in the film (#1507).
• Put the timecode next to the rewind-to-0 button to help avoid mouse-slips (#1234).
• Allow > 0dB gain per channel in the audio matrix (#1720).
• Add some new keyboard shortcuts for moving around on the timeline.
• Remove the ISDCF metadata dialogue box (#1929); all metadata is now set in the “Metadata” dialogue.
• Fix the initial folder to something sensible when adding content.
• Remember the path used for "add files" (#2049).

Translations

• Updated cs_CZ translation from Tomáš Begeni.
• Updated de_DE translation from Uwe Dittes.
• Updated es_ES translation from Manuel AC.
• Updated it_IT translation from Riccardo Mantani and Fabrizio Carraro.
• Updated nl_NL translation from Rob van Nieuwkerk.
• Updated sv_SE translation from Mattias Mattsson and Adam Klotblixt.
• Updated zh_CN translation from Kahn Li.
• Updated ru_RU translation from Михаил Эпштейн.

Crash / error fixes

• Fix deadlock when changing CPL in the player (#1827).
• Fix problems with very long filenames on Windows (#1755).
• Stop error messages hiding behind the splash screen on Windows.
• Fix crash with some color attributes in Subrip files.
• Fix crash on dragging timeline content in some cases.
• Potential fix for assertion failures in audio buffers during analysis in some cases (#1568).
• Don't crash if history items are inaccessible.
• Fix crash when exporting a 2D project containing 3D content (#1680).
• Fix hangs when changing CPL in the player (#1905).
• Stop crashing when running the hints check on films with silent/black gaps.
• Potential fix for errors related to info files (#1618).
• Try to ignore exceptions thrown from boost::filesystem::is_symlink (#1662).
• Ignore and report failures to decode frames during playback, rather than crashing (#1593).
• Clarify some error messages on macOS (#1837).
• Fix error when cancelling load of a trusted device certificate.
• Fix error when finding missing content.
• Fix hang on loading a KDM during playback.
• Fix assertion failure in AudioBuffers::copy_from() (#1909).
• Don't crash if the first packet in a stream has AV_NOPTS_VALUE; instead, assume it should be at timestamp 0.
• Fix assertion failures in audio_buffers (#1857).
• Fix download of IMS3000 certificates.
• Fix for -114 errors during 3D encodes (#2173).
• Fix AppImage builds on systems with glib version > 2.68 (#2129).
• Fix trimming of ATMOS MXFs.
• Fix buffer errors when playing back projects containing missing files.
• Fix various problems with job priority in the batch converter.
• Fix errors when referencing trimmed DCPs (#2116).
• Fix errors when trimming or seeking through some files, and when making DCPs (#2035).
• Don't give an error code on a language code of U8 in binary STL files (#2036).

Output correctness fixes

• Create signing certificates whose validity starts a week before DCP-o-matic's installation, so that they are less likely to start too late for a KDM that we make (#1422).
• Fix missing burnt subtitles in some rare cases (#1581).
• Fix incorrect video range on exported files.
• Fix incorrect images when cropping without stretch.
• Fix exported videos with imprecise framerates (e.g. 24.01 rather than 24) in some cases (#1663).
• Fix handling of subtitles at reel boundaries.
• Try to fix no-stretch / no-scale for non-square pixels (#1636).
• Prevent the creation of KDMs with validity periods that lie outside the validity of the signing certificates.
• Hopefully fix incorrect bitmapped subtitle colours.
• Fix reel setup when the last reel is less than 1 second long.
• Use XX as an audio language when there is no specified audio language (#1939).
• Fix incorrect parsing and creation of IDs for PNG subtitles (#1965).
• Fix mis-timed ASS-formatted subtitles embedded in video files, in some cases.
• Fix ordering of closed captions on some devices (e.g. Captiview) (#2106).
• Basic and slightly inaccurate support for in subtitles (#2103).
• Potentially fix intermittently failing audio sync on exports (#2098).
• Don't ignore font settings for DCP subtitles (#2074).
• Don't scale chroma subsampled images to sizes that don't align with the subsampling (#1872).
• Fix SMPTE subtitle XML namespaces (#2061).
• Fix incorrect output DCPs when using a scaled-down DCP as the content (#2086).
• Fix failure to re-make DCPs after changing the "re-encode J2K" setting.
• Fix missing subtitles embedded in files decoded by FFmpeg (#2060).
• Don't write empty <Text> nodes in subtitles/closed captions.
• Allow specifying and writing sign language video language metadata (#2062).
• Fix rendering of HTML entities in subtitles in some cases.
• Fix channel assignment in SMPTE audio MXFs (#2062).
• Fix incorrect timestamps when exporting as reels (#2052).
• Fix incorrect issuer/creator in CPL files.
• Possible fix for various causes of audio/video sync problems in DCPs.

Other fixes

• Fix periods of black between trimmed content in the preview.
• Fix missing subtitles/captions in the player after changing the CPL.
• Use content video frame rate rather than the DCP one when reading trim start/end back from the UI. See #1607.
• DCP-o-matic is usable in macOS ‘dark’ mode.
• DCP-o-matic should no longer create reels shorter than 1 second.
• Sort cinemas / screens better in the KDM dialog (#1904).
• Fix disappearing preview video on changing CPL in some cases (#1641).
• Ignore video streams with frame rates over 1000 (work-around/fix for #1585).
• Flush audio decoder when a DCPDecoder finishes so that resamplers are emptied and hence we don't lose any samples. Fixes #1691.
• Fix timeline selection under scroll.
• Re-fix problems with multiple root node namespaces.
• ISDCF name fixes with > 6 channels and HI/VI (#1633).
• Prevent player folding audio to 2 channel if ‘default DCP audio channels’ is set to 2.
• Keep the computer awake when doing exports and hash computations.
• Fix VF creation with gaps between content.
• Keep default export name even if the user changes the format (#1584).
• Prevent reference/reel setting controls getting stuck when referenced content is moved with reel mode 'single' enabled (#1645).
• Set fade in/out using content frame rate rather than DCP rate (#1642).
• dcpomatic_create now responds to --version on stdout, not stderr (#1686).
• Fix layout bug where the stuff in the content panel would be completely hidden in some cases (seen on Linux only, I think).
• Apply fader-based gain calculations to the current gain, not 0dB.
• Various fixes to the layout when using a GTK3 backend on Linux.
• Various fixes for bugs when using Atmos content.
• Fix vertical alignment with subrip and embedded SSA an codes.
• Content changes should mark the film dirty (#1810).
• Try to improve splitter behaviour when shrinking and then enlarging the main window (#1839).
• Various fixes to the playlist editor.
• Fix failure to update player information when changing CPLs.
• Fix playhead position after trim-up-to (#1847).
• Fix --standard flag to dcpomatic2_cli (github #9).
• Fix transcode finish time estimations when re-encoding a DCP (#1863).
• Fix Christie certificate download when first try fails.
• Fix incorrectly-sized timeline toolbar icons on macOS (#1927).
• Fix confusing audio matrix when using some processors (#1945).
• Be more tolerant of unusual PKL asset types (#1966).
• Fix errors when adding KDMs to VFs before adding the OV.

Minor adjustments

• Adjusting crop while the preview is playing should now be much faster (#1758).
• Complain on startup if signer or decryption chains are inconsistent (#1520).
• Copy with progress updates when we might copy long files (#1574).
• Use a stricter and more helpful dialogue box when specifying languages for subtitles and audio.
• Give a better error when opening a DCP with File -> Open by mistake (#1723).
• Add export button for DKDMs (#1510).
• Better progress reporting during DCP validation (#1812).
• Add support for Datasat AP2x and USL sound processors when converting fader position to gain. Stop storing a chosen processor in config; instead, get the user to choose the processor when calculating gains.
• Use ISDCF name as a default export filename (#1584).
• Add noise to very small J2K frames in an effort to work-around playback failures on DSS-200 (#1902).
• Remove the ‘simple’ UI as it seemed to cause more problems than it solved.
• Trim after _ in current name when enabling ‘Use ISDCF name’ (#1513).
• Hide passwords in text fields.
• Enable multi-threaded decoding with FFmpeg (helps with #1887).
• Make player more tolerant of some DCP errors.
• Try to warn if we're running the 32-bit version on 64-bit windows (WoW64) (#1569).
• Give an error if 2D content is set to 3D (#1565). Also run 3D tests with more parallel jobs to speed them up.
• Hide the upmixers unless an "advanced" configuration option is ticked.
• Allow configuration of relevant log levels in the player (#1549).
• Move credentials settings into certificate download dialogue (#1480).
• Tweak certificate chain dialogue layout (#1530).
• Make the 'why not' messages for VF creation a bit clearer.
• Warn if doing a gain calculation might cause clipping.
• Try to give a better error when we fail to start J2K encoding (probably because of a lack of addressable RAM).
• Put current frame position in seek-by-frame (and current time in seek-by-timecode) dialogues when opening them (#1736).
• Don't offer full-frame containers unless 'allow any container' is enabled.
• Give better error messages when the user makes mistakes with KDMs (#1161).
• Move upload-DCP-to-TMS button to preferences.
• Remove encryption key options (#1760).
• Always sign DCPs (#1760).
• Move video filters controls into advanced content dialogue (#1748).
• Add new macOS preferences icons.
• Move video frame rate override into advanced prefs (#1852).
• Accept serial numbers with A prefix entered by user.
• Confirm removal of cinemas and screens.
• Select newly-added cinemas.
• In a DCP with any subs/CCAPs, make sure every reel has them (#1340).
• Write subtitles and closed captions to a test DCP in the hints thread, then check the result for Bv2.1 violations (part of #1800).
• Add some hints for violations of SMPTE Bv2.1 with subtitles and closed captions.
• Include creator/issuer in default name of exported KDM decryption key (#1888).
• Force .pem extension when saving certificates.
• Add some default filenames to the advanced certificate/key export dialogues (#1888).
• Tell user we need a KDM when we have none, and content is encrypted.
• Add version information to splash screen (#1913).
• Fix confusing error on trying to load a DoM project into the player (#1948).
• Show an explanatory message if the player is not performing very well (#1932).
• Add --twok option to dcpomatic2_create.
• Allow user to add .ttc (TrueType collection) font files.
• Improve config file backup where the user has specified their own config file path.
• Ignore .AppleDouble folders inside DCPs.
• Make CLI-only builds for Debian and Ubuntu.
• Add defaults for facility, studio, chain, distributor (#2075).
• Give markers dialog a close button (#2070).
• Fix flickering black square when selecting content on Windows (#1866).
• Rename ProRes export format to MOV / ProRes (#2067).
• Ignore HMAC discrepencies when reading DCPs.
• Fix non-appearance of encode server icon on macOS in some cases (#2010).

Version 2.16.1

New features and major changes

• New “Disk Writer” tool to create DCP drives in EXT2 format from any platform (in beta test).
• Add builds for ARM / Apple Silicon (M1) processors.
• New “Combiner” tool to combine multiple DCPs into one (#1245).
• Various improvements to the stability and speed of the OpenGL renderer.
• Option to ignore video parts of files (#1355 and others).
• Option to set video range (JPEG/MPEG) (#1509).
• Basic handling of overlapping video (#1848).
• Support for CPL metadata and markers.
• Improved DCP verification in the player, and accompanying dcpomatic2_verify command-line tool.
• Compliance with most of the SMPTE DCP Bv2.1 Application Profile.
• New playlist (SPL) editor for the player.
• Basic subtitle export feature.
• Calculate LEQ(m) when analysing audio.
• Add an output audio matrix (#1482).
• Add a new “Add DKDM” dialogue (#1637).
• Support download of certificates from Qube (#1460).
• Allow export with one audio stream per channel.
• Allow specification of audio forensic marking (in KDMs) for some channels only. Default to enabling forensic marking for video and audio (up to and including channel 12) (#1498).
• Checksum network encode requests and replies to protect against network corruption (#1381).
• Allow more complete control over the libdcp/DCP-o-matic metadata written to various places.
• Add Bob Weaver Deinterlacing Filter (bwdif).

Operating system support

From this version onwards, DCP-o-matic no longer supports:

• macOS versions 10.7 (Lion) or earlier.
• Windows XP.

If you need to use one of these operating systems please use the 2.14.57 version of DCP-o-matic.

Workflow improvements

• Re-work scaling following excellent insights by Carsten Kurz, described on #1669. Now the scaling of video content is guessed based on its aspect ratio (taking into account pixel aspect ratio) and there is a "custom" option for overriding incorrectly-marked-up content or content which actually needs its shape to be changed.
• Add a new "Advanced settings" dialog for content, accessible from the right-click menu. Move the "use video" checkbox into here, as it feels like excessive clutter to have it in the main video panel.
• Add subtitle analysis so that the outline of all subtitles in a piece of content can be overlaid onto the preview (#1233).
• Add playhead line to timeline (#1563).
• Add option to set project properties from a DCP loaded as content (#1688).
• Avoid unnecessary re-writes of video assets if they are staying the same (#1638).
• Clicking on the audio graph jumps to that position in the film (#1507).
• Put the timecode next to the rewind-to-0 button to help avoid mouse-slips (#1234).
• Allow > 0dB gain per channel in the audio matrix (#1720).
• Add some new keyboard shortcuts for moving around on the timeline.
• Remove the ISDCF metadata dialogue box (#1929); all metadata is now set in the “Metadata” dialogue.
• Fix the initial folder to something sensible when adding content.
• Remember the path used for "add files" (#2049).

Translations

• Updated cs_CZ translation from Tomáš Begeni.
• Updated de_DE translation from Uwe Dittes.
• Updated es_ES translation from Manuel AC.
• Updated it_IT translation from Riccardo Mantani and Fabrizio Carraro.
• Updated nl_NL translation from Rob van Nieuwkerk.
• Updated sv_SE translation from Mattias Mattsson and Adam Klotblixt.
• Updated zh_CN translation from Kahn Li.
• Updated ru_RU translation from Михаил Эпштейн.

Crash / error fixes

• Fix deadlock when changing CPL in the player (#1827).
• Fix problems with very long filenames on Windows (#1755).
• Stop error messages hiding behind the splash screen on Windows.
• Fix crash with some color attributes in Subrip files.
• Fix crash on dragging timeline content in some cases.
• Potential fix for assertion failures in audio buffers during analysis in some cases (#1568).
• Don't crash if history items are inaccessible.
• Fix crash when exporting a 2D project containing 3D content (#1680).
• Fix hangs when changing CPL in the player (#1905).
• Stop crashing when running the hints check on films with silent/black gaps.
• Potential fix for errors related to info files (#1618).
• Try to ignore exceptions thrown from boost::filesystem::is_symlink (#1662).
• Ignore and report failures to decode frames during playback, rather than crashing (#1593).
• Clarify some error messages on macOS (#1837).
• Fix error when cancelling load of a trusted device certificate.
• Fix error when finding missing content.
• Fix hang on loading a KDM during playback.
• Fix assertion failure in AudioBuffers::copy_from() (#1909).
• Don't crash if the first packet in a stream has AV_NOPTS_VALUE; instead, assume it should be at timestamp 0.
• Fix assertion failures in audio_buffers (#1857).
• Fix download of IMS3000 certificates.
• Fix for -114 errors during 3D encodes (#2173).
• Fix AppImage builds on systems with glib version > 2.68 (#2129).
• Fix trimming of ATMOS MXFs.
• Fix buffer errors when playing back projects containing missing files.
• Fix various problems with job priority in the batch converter.
• Fix errors when referencing trimmed DCPs (#2116).
• Fix errors when trimming or seeking through some files, and when making DCPs (#2035).
• Don't give an error code on a language code of U8 in binary STL files (#2036).

Output correctness fixes

• Create signing certificates whose validity starts a week before DCP-o-matic's installation, so that they are less likely to start too late for a KDM that we make (#1422).
• Fix missing burnt subtitles in some rare cases (#1581).
• Fix incorrect video range on exported files.
• Fix incorrect images when cropping without stretch.
• Fix exported videos with imprecise framerates (e.g. 24.01 rather than 24) in some cases (#1663).
• Fix handling of subtitles at reel boundaries.
• Try to fix no-stretch / no-scale for non-square pixels (#1636).
• Prevent the creation of KDMs with validity periods that lie outside the validity of the signing certificates.
• Hopefully fix incorrect bitmapped subtitle colours.
• Fix reel setup when the last reel is less than 1 second long.
• Use XX as an audio language when there is no specified audio language (#1939).
• Fix incorrect parsing and creation of IDs for PNG subtitles (#1965).
• Fix mis-timed ASS-formatted subtitles embedded in video files, in some cases.
• Fix ordering of closed captions on some devices (e.g. Captiview) (#2106).
• Basic and slightly inaccurate support for in subtitles (#2103).
• Potentially fix intermittently failing audio sync on exports (#2098).
• Don't ignore font settings for DCP subtitles (#2074).
• Don't scale chroma subsampled images to sizes that don't align with the subsampling (#1872).
• Fix SMPTE subtitle XML namespaces (#2061).
• Fix incorrect output DCPs when using a scaled-down DCP as the content (#2086).
• Fix failure to re-make DCPs after changing the "re-encode J2K" setting.
• Fix missing subtitles embedded in files decoded by FFmpeg (#2060).
• Don't write empty <Text> nodes in subtitles/closed captions.
• Allow specifying and writing sign language video language metadata (#2062).
• Fix rendering of HTML entities in subtitles in some cases.
• Fix channel assignment in SMPTE audio MXFs (#2062).
• Fix incorrect timestamps when exporting as reels (#2052).
• Fix incorrect issuer/creator in CPL files.
• Possible fix for various causes of audio/video sync problems in DCPs.

Other fixes

• Fix periods of black between trimmed content in the preview.
• Fix missing subtitles/captions in the player after changing the CPL.
• Use content video frame rate rather than the DCP one when reading trim start/end back from the UI. See #1607.
• DCP-o-matic is usable in macOS ‘dark’ mode.
• DCP-o-matic should no longer create reels shorter than 1 second.
• Sort cinemas / screens better in the KDM dialog (#1904).
• Fix disappearing preview video on changing CPL in some cases (#1641).
• Ignore video streams with frame rates over 1000 (work-around/fix for #1585).
• Flush audio decoder when a DCPDecoder finishes so that resamplers are emptied and hence we don't lose any samples. Fixes #1691.
• Fix timeline selection under scroll.
• Re-fix problems with multiple root node namespaces.
• ISDCF name fixes with > 6 channels and HI/VI (#1633).
• Prevent player folding audio to 2 channel if ‘default DCP audio channels’ is set to 2.
• Keep the computer awake when doing exports and hash computations.
• Fix VF creation with gaps between content.
• Keep default export name even if the user changes the format (#1584).
• Prevent reference/reel setting controls getting stuck when referenced content is moved with reel mode 'single' enabled (#1645).
• Set fade in/out using content frame rate rather than DCP rate (#1642).
• dcpomatic_create now responds to --version on stdout, not stderr (#1686).
• Fix layout bug where the stuff in the content panel would be completely hidden in some cases (seen on Linux only, I think).
• Apply fader-based gain calculations to the current gain, not 0dB.
• Various fixes to the layout when using a GTK3 backend on Linux.
• Various fixes for bugs when using Atmos content.
• Fix vertical alignment with subrip and embedded SSA an codes.
• Content changes should mark the film dirty (#1810).
• Try to improve splitter behaviour when shrinking and then enlarging the main window (#1839).
• Various fixes to the playlist editor.
• Fix failure to update player information when changing CPLs.
• Fix playhead position after trim-up-to (#1847).
• Fix --standard flag to dcpomatic2_cli (github #9).
• Fix transcode finish time estimations when re-encoding a DCP (#1863).
• Fix Christie certificate download when first try fails.
• Fix incorrectly-sized timeline toolbar icons on macOS (#1927).
• Fix confusing audio matrix when using some processors (#1945).
• Be more tolerant of unusual PKL asset types (#1966).
• Fix errors when adding KDMs to VFs before adding the OV.

Minor adjustments

• Adjusting crop while the preview is playing should now be much faster (#1758).
• Complain on startup if signer or decryption chains are inconsistent (#1520).
• Copy with progress updates when we might copy long files (#1574).
• Use a stricter and more helpful dialogue box when specifying languages for subtitles and audio.
• Give a better error when opening a DCP with File -> Open by mistake (#1723).
• Add export button for DKDMs (#1510).
• Better progress reporting during DCP validation (#1812).
• Add support for Datasat AP2x and USL sound processors when converting fader position to gain. Stop storing a chosen processor in config; instead, get the user to choose the processor when calculating gains.
• Use ISDCF name as a default export filename (#1584).
• Add noise to very small J2K frames in an effort to work-around playback failures on DSS-200 (#1902).
• Remove the ‘simple’ UI as it seemed to cause more problems than it solved.
• Trim after _ in current name when enabling ‘Use ISDCF name’ (#1513).
• Hide passwords in text fields.
• Enable multi-threaded decoding with FFmpeg (helps with #1887).
• Make player more tolerant of some DCP errors.
• Try to warn if we're running the 32-bit version on 64-bit windows (WoW64) (#1569).
• Give an error if 2D content is set to 3D (#1565). Also run 3D tests with more parallel jobs to speed them up.
• Hide the upmixers unless an "advanced" configuration option is ticked.
• Allow configuration of relevant log levels in the player (#1549).
• Move credentials settings into certificate download dialogue (#1480).
• Tweak certificate chain dialogue layout (#1530).
• Make the 'why not' messages for VF creation a bit clearer.
• Warn if doing a gain calculation might cause clipping.
• Try to give a better error when we fail to start J2K encoding (probably because of a lack of addressable RAM).
• Put current frame position in seek-by-frame (and current time in seek-by-timecode) dialogues when opening them (#1736).
• Don't offer full-frame containers unless 'allow any container' is enabled.
• Give better error messages when the user makes mistakes with KDMs (#1161).
• Move upload-DCP-to-TMS button to preferences.
• Remove encryption key options (#1760).
• Always sign DCPs (#1760).
• Move video filters controls into advanced content dialogue (#1748).
• Add new macOS preferences icons.
• Move video frame rate override into advanced prefs (#1852).
• Accept serial numbers with A prefix entered by user.
• Confirm removal of cinemas and screens.
• Select newly-added cinemas.
• In a DCP with any subs/CCAPs, make sure every reel has them (#1340).
• Write subtitles and closed captions to a test DCP in the hints thread, then check the result for Bv2.1 violations (part of #1800).
• Add some hints for violations of SMPTE Bv2.1 with subtitles and closed captions.
• Include creator/issuer in default name of exported KDM decryption key (#1888).
• Force .pem extension when saving certificates.
• Add some default filenames to the advanced certificate/key export dialogues (#1888).
• Tell user we need a KDM when we have none, and content is encrypted.
• Add version information to splash screen (#1913).
• Fix confusing error on trying to load a DoM project into the player (#1948).
• Show an explanatory message if the player is not performing very well (#1932).
• Add --twok option to dcpomatic2_create.
• Allow user to add .ttc (TrueType collection) font files.
• Improve config file backup where the user has specified their own config file path.
• Ignore .AppleDouble folders inside DCPs.
• Make CLI-only builds for Debian and Ubuntu.
• Add defaults for facility, studio, chain, distributor (#2075).
• Give markers dialog a close button (#2070).
• Fix flickering black square when selecting content on Windows (#1866).
• Rename ProRes export format to MOV / ProRes (#2067).
• Ignore HMAC discrepencies when reading DCPs.
• Fix non-appearance of encode server icon on macOS in some cases (#2010).

Version 2.16.0

New features and major changes

• New “Disk Writer” tool to create DCP drives in EXT2 format from any platform (in beta test).
• Add builds for ARM / Apple Silicon (M1) processors.
• New “Combiner” tool to combine multiple DCPs into one (#1245).
• Various improvements to the stability and speed of the OpenGL renderer.
• Option to ignore video parts of files (#1355 and others).
• Option to set video range (JPEG/MPEG) (#1509).
• Basic handling of overlapping video (#1848).
• Support for CPL metadata and markers.
• Improved DCP verification in the player, and accompanying dcpomatic2_verify command-line tool.
• Compliance with most of the SMPTE DCP Bv2.1 Application Profile.
• New playlist (SPL) editor for the player.
• Basic subtitle export feature.
• Calculate LEQ(m) when analysing audio.
• Add an output audio matrix (#1482).
• Add a new “Add DKDM” dialogue (#1637).
• Support download of certificates from Qube (#1460).
• Allow export with one audio stream per channel.
• Allow specification of audio forensic marking (in KDMs) for some channels only. Default to enabling forensic marking for video and audio (up to and including channel 12) (#1498).
• Checksum network encode requests and replies to protect against network corruption (#1381).
• Allow more complete control over the libdcp/DCP-o-matic metadata written to various places.
• Add Bob Weaver Deinterlacing Filter (bwdif).

Operating system support

From this version onwards, DCP-o-matic no longer supports:

• macOS versions 10.7 (Lion) or earlier.
• Windows XP.

If you need to use one of these operating systems please use the 2.14.57 version of DCP-o-matic.

Workflow improvements

• Re-work scaling following excellent insights by Carsten Kurz, described on #1669. Now the scaling of video content is guessed based on its aspect ratio (taking into account pixel aspect ratio) and there is a "custom" option for overriding incorrectly-marked-up content or content which actually needs its shape to be changed.
• Add a new "Advanced settings" dialog for content, accessible from the right-click menu. Move the "use video" checkbox into here, as it feels like excessive clutter to have it in the main video panel.
• Add subtitle analysis so that the outline of all subtitles in a piece of content can be overlaid onto the preview (#1233).
• Add playhead line to timeline (#1563).
• Add option to set project properties from a DCP loaded as content (#1688).
• Avoid unnecessary re-writes of video assets if they are staying the same (#1638).
• Clicking on the audio graph jumps to that position in the film (#1507).
• Put the timecode next to the rewind-to-0 button to help avoid mouse-slips (#1234).
• Allow > 0dB gain per channel in the audio matrix (#1720).
• Add some new keyboard shortcuts for moving around on the timeline.
• Remove the ISDCF metadata dialogue box (#1929); all metadata is now set in the “Metadata” dialogue.
• Fix the initial folder to something sensible when adding content.
• Remember the path used for "add files" (#2049).

Translations

• Updated cs_CZ translation from Tomáš Begeni.
• Updated de_DE translation from Uwe Dittes.
• Updated es_ES translation from Manuel AC.
• Updated it_IT translation from Riccardo Mantani and Fabrizio Carraro.
• Updated nl_NL translation from Rob van Nieuwkerk.
• Updated sv_SE translation from Mattias Mattsson and Adam Klotblixt.
• Updated zh_CN translation from Kahn Li.

Crash / error fixes

• Fix deadlock when changing CPL in the player (#1827).
• Fix problems with very long filenames on Windows (#1755).
• Stop error messages hiding behind the splash screen on Windows.
• Fix crash with some color attributes in Subrip files.
• Fix crash on dragging timeline content in some cases.
• Potential fix for assertion failures in audio buffers during analysis in some cases (#1568).
• Don't crash if history items are inaccessible.
• Fix crash when exporting a 2D project containing 3D content (#1680).
• Fix hangs when changing CPL in the player (#1905).
• Stop crashing when running the hints check on films with silent/black gaps.
• Potential fix for errors related to info files (#1618).
• Try to ignore exceptions thrown from boost::filesystem::is_symlink (#1662).
• Ignore and report failures to decode frames during playback, rather than crashing (#1593).
• Clarify some error messages on macOS (#1837).
• Fix error when cancelling load of a trusted device certificate.
• Fix error when finding missing content.
• Fix hang on loading a KDM during playback.
• Fix assertion failure in AudioBuffers::copy_from() (#1909).
• Don't crash if the first packet in a stream has AV_NOPTS_VALUE; instead, assume it should be at timestamp 0.
• Fix assertion failures in audio_buffers (#1857).
• Fix download of IMS3000 certificates.
• Fix for -114 errors during 3D encodes (#2173).
• Fix AppImage builds on systems with glib version > 2.68 (#2129).
• Fix trimming of ATMOS MXFs.
• Fix buffer errors when playing back projects containing missing files.
• Fix various problems with job priority in the batch converter.
• Fix errors when referencing trimmed DCPs (#2116).
• Fix errors when trimming or seeking through some files, and when making DCPs (#2035).
• Don't give an error code on a language code of U8 in binary STL files (#2036).

Output correctness fixes

• Create signing certificates whose validity starts a week before DCP-o-matic's installation, so that they are less likely to start too late for a KDM that we make (#1422).
• Fix missing burnt subtitles in some rare cases (#1581).
• Fix incorrect video range on exported files.
• Fix incorrect images when cropping without stretch.
• Fix exported videos with imprecise framerates (e.g. 24.01 rather than 24) in some cases (#1663).
• Fix handling of subtitles at reel boundaries.
• Try to fix no-stretch / no-scale for non-square pixels (#1636).
• Prevent the creation of KDMs with validity periods that lie outside the validity of the signing certificates.
• Hopefully fix incorrect bitmapped subtitle colours.
• Fix reel setup when the last reel is less than 1 second long.
• Use XX as an audio language when there is no specified audio language (#1939).
• Fix incorrect parsing and creation of IDs for PNG subtitles (#1965).
• Fix mis-timed ASS-formatted subtitles embedded in video files, in some cases.
• Fix ordering of closed captions on some devices (e.g. Captiview) (#2106).
• Basic and slightly inaccurate support for in subtitles (#2103).
• Potentially fix intermittently failing audio sync on exports (#2098).
• Don't ignore font settings for DCP subtitles (#2074).
• Don't scale chroma subsampled images to sizes that don't align with the subsampling (#1872).
• Fix SMPTE subtitle XML namespaces (#2061).
• Fix incorrect output DCPs when using a scaled-down DCP as the content (#2086).
• Fix failure to re-make DCPs after changing the "re-encode J2K" setting.
• Fix missing subtitles embedded in files decoded by FFmpeg (#2060).
• Don't write empty <Text> nodes in subtitles/closed captions.
• Allow specifying and writing sign language video language metadata (#2062).
• Fix rendering of HTML entities in subtitles in some cases.
• Fix channel assignment in SMPTE audio MXFs (#2062).
• Fix incorrect timestamps when exporting as reels (#2052).
• Fix incorrect issuer/creator in CPL files.
• Possible fix for various causes of audio/video sync problems in DCPs.

Other fixes

• Fix periods of black between trimmed content in the preview.
• Fix missing subtitles/captions in the player after changing the CPL.
• Use content video frame rate rather than the DCP one when reading trim start/end back from the UI. See #1607.
• DCP-o-matic is usable in macOS ‘dark’ mode.
• DCP-o-matic should no longer create reels shorter than 1 second.
• Sort cinemas / screens better in the KDM dialog (#1904).
• Fix disappearing preview video on changing CPL in some cases (#1641).
• Ignore video streams with frame rates over 1000 (work-around/fix for #1585).
• Flush audio decoder when a DCPDecoder finishes so that resamplers are emptied and hence we don't lose any samples. Fixes #1691.
• Fix timeline selection under scroll.
• Re-fix problems with multiple root node namespaces.
• ISDCF name fixes with > 6 channels and HI/VI (#1633).
• Prevent player folding audio to 2 channel if ‘default DCP audio channels’ is set to 2.
• Keep the computer awake when doing exports and hash computations.
• Fix VF creation with gaps between content.
• Keep default export name even if the user changes the format (#1584).
• Prevent reference/reel setting controls getting stuck when referenced content is moved with reel mode 'single' enabled (#1645).
• Set fade in/out using content frame rate rather than DCP rate (#1642).
• dcpomatic_create now responds to --version on stdout, not stderr (#1686).
• Fix layout bug where the stuff in the content panel would be completely hidden in some cases (seen on Linux only, I think).
• Apply fader-based gain calculations to the current gain, not 0dB.
• Various fixes to the layout when using a GTK3 backend on Linux.
• Various fixes for bugs when using Atmos content.
• Fix vertical alignment with subrip and embedded SSA an codes.
• Content changes should mark the film dirty (#1810).
• Try to improve splitter behaviour when shrinking and then enlarging the main window (#1839).
• Various fixes to the playlist editor.
• Fix failure to update player information when changing CPLs.
• Fix playhead position after trim-up-to (#1847).
• Fix --standard flag to dcpomatic2_cli (github #9).
• Fix transcode finish time estimations when re-encoding a DCP (#1863).
• Fix Christie certificate download when first try fails.
• Fix incorrectly-sized timeline toolbar icons on macOS (#1927).
• Fix confusing audio matrix when using some processors (#1945).
• Be more tolerant of unusual PKL asset types (#1966).
• Fix errors when adding KDMs to VFs before adding the OV.

Minor adjustments

• Adjusting crop while the preview is playing should now be much faster (#1758).
• Complain on startup if signer or decryption chains are inconsistent (#1520).
• Copy with progress updates when we might copy long files (#1574).
• Use a stricter and more helpful dialogue box when specifying languages for subtitles and audio.
• Give a better error when opening a DCP with File -> Open by mistake (#1723).
• Add export button for DKDMs (#1510).
• Better progress reporting during DCP validation (#1812).
• Add support for Datasat AP2x and USL sound processors when converting fader position to gain. Stop storing a chosen processor in config; instead, get the user to choose the processor when calculating gains.
• Use ISDCF name as a default export filename (#1584).
• Add noise to very small J2K frames in an effort to work-around playback failures on DSS-200 (#1902).
• Remove the ‘simple’ UI as it seemed to cause more problems than it solved.
• Trim after _ in current name when enabling ‘Use ISDCF name’ (#1513).
• Hide passwords in text fields.
• Enable multi-threaded decoding with FFmpeg (helps with #1887).
• Make player more tolerant of some DCP errors.
• Try to warn if we're running the 32-bit version on 64-bit windows (WoW64) (#1569).
• Give an error if 2D content is set to 3D (#1565). Also run 3D tests with more parallel jobs to speed them up.
• Hide the upmixers unless an "advanced" configuration option is ticked.
• Allow configuration of relevant log levels in the player (#1549).
• Move credentials settings into certificate download dialogue (#1480).
• Tweak certificate chain dialogue layout (#1530).
• Make the 'why not' messages for VF creation a bit clearer.
• Warn if doing a gain calculation might cause clipping.
• Try to give a better error when we fail to start J2K encoding (probably because of a lack of addressable RAM).
• Put current frame position in seek-by-frame (and current time in seek-by-timecode) dialogues when opening them (#1736).
• Don't offer full-frame containers unless 'allow any container' is enabled.
• Give better error messages when the user makes mistakes with KDMs (#1161).
• Move upload-DCP-to-TMS button to preferences.
• Remove encryption key options (#1760).
• Always sign DCPs (#1760).
• Move video filters controls into advanced content dialogue (#1748).
• Add new macOS preferences icons.
• Move video frame rate override into advanced prefs (#1852).
• Accept serial numbers with A prefix entered by user.
• Confirm removal of cinemas and screens.
• Select newly-added cinemas.
• In a DCP with any subs/CCAPs, make sure every reel has them (#1340).
• Write subtitles and closed captions to a test DCP in the hints thread, then check the result for Bv2.1 violations (part of #1800).
• Add some hints for violations of SMPTE Bv2.1 with subtitles and closed captions.
• Include creator/issuer in default name of exported KDM decryption key (#1888).
• Force .pem extension when saving certificates.
• Add some default filenames to the advanced certificate/key export dialogues (#1888).
• Tell user we need a KDM when we have none, and content is encrypted.
• Add version information to splash screen (#1913).
• Fix confusing error on trying to load a DoM project into the player (#1948).
• Show an explanatory message if the player is not performing very well (#1932).
• Add --twok option to dcpomatic2_create.
• Allow user to add .ttc (TrueType collection) font files.
• Improve config file backup where the user has specified their own config file path.
• Ignore .AppleDouble folders inside DCPs.
• Make CLI-only builds for Debian and Ubuntu.
• Add defaults for facility, studio, chain, distributor (#2075).
• Give markers dialog a close button (#2070).
• Fix flickering black square when selecting content on Windows (#1866).
• Rename ProRes export format to MOV / ProRes (#2067).
• Ignore HMAC discrepencies when reading DCPs.
• Fix non-appearance of encode server icon on macOS in some cases (#2010).