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IDProjectCategoryView StatusLast Update
0002537DCP-o-maticBugspublic2023-06-03 15:01
Reporteroverlookmotel Assigned Tocarl  
Status resolvedResolutionfixed 
PlatformMacOSOS XOS Version10.14
Product Version2.16.50 
Target Version2.16.57 
Summary0002537: MainMarkers in Interop DCP

Have just made an Interop DCP with DOM 2.16.55 (not tested in 2.16.56 yet, but don't see anything related in changelog) on Mac OS 10.14.6.

The CPL comes out with MainMarkers:

First reel: FFOC with offset 1
Last reel: LFOC with offset equal to number of frames in last reel - 1

It strikes me these aren't very useful markers, as they don't convey any information beyond "it starts at the start, and ends at the end"!

The odd thing is that when outputting Interop, the "Markers" button is greyed out, so there's no way to set useful markers e.g. for start of end credits. But there's also no way to disable the FFOC/LFOC markers.

Something similar was discussed before ( but it's unclear to me from that discussion what the upshot was.

Are markers meant to be included in Interop DCPs? If so:

  1. Is there any incompatibility risk associated with this?
  2. Should it be possible to set other markers at chosen offsets as in SMPTE?
  3. Would it be possible to add an option to disable the default markers if you don't want them?
TagsNo tags attached.
Estimated weeks required
Estimated work requiredUndecided



2023-05-28 18:44

administrator   ~0005698

I think we probably just shouldn't write them to interop. The FFOC/LFOC thing is the same in SMPTE, and Bv2.1 defines what values they have (1 and length-1) which is odd, to put it politely!


2023-05-29 21:48

administrator   ~0005704

Interop markers removed in 86b88c37c34de9cd0c51e0825d28b6258e2451d2 for 2.16.57.


2023-06-03 15:01

developer   ~0005728

Confirmed fixed.

Bug History

Date Modified Username Field Change
2023-05-26 18:47 overlookmotel New Bug
2023-05-28 18:44 carl Note Added: 0005698
2023-05-28 19:59 carl Branch => 2537-markers
2023-05-28 19:59 carl Estimated work required => Undecided
2023-05-28 19:59 carl Assigned To => carl
2023-05-28 19:59 carl Status new => confirmed
2023-05-28 19:59 carl Target Version => 2.16.57
2023-05-29 21:48 carl Status confirmed => resolved
2023-05-29 21:48 carl Resolution open => fixed
2023-05-29 21:48 carl Note Added: 0005704
2023-06-03 15:01 overlookmotel Note Added: 0005728