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IDProjectCategoryView StatusLast Update
0002068DCP-o-maticDocumentationpublic2021-08-12 21:36
Reportertomashnyk@gmail.com Assigned To 
PrioritynormalSeveritytextReproducibilityalways
Status newResolutionopen 
Platform64 bitOSLinuxOS VersionUbuntu
Product Version2.14.37 
Summary0002068: Explain better export options
Description

The page about exporting: https://dcpomatic.com/manual/html/ch09.html# is short, I propose to replace this paragrapgh as follows:

"From this dialogue you can select the required output format, output file and, in the case of MP4, the quality of the output file by setting the CRF value*. The time needed to export and the resulting size depends among others on the resolution of the DCP (to change it, see here**) and on the CRF value. Reasonable CRF values CRF start at 17, but the resulting file size can be almost equal to the input itself. For non-distribution purposes, 28 or even lower can be a much saner choice that still offer good image quality."

*"CRF Value" should point to https://trac.ffmpeg.org/wiki/Encode/H.264#crf
** "here" should point to https://dcpomatic.com/manual/html/ch07.html

Steps To Reproduce

What I am still not sure about is what happens when I create a DCP from a source that is not that good, whether the exports at CRF 17 will be still as large. A discussion of the export dialog settings is here: https://dcpomatic.com/forum/viewtopic.php?f=2&t=1682

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child of 0001896 acknowledgedcarl Update manual 

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Bug History

Date Modified Username Field Change
2021-08-12 13:23 tomashnyk@gmail.com New Bug
2021-08-12 21:36 carl Relationship added child of 0001896