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IDProjectCategoryView StatusLast Update
0001390DCP-o-matic[All Projects] Bugspublic2018-11-07 01:05
ReporteroverlookmotelAssigned Tocarl 
Status feedbackResolutionopen 
PlatformMacOSOS XOS Version10.12
Product Version2.12.0 
Target VersionFixed in Version 
Summary0001390: DCP-o-matic cannot handle some flavours of DNxHD

A couple of DNxHD MXF files I've encountered come out very strange when encoded to DCP in DCP-o-matic 2.12.10.

The image appears blocky in a way that is not apparent when viewing the file in VLC or Adobe Premiere Pro.

ffprobe identifies the profile on both the offending files as "DNXHR HQX" - I guess a specific flavour of DNxHD.

This effect is seen both in the preview in DCP-o-matic and in the resulting DCP that DCP-o-matic makes.

ffmpeg is able to convert the file to e.g. ProResHQ without the artefacts appearing. So workaround is to convert file to ProResHQ with ffmpeg and make DCP from that file. That works fine.

Carl, I'll email you one of the files.

TagsNo tags attached.
Estimated work requiredUnknown



2018-11-07 01:05

administrator   ~0002755

Hi Jim, the file looks OK in 2.13.x so I think it's probably been fixed in FFmpeg. We could look at a backport to 2.12.x if it is important to you.

Bug History

Date Modified Username Field Change
2018-10-23 08:30 overlookmotel New Bug
2018-11-07 01:05 carl Assigned To => carl
2018-11-07 01:05 carl Status new => feedback
2018-11-07 01:05 carl Note Added: 0002755