Setting Output Quality to Lossless when exporting FFmpeg video only exports black frames #80791
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Reference: blender/blender#80791
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System Information
Operating system: Windows 10
Graphics card: RTX 2080 Ti
Blender Version
Broken: 2.90.0
Worked: Does not work in 2.83 either based on the versions I tried.
Short description of error
When exporting FFmpeg video with video codec H.264, output set to 'Lossless', it exports a file with only black frames. MPEG-4 and Quicktime both have the same result. Only tested those two containers, and only 'output quality lossless' seemed to create the issue. Every other output quality appears fine. Cycles and Eevee both appear to have this issue.
Exact steps for others to reproduce the error
File attached, bugreport.blend, but it's just a variation of normal startup file.
Added subscriber: @Gehrig
Added subscriber: @Alaska
Changed status from 'Needs Triage' to: 'Needs User Info'
I believe this is a issue with the Windows video player. Opening the exported video in a web browser like
Google Chrome
or opening the video in Blender shows that it does have frames. I've personally had this issue with Nvidia lossless video recording withOpen Broadcasting Studio
OBS, so I believe it's a Windows video player issue with lossless video, not a issue with Blender.Are you able to confirm this?
Ah, crap, Alaska yes you appear to be right. Opening in Blender VSE works fine, I think you're right it's just a windows video player issue. So sorry about that! Should I just delete the task? Or is it good to leave it in case someone googles the same issue? Thanks!
Changed status from 'Needs User Info' to: 'Resolved'
I've closed the task for you. It will remain on this website so if someone goes looking for it they will be able to find it.