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FFmpeg video codec 1 playback issues

Posted: 12 May 2019 13:38
by SubjectDelta
I hope this is the right place to report this bug. If not, please let me know and I'll move it to the correct location.

As the title says: I have a playback issue with VLC version 3.0.6 and VC1 codecs created with FFmpeg.
Both examples were created with blender 2.79.
Settings:
  • FFmepg video codec #1
  • very slow; smallest file
  • Encoded as RGBA
  • keyframe interval: 15 frames
  • Audio codec: None
Example images:
1)
Image

2)
Image

This is what the video actually should look like:
https://streamable.com/ljd4m

[s]Upload from http://streams.videolan.org/upload/ will follow in a moment[/s]
Edit: It seems that I can't share the link to the file I uploaded over there. Is there any site where I should upload the file (eg. uploaded.net)

BTW: I would be very thankful if you can tell me how to create spoilers in here so that the original sized images don't use 90% of the screen space.

Re: FFmpeg video codec 1 playback issues

Posted: 16 May 2019 22:54
by SubjectDelta
Was this the right place to post such a bug report or not. I highly doubt that it is since there was not a single comment. I highly doubt that even a single person really read the whole thread!

Re: FFmpeg video codec 1 playback issues

Posted: 24 May 2019 22:20
by SubjectDelta
Are there any comments on here?
Like is this forum dead or is this just the wrong place to submit such things?

Re: FFmpeg video codec 1 playback issues

Posted: 25 May 2019 08:39
by Lotesdelere
Open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also please upload a short sample of a problematic file to Zippyshare.com (200 MB max) or to WeTransfer.com and then post the link to the file here.
http://www.zippyshare.com
https://wetransfer.com

If needed cut it with DGsplit and read here about how to do it:
http://forum.videolan.org/viewtopic.php?f=14&t=57724&p=193335#p193335
100 MB max should be enough.

Re: FFmpeg video codec 1 playback issues

Posted: 26 May 2019 18:37
by SubjectDelta
Open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also please upload a short sample of a problematic file to Zippyshare.com (200 MB max) or to WeTransfer.com and then post the link to the file here.
http://www.zippyshare.com
https://wetransfer.com

If needed cut it with DGsplit and read here about how to do it:
http://forum.videolan.org/viewtopic.php?f=14&t=57724&p=193335#p193335
100 MB max should be enough.

Log:
https://pastebin.com/qGHCdCSh

Video file:
The file is only 4 seconds long and has less than 250KB.
Link to the file: https://www90.zippyshare.com/v/D2CzvrIL/file.html

Re: FFmpeg video codec 1 playback issues

Posted: 27 May 2019 07:30
by Lotesdelere
I can't reproduce the issue, your sample is playing fine for me with either D3D11 or D3D9.

Re: FFmpeg video codec 1 playback issues

Posted: 27 May 2019 19:28
by tranle
you can try to change under preferences->video->input/codecs->video codecs->ffmpeg->threads:
change from 0 to something less than the number of processor/threads that you have.

Re: FFmpeg video codec 1 playback issues

Posted: 27 May 2019 21:53
by SubjectDelta
you can try to change under preferences->video->input/codecs->video codecs->ffmpeg->threads:
change from 0 to something less than the number of processor/threads that you have.
I have a 6 core CPU (no Hyper Threading) and set the thread count to 4.

I still get the same result

Re: FFmpeg video codec 1 playback issues

Posted: 28 May 2019 09:40
by Lotesdelere
I have a 6 core CPU (no Hyper Threading) and set the thread count to 4.

Is it any better if you set it to 1 ?

Re: FFmpeg video codec 1 playback issues

Posted: 28 May 2019 17:10
by SubjectDelta
I have a 6 core CPU (no Hyper Threading) and set the thread count to 4.

Is it any better if you set it to 1 ?
Better, well... I would say different.

When set to 0, 3, 4, 5 or 6 I get the results you see in the two images.
When the threads are set to 1 or 2 I don't have the distortions. However, the playback stops after a second or so. I the frame/seconds counter seems to still run while the image seems to be frozen.