The video sequencer does not correctly decode an AVI file #101981
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Reference: blender/blender#101981
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 522.30
Blender Version
Broken: version: 3.4.0 Alpha, branch: master, commit date: 2022-10-14 22:00, hash:
bc06fcca47
Worked: (newest version of Blender that worked as expected)
Short description of error
Input File:
2022-10-21 15-07-36.avi
Output file:
0001-0110.mp4
Exact steps for others to reproduce the error
video_sec_buf.blend
Added subscriber: @pseudoua
Added subscriber: @OmarEmaraDev
Changed status from 'Needs Triage' to: 'Needs User Info'
Can you clarify what the issue with the output file is? Is it the quality, the speed or something else?
Input file - OBSStudio screen capture.
Output file (with preview) - how it is played and saved in Blender (part of the video is simply missing, the picture twitches).
In VLC, the original file opens fine.
And here is how it is clamped with the help of HandBrake...
2022-10-21 15-07-36.m4v
I noticed the problem a long time ago .. it interfered with cutting for instagram. Now I have drawn up a bunch of problems and decided to voice this one too.
Those. Because of such glitches, I had to use third-party editors. I want to be a patriot)
!!!
Perhaps the main nuance is that immediately upon opening it can be played correctly, but you just need to change something (cutting or shifting the beginning and end of playback) - jerks and skips start right in the player window!
Changed status from 'Needs User Info' to: 'Confirmed'
I can confirm bad decoding of the attached file. I can see some errors from FFMPEG, but I am not sure what the issue is or what it really means.
The video sequencer does not correctly play and save the output fileto The video sequencer does not correctly decode an AVI fileAdded subscriber: @iss
I see that this report is filed with version older than
bcc56253e2
, but even more curious is, that I see proxy being used causing trouble./home/omar/Desktop/BL_proxy/2022-10-21 15-07-36.avi/proxy_100.avi
in log from @OmarSquircleArt.@pseudoua please check if this happens when you disable proxies for strip. If you can run Blender from console with
--debug-ffmpeg
argument and upload log, that would be best.I have checked seeking to each frame of original video and never got
DECODE UNHAPPY
message (meaning that requested frame was not found in stream). Will check proxies though.After further investigation, I was not able to reproduce issue when proxies are used, so i would appreciate steps to reproduce that issue.
But I have found issue that looks like provided video if proxies are built, but not used. This is because timecodes are used even if proxies are disabled, but generated timecode seems to be invalid in the first place. So I think it would be best to not use timecodes if "Proxy & Timecode" checkbox is not checked. Broken timecode I will have to investigate.
Changed status from 'Confirmed' to: 'Needs User Info'
The errors I get in my log are reproducible just by opening the file and changing the source path of the video to the attached video.
The issue that the first frame persists seems to happen regardless if proxy is used or not.
log_sec.txt
2022-10-24 19-36-35.m4v
Sorry the picture is cropped (OBS trubled)
But the essence is visible!
This comment was removed by @pseudoua
2022-10-24 20-04-44.m4v
Thanks, now I see error
FETCH: error while seeking to DTS = -3 (frameno = 0, PTS = 0): errcode = -1
, which could be introduced bybcc56253e2
. That should be easy fix. Seems like same issue as actually reported.For issue with timecodes I am not quite sure, 2.83 seems to work, but timecode usage may have been hardcoded back then. Technically timecodes should be EOL and removed soon if all goes as planned so not sure if I will be able to fix.
@pseudoua Thanks for logs and video. I wasn't able to follow the video (written steps are always preferred), but I was able to reproduce symptoms at least. Rest is clear from logs.
This issue was referenced by
47868c8a4f
This issue was referenced by
a67876103a
Changed status from 'Needs User Info' to: 'Resolved'