FFV1 Container / Container information for codecs
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Description
What container does FFV1 use? I can't find where this is at in documentation. It mentions the codecs but not corresponding containers when you are using extensions.
I've tried mkv, avi, mp4, etc for FFV1 but I always get
OpenCV: FFMPEG: tag 0x31766666/'ffv1' is not supported with codec id 33 and format '[container]'
OpenCV: FFMPEG: fallback to use tag 0x31564646/'FFV1'
such as for mkv which everything tells me FFV1 often uses
OpenCV: FFMPEG: tag 0x31766666/'ffv1' is not supported with codec id 33 and format 'matroska / Matroska'
OpenCV: FFMPEG: fallback to use tag 0x31564646/'FFV1'
The resulting MKV file is openable with a video player, and does look lossless, but the file is also not proper, thus no thumbnail or recognized information in properties.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
No file or test is named. Start by reviewing the existing codec documentation and the FFV1/OpenCV-FFmpeg output quoted in the issue; determine which container and extension guidance is missing, then document the supported information clearly and verify it against the reported MKV behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- opencv, python
- Domain
- audio-video-rtc, documentation
- Issue type
- Documentation
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100