rpi 4 libmpv hardware decoding drops frames
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- Dominant language
- C
- Stars
- 37k
- Forks
- 3.5k
- Avg merge
- 1d 10h
- Merged PRs (30d)
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Description
Important Information
Provide following Information:
- mpv version - master
- Linux Distribution and Version - raspbian
If you're not using git master or the latest release, update.
Releases are listed here: https://github.com/mpv-player/mpv/releases
Reproduction steps
Try to reproduce your issue with --no-config first. If it isn't reproducible
with --no-config try to first find out which option or script causes your issue.
Describe the reproduction steps as precise as possible. It's very likely that
the bug you experience wasn't reproduced by the developer because the workflow
differes from your own.
Expected behavior
When using libmpv, selecting hwdec=mmal-copy should not drop any frames for a 1080p h264 2mbps movie
Actual behavior
Using libmpv, hwdec=mmal-copy drops at least 2 frames a second. Selecting hwdec=no does not drop any frames
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the issue in libmpv on a Raspberry Pi with hwdec=mmal-copy and a 1080p H.264 2 Mbps movie, first using --no-config. Compare frame drops with hwdec=no; done means hardware decoding no longer drops frames in the reported case.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, linux, raspberry-pi
- Domain
- audio-video-rtc, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100