hdr-compute-peak changes the brightness unaturally with subtitle.
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- Dominant language
- C
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Description
mpv version and platform
mpv 0.29.1 Copyright © 2000-2018 mpv/MPlayer/mplayer2 projects
built on UNKNOWN
ffmpeg library versions:
libavutil 56.23.101
libavcodec 58.39.100
libavformat 58.22.100
libswscale 5.4.100
libavfilter 7.44.100
libswresample 3.4.100
ffmpeg version: 4.1.git
Reproduction steps
Play HDR movie.
Expected behavior
hdr-compute-peak doesn't change the brightness when the subtitle comes out.
Actual behavior
When the subtitle comes out, the image becomes so dim, the video is not watchable.
Log file
Sample files
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 with the reproduction steps for an HDR movie and inspect the linked log file alongside the hdr-compute-peak behavior when subtitles appear. Trace the HDR brightness calculation and subtitle interaction; done means subtitles no longer make the image unwatchably dim while hdr-compute-peak is enabled.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- audio-video-rtc
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100