mpv-player
In LAN mode, some MP4 playback is very choppy.
mpv Information
mpv v0.40.0-dev-g2e5e2938d Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
built on Nov 10 2025 08:05:24
libplacebo version: v7.357.0
FFmpeg version: bebbdca
FFmpeg library versions:
libavcodec 61.19.101
libavdevice 61.3.100
libavfilter 10.4.100
libavformat 61.7.100
libavutil 59.39.100
libswresample 5.3.100
libswscale 8.3.100
Other Information
- Windows version: 11
- GPU model, driver and version: navida 2060 super
- Source of mpv: mpv-x86_64-pc-windows-msvc in nightly.link
- Latest known working version: no
- Issue started after the following happened: always
Reproduction Steps
Put the mp4 in my nas with http server, and play the url with mpv.
Expected Behavior
The playback should not choppy.
Actual Behavior
The playback is very choppy.
And the total cache time is always less than 1s.
If I remux the mp4 to mkv (use Mkvtoolnix), then the issue is gone.
Log File
Sample Files
https://drive.google.com/file/d/1diN94Wx7kbbELmwKbAC6xWT678vqRzIy/view?usp=drive_link
I carefully read all instruction and confirm that I did the following:
- [x] I tested with the latest mpv version to validate that the issue is not already fixed.
- [x] I provided all required information including system and mpv version.
- [x] I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of
--log-file=output.txt. - [x] I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
- [x] I attached the full, untruncated log file.
- [x] I attached the backtrace in the case of a crash.
This is the original file:
.\mpv.exe --cache=yes --cache-secs=10 http://192.168.0.254/files/es-4K.mp4
This is the remux file:
.\mpv.exe --cache=yes --cache-secs=10 http://192.168.0.254/files/es-4K.mkv
You can see the difference about Total Cache between these two file. But both file seems have much drop frames.
And both test on same device and network.
That's a high resolution and you're not using hardware decoding. Try adding hwdec=auto
.\mpv.exe --hwdec=auto --cache=yes --cache-secs=10 http://192.168.0.254/files/es-4K.mp4
Still the same issue.
I just streamed a little of it from your G Drive. My stats for the video differ from yours. Mine says the video 30fps but yours says 60fps. Mine is being downscaled.
No dropped frames.
mpv --no-config --hwdec=auto --cache=yes --cache-secs=2 https://drive.google.com/file/d/1diN94Wx7kbbELmwKbAC6xWT678vqRzIy/view
No dropped frames.
Your test is kind of useless, it's streaming at half the framerate, less than half the resolution and >20x less bandwidth. The video file doesn't get it's quality murdered when downloading it first.
I was able to reproduce the issue with or without hwdec on a 5700X and 6700XT, it's able to play fine in other players (Firefox/Edge/MPC-HC)
EDIT: I can reproduce without --cache but not when using cache=yes and a default profile and I could reproduce on my profile which was using cache=yes and demuxer-hysteresis-secs (can no longer reproduce with hysteresis commented out).
This happened on android platform too, I use mpv-android, also have this issue. But other player (Mxplayer, Exoplayer) do not have this issue.
Ya, that's why I showed the chrome stats. I realized it was being modified. I wasn't able to download the file.
Ya, that's why I showed the chrome stats. I realized it was being modified. I wasn't able to download the file.
If I need to modify the share file access for others to download?