mpv Information
mpv v0.41.0-390-g4f9f1ffaf Copyright © 2000-2026 mpv/MPlayer/mplayer2 projects
built on Mar 29 2026 14:42:33
libplacebo version: v7.362.0 (v7.360.0-11-g33b5dfada6a8)
FFmpeg version: N-123518-gc49f6bec20cc
FFmpeg library versions:
libavcodec 62.29.100
libavdevice 62.4.100
libavfilter 11.15.101
libavformat 62.13.101
libavutil 60.29.100
libswresample 6.4.100
libswscale 9.7.100
Other Information
- Linux version: TW
- Kernel Version: 7.0.0-rc5
- GPU Model: 6600 XT
- Mesa/GPU Driver Version: Mesa 26.1.0-devel (git-93d7f01578)
- Window Manager and Version: sway version 1.13-dev-876bd7f653f5
- Source of mpv: Self built
- Latest known working version: Never worked
- Issue started after the following happened: N/A
Reproduction Steps
mp.add_key_binding("s", "crackle", function()
for i = 1, 1000 do
mp.command_native_async({
name = "subprocess",
args = { "true" }
}, function() end)
end
end)Run mpv with this script and press s to run "true" command which does nothing one thousand times.
For ease of debugging, this command is sufficient to reproduce the problem:
sh -c 't=$(mktemp --suffix=.lua) || exit; echo "mp.add_key_binding(\"s\",\"crackle\",function() for i=1,1000 do mp.command_native_async({name=\"subprocess\",args={\"true\"}},function() end) end end)" > "$t"; mpv --no-config "av://lavfi:testsrc" --audio-file="av://lavfi:anoisesrc=color=pink:amplitude=0.02" --scripts="$t"; rm "$t"'Press s after mpv opens.
I've only opened this issue for Linux as that's the only platform I use, but it might be an issue on other platforms too. I looked into this issue because of the thumbnailer script that was added in #17518 at some point, and had audio crackling issues when moving the cursor across the seekbar. The reproducer script runs 1000 commands to make the issue obvious.
Expected Behavior
Running subprocess command with command_native_async doesn't block mpv.
Actual Behavior
Running subprocess command with command_native_async blocks mpv.
Log File
mpvsucks.log
Sample Files
No response
I carefully read all instruction and confirm that I did the following:
mpv Information
Other Information
Reproduction Steps
Run mpv with this script and press s to run "true" command which does nothing one thousand times.
For ease of debugging, this command is sufficient to reproduce the problem:
sh -c 't=$(mktemp --suffix=.lua) || exit; echo "mp.add_key_binding(\"s\",\"crackle\",function() for i=1,1000 do mp.command_native_async({name=\"subprocess\",args={\"true\"}},function() end) end end)" > "$t"; mpv --no-config "av://lavfi:testsrc" --audio-file="av://lavfi:anoisesrc=color=pink:amplitude=0.02" --scripts="$t"; rm "$t"'Press
safter mpv opens.I've only opened this issue for Linux as that's the only platform I use, but it might be an issue on other platforms too. I looked into this issue because of the thumbnailer script that was added in #17518 at some point, and had audio crackling issues when moving the cursor across the seekbar. The reproducer script runs 1000 commands to make the issue obvious.
Expected Behavior
Running subprocess command with command_native_async doesn't block mpv.
Actual Behavior
Running subprocess command with command_native_async blocks mpv.
Log File
mpvsucks.log
Sample Files
No response
I carefully read all instruction and confirm that I did the following:
--log-file=output.txt.