Audio desync - does not appear within Firefox

[ghost]

I have a webm where the audio starts late compared to the "normal" way (how Firefox plays it, at least). Probably because of the fps.

ffprobe gondola.webm
ffprobe version 2.8.5 Copyright (c) 2007-2016 the FFmpeg developers
  built with gcc 5.3.0 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gnutls --enable-gpl --enable-ladspa --enable-libass --enable-libbluray --enable-libdcadec --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-shared --enable-version3 --enable-x11grab
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, matroska,webm, from 'gondola.webm':
  Metadata:
    encoder         : Lavf56.40.101
  Duration: 00:01:02.69, start: 0.000000, bitrate: 172 kb/s
    Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv), 1280x960, lossless, SAR 1:1 DAR 4:3, 1 fps, 1 tbr, 1k tbn, 1k tbc (default)
    Stream #0:1: Audio: vorbis, 44100 Hz, stereo, flt

Here

[ghost]

I see no desync with default settings, though --video-sync=display-resample fucks up, desyncs a bit, and then disables itself. Is this the problem?

[ghost]

Ah yeah, no audio desync with --no-config. I get

at the beginning, though.

[ghost]

I don't get that anywhere.

[ghost]

I can reproduce it everytime (same actual cut). Using mpv 0.15.0.

[ghost]

It was a more complicated reason, and a regression.

I still don't know why your video output is wrong. Works for me, and I don't know anything about your build/configuration, so I guess that's it.

[ghost]

Okay, thanks for the fix anyway (I guess 1 fps videos can show some things sometimes). Probably a Xorg thingy.

[ghost]

If it's related to the video output, you could try different VOs.