Cache dumping started.
[ffmpeg] mp4: Tag [15][0][0][0] incompatible with output codec id '86018' (mp4a)
[recorder] Writing header failed.
Cache dumping stopped due to error.
This issue was fixed in mpv a few months ago; upgrading to the latest mpv (either git or v0.34.0) should fix it. Alternatively you can try one of the workarounds documented here if you wish to keep using an older version of mpv.
mpv https://www.2ix2.com/rtl-live/ (+) Video --vid=1 (h264 1024x576 25.000fps) (+) Audio --aid=1 (aac 2ch 48000Hz) AO: [pulse] 48000Hz stereo 2ch float VO: [gpu] 1024x576 yuv420p
ctrl-z:
Cache dumping started. [ffmpeg] mp4: Tag [15][0][0][0] incompatible with output codec id '86018' (mp4a) [recorder] Writing header failed. Cache dumping stopped due to error.
mpv 0.33.0 Copyright © 2000-2020 mpv/MPlayer/mplayer2 projects built on Thu Nov 26 06:59:44 UTC 2020 FFmpeg library versions: libavutil 56.60.100 libavcodec 58.112.103 libavformat 58.64.100 libswscale 5.8.100 libavfilter 7.90.100 libswresample 3.8.100 FFmpeg version: git-2020-11-22-9208b72