I haven't updated mpv from http://www.deb-multimedia.org since June 2019. Now that I did. There is a big issue. When playing a video for a while(<5mins) using mpv, the whole system froze but the sound still continue playing. I have to restart the computer in order to regain control.
After investigation, I found that in the new version, mpv is using gpu video output whereas in the old version, it is using x11.
So, I tried
mpv -vo=x11 video.avi and it is working fine.
To permanently force mpv to use -vo=x11, I added vo=x11 in ~/.config/mpv/mpv.conf.
Old video outputs(2019-06)
mpv -vo=help Available video outputs: opengl : Extended OpenGL Renderer vdpau : VDPAU with X11 wayland : Wayland SHM video output xv : X11/Xv sdl : SDL 2.0 Renderer vaapi : VA API with X11 x11 : X11 (slow, old crap) null : Null video output image : Write video frames to image files tct : true-color terminals caca : libcaca drm : Direct Rendering Manager
New video outputs(2020-02)
mpv -vo=help Available video outputs: libmpv render API for libmpv gpu Shader-based GPU Renderer vdpau VDPAU with X11 xv X11/Xv sdl SDL 2.0 Renderer vaapi VA API with X11 x11 X11 (slow, old crap) null Null video output image Write video frames to image files tct true-color terminals caca libcaca drm Direct Rendering Manager