all: multiple simultaneous playback

[chapmanjacobd]

Is your feature request related to a problem? Please describe. It might be interesting to experiment with multiple-playback: playing back multiple videos at the same time with different grids

Describe the solution you'd like Something like -m 3 would open three files at the same time and,

• if the number matches the number of screens, play fullscreen on each
• if there are fewer or more screens then it would grid by splitting up the screen into equal parts

Describe alternatives you've considered

• https://github.com/vzhd1701/gridplayer
• https://github.com/occivink/mpv-gallery-view
• ?

Additional considerations

1. --loop for passing loop to mpv
2. If one of the videos is closed then another takes its place.
3. How to handle post-actions?

[chapmanjacobd]

closed with 1.16.024