Port of some libretro shaders for use with mpv. Useful for watching Tool Assisted Speedruns at native resolution from https://tasvideos.org/.

Some of the shaders have been automatically generated using mpv-libretro.

1. Clone this repository inside mpv's config folder:

   mkdir -p ~/.config/mpv/shaders
   git clone https://git.sr.ht/~taiite/mpv-retro-shaders ~/.config/mpv/shaders/mpv-retro-shaders
   

2. Add this snippet at the top of your mpv.conf configuration file:

   include=~~/shaders/mpv-retro-shaders/all.conf
   

3. Start mpv with a shader profile, e.g. crt-lottes:

   mpv --profile=crt-lottes my_video.mp4
   

To use these shaders with upscaled videos, you need to downscale the video with a filter like so:

mpv --vf=format=convert=yes:fmt=yuv444p,lavfi=[scale=$WIDTH:$HEIGHT:flags=neighbor,setsar=1:1] \
    --profile=crt-guest-advanced-ntsc \
    My_upscaled_video.mp4

Change $WIDTH:$HEIGHT to the actual resolution of the game (e.g. 342:224, or 256:224).

See the following for more details on video filters:

• mpv --vf=format=help
• mpv --vf=format=fmt=help
• mpv --vf=lavfi=help
• https://mpv.io/manual/stable/#video-filters
• https://ffmpeg.org/ffmpeg-filters.html#scale-1

• CRT guest advanced shader (--profile=crt-guest-advanced-ntsc) emulates CRT looks. See crtgan for info on parameters. does not work with --vo=gpu-next

• Lottes' CRT shader (--profile=crt-lottes) emulates several CRT looks. Change the SHADOW_MASK parameter (0-4) to switch CRT types. Change the CURVATURE parameter to set the curvature of the screen.

• CRT royale (--profile=crt-royale-fb-intel), fake bloom, intel preset. requires --vo=gpu-next

• Gameboy Advance color shader (--profile=gba) make the colors look as if on a GBA screen.

Each shader is distributed under a different license. See their source for details.