JELLYBRIDGE_HWDEC- mpv's hardware decoding mode. The default is
auto-safe;noturns hardware decoding off,autoallows modes the default leaves out. JELLYBRIDGE_MPV_OPTIONS- Any further mpv options, as
name=value,name=value. They are applied last, so they override JellyBridge's own.
Example: JELLYBRIDGE_HWDEC=no jellybridge
On Windows, set the variable in PowerShell before starting the app: $env:JELLYBRIDGE_HWDEC="no"; jellybridge.exe.