
PROTON_MF overrides (disable)
=================================
PROTON_AUDIO_CONVERT=0
PROTON_AUDIO_CONVERT_BIN=0
PROTON_VIDEO_CONVERT=0
PROTON_DEMUX=0

PROTON_MEDIA_USE_GST override
=================================
Enable with PROTON_MEDIA_USE_GST=1 environment variable

PROTON_GST_VIDEO_ORIENTATION setting
=================================
Set with any of "vertical-flip", "horizontal-flip", "rotate-180" or "automatic"
PROTON_GST_VIDEO_ORIENTATION=automatic
