FFMPEG store alpha to separated clip
20. 4. 2021ffmpeg -i interlacedMovieWithAlpha.mov -vf alphaextract,format=yuv420p -flags +ildct+ilme alpha.mp4
Flags are generic way of telling it that it is interlaced…
Simplistic way to check for alpha (RGBA)
mediainfo clipWithAlpha.mov | grep ': RGBA' && echo "has alpha"
