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Final Cut Pro
0001 Jun 1
One minute read

Final Cut Pro

Alpha Channel, Transparency

Use prores 4444 codec to export or render files.

Convert to webm with alpha

ffmpeg -i video_in.mov -c:v libvpx -quality good -b:v 1M -qmin 10 -qmax 42 -maxrate 1M -cpu-used 0 -bufsize 2M -threads 4 -c:a vorbis -b:a 128k -strict -2 video_out.webm

Use cross desolve transition with chroma key filter.

Add transitions to your project

Problem is that Keyed green screen appears during Cross Dissolve transition. You must use chroma key first to render files with alpha channel, only after that use transitions.

Using transition between clips inside compound clip don’t work if clips have chroma key filter enabled.


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