2

One should use the avformat library flag to stop muxing with the shortest stream. ffmpeg -i file.mp4 -map 0 -c copy -fflags +shortest -max_interleave_delta 1G -movflags +faststart out.mp4


1

Hi This article might help as well, sending direct from FCPX to Handbrake FCPX to Handbrake


1

This article should help custom resolution and frame rate in FCPX


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