We could make a pre-pass on users' options to deduce he explicitly needs the muxer.
gpac -i input.mp4 -o ouput.mp4:frag doesn't instanciate the muxer
This is a GitHub Issue
repo:gpac
owner:gpac
Title : gpac -i input.mp4 -o ouput.mp4:frag doesn't instanciate the muxer
Issue date:

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We could make a pre-pass on users' options to deduce he explicitly needs the muxer.
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