avformat: add a concat protocol that takes a line break delimited list of resources
Suggested-by: ffmpeg@fb.com Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: James Almer <jamrial@gmail.com>
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Suggested-by: ffmpeg@fb.com Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: James Almer <jamrial@gmail.com>