If there is no codec private data for prores it should default to Apple ProRes 422 Standard Definition (apcn). Can be tested with strobe_scientist.mkv from https://developers.google.com/media/vp9/hdr-encoding
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If there is no codec private data for prores it should default to Apple ProRes 422 Standard Definition (apcn). Can be tested with strobe_scientist.mkv from https://developers.google.com/media/vp9/hdr-encoding