Changes between Version 2 and Version 3 of Ticket #9132, comment 19


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Timestamp:
Aug 23, 2021, 1:25:50 AM (5 years ago)
Author:
Balling

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  • Ticket #9132, comment 19

    v2 v3  
    55Why you do not want to reset all https://github.com/jeeb/ffmpeg/commit/09abc1ea76d87d73ad2ec4a331139baeb618f8fb#diff-dc711ef6bb905f1c3a99a4552c12f72c2020e1fc6240ed5f3d9d5867081d4ca4R743?
    66
    7 In particular it is very important that chroma siting (which is different for JPEG, avc and HDR in HEVC) will be correctly set in VUI in avc/hevc bitsream. P.S. I do not know whether it is being done even now, for example convertion from jpeg 4:2:0 to avc 4:2:0 should change chroma siting from center to left, but does it happen?
     7In particular it is very important that chroma siting (which is different for JPEG, avc and HDR in HEVC) will be correctly set in VUI in avc/hevc bitsream. P.S. I do not know whether it is being done even now, for example '''convertion''' from jpeg 4:2:0 to avc 4:2:0 should change chroma siting from center to left not just tag it, but does it happen?
    88
    99Ideally we should set all parameters: range, matrix and primaries/trc and that will immediatelly write nclx atom in mp4.