On Sat, Nov 11, 2023 at 7:29 PM Mark Filipak <markfilipak.i...@gmail.com> wrote:
> I'm sorry. I made a DTS mistake... > > Here's what I'm doing: > -bsf:v setts=time_base=1/24000:pts=N*1001:dts=N*1001 > > Here's the result: > frame pts dts > 0 0 2002 <= should be 0 > 1 3003 <= should be 1001 3003 <= should be 1001 > 2 4004 <= should be 2002 4004 <= should be 2002 > 3 2002 <= should be 3003 5005 <= should be 3003 > 4 5005 <= should be 4004 6006 <= should be 4004 > 5 1001 <= should be 5005 7007 <= should be 5005 > 6 8008 <= should be 6006 8008 <= should be 6006 > 7 9009 <= should be 7007 9009 <= should be 7007 > 8 7007 <= should be 8008 10010 <= should be 8008 > 9 10010 <= should be 9009 11011 <= should be 9009 > 10 6006 <= should be 10010 12012 <= should be 10010 > 11 13013 <= should be 11011 13013 <= should be 11011 > 12 12012 <= should be 12012 14014 <= should be 12012 > 13 14014 <= should be 13013 15015 <= should be 13013 > 14 11011 <= should be 14014 16016 <= should be 14014 > 15 17017 <= should be 15015 17017 <= should be 15015 > 16 18018 <= should be 16016 18018 <= should be 16016 > > The source video is 'NTSC'-soft. > Can this be explained? > Can it be countered? > > PTSs in frames 1..5 are +2 +2 -1 +1 -4 > PTSs in frames 6..10 are +2 +2 -1 +1 -4 > PTSs in frames 11..15 are +2 +0 +1 -3 +2 > I'm baffled. > N is packet number, and it goes in different order. Can be confirmed with: ffmpeg -i <video> -c copy -f framecrc - > > > Hi, > > I'm getting some 'wandering' PTSs in the target video. > The target's PTSs are all in the form 'N*1001', but they go up and down as > though 'N' goes up and down. > > -bsf:v setts=time_base=1/24000:pts=N*1001:dts=N*1001 > > The source video is 'NTSC'-soft. > > In order to test further, I need a way to change the soft telecine tags in > the source VOBs. I've > spent 2 days trying various things. > > Is there a way to rewrite tags in a source's PES headers prior to decoding? > > Thanks -- Mark. > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".