[FFmpeg-trac] #7016(undetermined:new): Timecode incorrect when transcoding 59.94 to 29.97

FFmpeg trac at avcodec.org
Sat Feb 10 00:44:12 EET 2018


#7016: Timecode incorrect when transcoding 59.94 to 29.97
--------------------------------------+----------------------------------
             Reporter:  mcoliver      |                     Type:  defect
               Status:  new           |                 Priority:  normal
            Component:  undetermined  |                  Version:  3.4
             Keywords:  timecode      |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
--------------------------------------+----------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 % ffmpeg.exe -y -r 59.94 -i SRC.mov -acodec copy -c:v libx265 -crf 28 -vf
 "transpose=1" -r 29.97 DST.mov
 ffmpeg version: N-89955-g118e1b0b33
 }}}

 Timecode when transcoding from 59.94 --> 29.97 timecode is not being
 calculated correctly resulting in incorrect start and end timecodes.
 Tested on multiple input and output codecs including prores, h264, h265

 Start timecode on 59.97 is 09:31:58:30.
 Start timecode on 29.97 is 09:31:59:00.
 It should be 09:31:58:15

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7016>
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