[FFmpeg-trac] #9390(undetermined:new): Wrong FPS used for timecode computation mangles timecodes

[FFmpeg]

#9390: Wrong FPS used for timecode computation mangles timecodes
-------------------------------------+-------------------------------------
             Reporter:  Marcelo      |                    Owner:  (none)
  Magnasco                           |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  timecode     |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Marcelo Magnasco):

 Replying to [comment:3 Balling]:
 > Yes please paste on dropbox:
 > {{{
 > [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7ffb6b80ac00] Using non-standard frame rate
 29/1
 >
 > }}}
 > file. "480p/60fps preview of 008" file you attached is useless.

 No, Balling, it is NOT useless. The clip is 59.94fps and read as such by
 every other software, but ffprobe sees both 59/1 and 59.94:

 {{{
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f911e00c400] Using non-standard frame rate
 59/1 [...]
     Stream #0:0(eng): Video: h264 [...]  59.94 fps, 59.94 tbr, 60k tbn,
 119.88 tbc (default)
 }}}

 I have nevertheless uploaded all clips to our server:

 [http://sur.rockefeller.edu/Plone/ffmpeg-timecode-issues]

 Let me again reiterate: the only place in the ff suite where the FPS is
 incorrectly truncated to an integer is upon reading the timecode, whereby
 the truncated FPS is used to convert frames-since-midnight to hh:mm:ss:ff.
 Even if I transcode the clip using, say, ffmpeg concat, the new clip is
 created as 59.94 and the hh:mm:ss:ff is translated to frames-since-
 midnight using the correct frame rate.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9390#comment:5>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker