[FFmpeg-trac] #11339(undetermined:new): ffmpeg misdetecting framerate of dv

[FFmpeg]

#11339: ffmpeg misdetecting framerate of dv
-------------------------------------+-------------------------------------
             Reporter:  dave rice    |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  7.1          |               Resolution:
             Keywords:  dv           |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by dave rice):

 Am noting that in ffmpeg at 5.1.6 the frame rate is as expected at 29.97 fps,
 rather than 60k fps.
 {{{
 e$ ffmpeg -i test.dv
 ffmpeg version 5.1.6 Copyright (c) 2000-2024 the FFmpeg developers
   built with Apple clang version 14.0.0 (clang-1400.0.29.202)
   configuration: --prefix='/usr/local/Cellar/ffmpeg at 5/5.1.6_3'
 --datadir='/usr/local/Cellar/ffmpeg at 5/5.1.6_3/share/ffmpeg' --enable-
 shared --enable-pthreads --enable-version3 --cc=clang --host-cflags=
 --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-
 libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-
 libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-
 librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1
 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-
 libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-
 libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma
 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-
 libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
 libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-
 libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
   libavutil      57. 28.100 / 57. 28.100
   libavcodec     59. 37.100 / 59. 37.100
   libavformat    59. 27.100 / 59. 27.100
   libavdevice    59.  7.100 / 59.  7.100
   libavfilter     8. 44.100 /  8. 44.100
   libswscale      6.  7.100 /  6.  7.100
   libswresample   4.  7.100 /  4.  7.100
   libpostproc    56.  6.100 / 56.  6.100
 [dv @ 0x7fef5e805240] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, dv, from 'test.dv':
   Metadata:
     timecode        : 00:00:00:00
   Duration: 00:00:01.97, start: 0.000000, bitrate: 28771 kb/s
   Stream #0:0: Video: dvvideo, yuv411p, 720x480 [SAR 8:9 DAR 4:3], 25000
 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn
   Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
 At least one output file must be specified
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11339#comment:1>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker