[FFmpeg-trac] #3511(undetermined:new): support FrameRate in dpx files

[FFmpeg]

#3511: support FrameRate in dpx files
-------------------------------------+-------------------------------------
               Reporter:  dericed    |                  Owner:
                   Type:             |                 Status:  new
  enhancement                        |              Component:
               Priority:  normal     |  undetermined
                Version:  git-       |               Keywords:  dpx
  master                             |               Blocking:
             Blocked By:             |  Analyzed by developer:  0
Reproduced by developer:  0          |
-------------------------------------+-------------------------------------
 Summary of the enhancement:

 A request for frame rate support in the dpx encoder/decoder. The dpx
 IndustryFilmInfoHeader (and the Television one) have a frame rate field.
 See: http://www.fileformat.info/format/dpx/egff.htm

 How to reproduce:

 Making a test set of dpx files at 18 fps. I use -t 1 and -r:v 18 so 18 dpx
 files are created.
 {{{
 ffmpeg -f lavfi -i color -r:v 18 -t 1 -f image2 -y 18fps_%06d.dpx
 ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
   built on Mar 26 2014 16:18:04 with Apple LLVM version 5.0
 (clang-500.2.79) (based on LLVM 3.3svn)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/2.2 --enable-shared
 --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree
 --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang
 --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-
 libmp3lame --enable-libxvid --enable-ffplay --enable-libopenjpeg --extra-
 cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 '
   libavutil      52. 66.100 / 52. 66.100
   libavcodec     55. 52.102 / 55. 52.102
   libavformat    55. 33.100 / 55. 33.100
   libavdevice    55. 10.100 / 55. 10.100
   libavfilter     4.  2.100 /  4.  2.100
   libavresample   1.  2.  0 /  1.  2.  0
   libswscale      2.  5.102 /  2.  5.102
   libswresample   0. 18.100 /  0. 18.100
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, lavfi, from 'color':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240
 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
 Output #0, image2, to '18fps_%06d.dpx':
   Metadata:
     encoder         : Lavf55.33.100
     Stream #0:0: Video: dpx, rgb24, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 200
 kb/s, 90k tbn, 18 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo -> dpx)
 Press [q] to stop, [?] for help
 frame=   18 fps=0.0 q=-1.0 Lsize=N/A time=00:00:01.00 bitrate=N/A dup=0
 drop=4
 video:4079kB audio:0kB subtitle:0 data:0 global headers:0kB muxing
 overhead -100.000526%
 }}}

 Reading the first dpx shows a default frame rate of 25.
 {{{
 ffmpeg -i 18fps_000001.dpx
 ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
   built on Mar 26 2014 16:18:04 with Apple LLVM version 5.0
 (clang-500.2.79) (based on LLVM 3.3svn)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/2.2 --enable-shared
 --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree
 --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang
 --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-
 libmp3lame --enable-libxvid --enable-ffplay --enable-libopenjpeg --extra-
 cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 '
   libavutil      52. 66.100 / 52. 66.100
   libavcodec     55. 52.102 / 55. 52.102
   libavformat    55. 33.100 / 55. 33.100
   libavdevice    55. 10.100 / 55. 10.100
   libavfilter     4.  2.100 /  4.  2.100
   libavresample   1.  2.  0 /  1.  2.  0
   libswscale      2.  5.102 /  2.  5.102
   libswresample   0. 18.100 /  0. 18.100
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, image2, from '18fps_000001.dpx':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: dpx, rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25
 tbn, 25 tbc
 At least one output file must be specified
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3511>
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