[FFmpeg-trac] #6082(avformat:new): dv muxer accepts all framerates

[FFmpeg]

#6082: dv muxer accepts all framerates
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               Reporter:  cehoyos     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  minor       |              Component:  avformat
                Version:  git-master  |               Keywords:  dvvideo
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
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 As reported by forum user tygerbug, libavformat does not warn if an
 incorrect framerate is used when writing a dv file:
 {{{
 $ ffmpeg -f lavfi -i testsrc=s=720x480:rate=10 -pix_fmt yuv411p -y -t 20
 out.dv
 ffmpeg version N-83100-ge109c54 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      55. 43.100 / 55. 43.100
   libavcodec     57. 72.100 / 57. 72.100
   libavformat    57. 62.100 / 57. 62.100
   libavdevice    57.  2.100 / 57.  2.100
   libavfilter     6. 69.100 /  6. 69.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
   libpostproc    54.  2.100 / 54.  2.100
 Input #0, lavfi, from 'testsrc=s=720x480:rate=10':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 720x480
 [SAR 1:1 DAR 3:2], 10 tbr, 10 tbn, 10 tbc
 Output #0, dv, to 'out.dv':
   Metadata:
     encoder         : Lavf57.62.100
     Stream #0:0: Video: dvvideo, yuv411p, 720x480 [SAR 1:1 DAR 3:2],
 q=2-31, 200 kb/s, 10 fps, 10 tbn, 10 tbc
     Metadata:
       encoder         : Lavc57.72.100 dvvideo
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> dvvideo (native))
 Press [q] to stop, [?] for help
 frame=  200 fps=0.0 q=-0.0 Lsize=   23438kB time=00:00:20.00
 bitrate=9600.0kbits/s speed=53.6x
 video:23438kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.000000%
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/6082>
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