[FFmpeg-trac] #6465(undetermined:new): wrong metadata for the DNxHD codec prevent playback on Specialized Broadcast Hardware

[FFmpeg]

#6465: wrong metadata for the DNxHD codec prevent playback on Specialized
Broadcast Hardware
-------------------------------------+-------------------------------------
             Reporter:  NNois        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 hi,

 the "encoder" text metadata reported by ffmpeg with the dnxhd codec are
 wrong and this is blocking the playback possibility with many Specialized
 Broacast Hardware

 the DNxHD encoder has profiles (doc):
 {{{
   -profile           <int>        E..V.... (from 0 to 5) (default dnxhd)
      dnxhd                        E..V....
      dnxhr_444                    E..V....
      dnxhr_hqx                    E..V....
      dnxhr_hq                     E..V....
      dnxhr_sq                     E..V....
      dnxhr_lb                     E..V....

 }}}

 but all profiles Output the same "encoder" text Metadata, and this is not
 respecting the original Avid DNxHD encoder profiles..

 for example the dnxhr_444 reports
 {{{
 encoder         : Lavf57.72.101
     Stream #0:0(eng): Video: dnxhd (DNXHR 444) (AVdh / 0x68645641),
 yuv444p10le(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-1024, 200
 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
     Metadata:
       creation_time   : 2017-06-15T13:05:36.000000Z
       handler_name    : Gestionnaire d▒alias Apple
       timecode        : 00:00:00:00
       encoder         : DNxHD 709

 }}}

 but the apple codecs (with avid codecs) reports the "encoder" text
 {{{
     Stream #0:0(eng): Video: dnxhd (DNXHR 444) (AVdh / 0x68645641),
 yuv444p12le(tv, bt709/unknown/unknown), 1920x1080, 367001 kb/s, SAR 1:1
 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
     Metadata:
       creation_time   : 2017-06-15T13:01:01.000000Z
       handler_name    : Gestionnaire d▒alias Apple
       encoder         : DNxHR
       timecode        : 00:00:00:00

 }}}

 to continue the avid codec reports the dnxhd "encoder" text with two
 spaces between DNxHD and 709, here's an ouput
 {{{
 Stream #0:0(eng): Video: dnxhd (DNXHD) (AVdn / 0x6E645641),
 yuv444p10le(tv, bt709/unknown/unknown), 1920x1080, 367001 kb/s, SAR 1:1
 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
     Metadata:
       creation_time   : 2017-06-15T13:05:36.000000Z
       handler_name    : Gestionnaire d▒alias Apple
       encoder         : DNxHD  709
       timecode        : 00:00:00:00
 }}}

 so, the "encoder" text should be:

 dnxhd         "DNxHD  709"
 dnxhr_444     "DNxHR"
 dnxhr_hqx     "DNxHR"
 dnxhr_hq      "DNxHR"
 dnxhr_sq      "DNxHR"
 dnxhr_lb      "DNxHR"

 One second problem is that normaly the switch
 -metadata:s encoder="DNxHD  709" works (for example the prores encoder
 needs special encoder by codec) but in the case with the mdxhd encoder
 this option has no effect and we can't change the "encoder" text

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6465>
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