[FFmpeg-trac] #4569(undetermined:new): DNxHD as Input produce from color/gamma in output

FFmpeg trac at avcodec.org
Wed May 20 16:35:39 CEST 2015


#4569: DNxHD as Input produce from color/gamma in output
-------------------------------------+-------------------------------------
             Reporter:  jb_alvarado  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 We try to convert DNxHD files to x264/mp4, to prores we have also try, so
 I guess the output format doesn't matter. The output has always wrong
 colors, it looks like a wrong gamma value or something similar.

 The DNxHD files comes from adobe media encoder and have a bt709 matrix. I
 put a picture to the post. The left side is the original DNxHD and the
 right side is x264. You see more saturation in the middle tone and all is
 a bit darker.

 My command is:
 ffmpeg -i dnxhd45.mov -pix_fmt yuv420p -c:v libx264 -crf 21 -preset slower
 -c:a libfdk_aac -b:a 128k output.mp4

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Ticket URL: <https://trac.ffmpeg.org/ticket/4569>
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