[FFmpeg-trac] #6475(undetermined:new): NVENC: -coder 0 parameter produces no error, but does not disable CABAC

[FFmpeg]

#6475: NVENC: -coder 0 parameter produces no error, but does not disable CABAC
-------------------------------------+-------------------------------------
             Reporter:  alexpigment  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  nvenc,       |               Blocked By:
  cabac, coder, intra                |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 When using h264_nvenc, if -coder 0 is specified in command line, no errors
 or warnings are given, yet the resulting video still uses CABAC. If this
 is not the valid parameter to use, it should give a warning. Otherwise, it
 should be hooked up to the appropriate parameter from the API.


 How to reproduce:
 {{{
 % ffmpeg -f lavfi -i smptebars -c:v h264_nvenc -s 1920x1080 -aspect 16:9
 -r 29.97 -t 30 -coder 0 output.mp4
 }}}
 View result in MediaInfo to confirm that CABAC is used.

 ffmpeg version N-86330-gbd1179e
 built on 2017-06-01

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Ticket URL: <https://trac.ffmpeg.org/ticket/6475>
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