[FFmpeg-trac] #5361(undetermined:new): support for the options of decoding quality of videotoolbox

[FFmpeg]

#5361: support for the options of decoding quality of videotoolbox
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             Reporter:  ponpon       |                     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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 thank ffmpeg team for the good app.

 as i said in the ticket #5272, seeing
 {{{"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/VideoToolbox.framework/Versions/A/Headers/VTDecompressionProperties.h"}}}
 videotoolbox decoder has the options of decoding quality.

 there is a commit of such a function in vlc player.
 [vlc-commits] videotoolbox: add temporal deinterlacer option
 ​https://mailman.videolan.org/pipermail/vlc-
 commits/2015-August/031929.html

 i request supports for the below options.
 for denterlace
 {{{kVTDecompressionPropertyKey_FieldMode}}}
 {{{kVTDecompressionPropertyKey_DeinterlaceMode}}}

 for scale
 {{{kVTDecompressionPropertyKey_ReducedResolutionDecode}}}

 for frame drop
 {{{kVTDecompressionPropertyKey_ReducedFrameDelivery}}}
 {{{kVTDecompressionPropertyKey_OnlyTheseFrames}}}

 for realtime playback
 {{{kVTDecompressionPropertyKey_SuggestedQualityOfServiceTiers}}}

 though there are some options pixel formats and
 {{{kVTDecompressionPropertyKey_ReducedCoefficientDecode}}}, i don't
 evaluate these.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5361>
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