[FFmpeg-trac] #2640(undetermined:new): When dropping most frames, conversion from yuvj420p to gbrp becomes faster if explicitly asking rgb24 intermediate

FFmpeg trac at avcodec.org
Tue Jun 4 22:34:35 CEST 2013


#2640: When dropping most frames, conversion from yuvj420p to gbrp becomes faster
if explicitly asking rgb24 intermediate
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             Reporter:  b_jonas      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  minor        |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Replying to [ticket:2640 b_jonas]:
 > I believe that direct color space conversion to gbrp should not add this
 much overhead if I am dropping most of the output frames anyway, because
 the color space conversion should be needed only for the frames kept.

 I strongly suspect you can achieve that higher performance if you put the
 fps filter in front of the scale filter in your filter chain.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2640#comment:3>
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