[FFmpeg-trac] #3020(FFmpeg:new): FFMPEG performance need optimize when transcoding to mjpeg

[FFmpeg]

#3020: FFMPEG performance need optimize when transcoding to mjpeg
--------------------------------------+----------------------------------
             Reporter:  kaifu.tang    |                    Owner:
                 Type:  enhancement   |                   Status:  new
             Priority:  normal        |                Component:  FFmpeg
              Version:  git-master    |               Resolution:
             Keywords:  mjpeg ffmpeg  |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  1             |
--------------------------------------+----------------------------------
Changes (by michael):

 * analyzed:  0 => 1
 * keywords:  mjpeg => mjpeg ffmpeg
 * version:  2.0.1 => git-master
 * component:  undetermined => FFmpeg
 * reproduced:  0 => 1


Comment:

 jpeg does not support yuv420, it uses yuvj420 which needs colorspace
 convertion that msmpeg4 does not need.
 and scaling is done before framerate handling currently.
 You can force it to be done the other way around with -vf fps=0.2,scale

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3020#comment:5>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker