[FFmpeg-trac] #8216(ffmpeg:reopened): Very slow yuv file writer

FFmpeg trac at avcodec.org
Thu Oct 3 20:38:24 EEST 2019


#8216: Very slow yuv file writer
-------------------------------------+-------------------------------------
             Reporter:  xiaotiansf   |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  important    |                Component:  ffmpeg
              Version:  unspecified  |               Resolution:
             Keywords:  Slow YUV     |               Blocked By:
  writer                             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by xiaotiansf):

 * status:  closed => reopened
 * resolution:  invalid =>


Comment:

 I compared the performance between openh264 decoder standalone h264dec.exe
 and ffmpeg via libopenh264 decoder. ffmpeg yuv writing uses 9x time of
 h264dec's yuv writing from profiler.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8216#comment:4>
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