[FFmpeg-trac] #5668(avcodec:new): webp : implement fancy filtering (was: webp : lossy decoding have lower quality than official decoder)

FFmpeg trac at avcodec.org
Sun Jun 26 00:07:14 CEST 2016

#5668: webp : implement fancy filtering
             Reporter:  mvignali     |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  webm lossy   |               Blocked By:
  fancy                              |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
Changes (by mvignali):

 * keywords:  webm lossy => webm lossy fancy
 * type:  defect => enhancement


 After more tests :
 if we output yuv frame from webp sample using ffmpeg or dwebp, the files
 are binary exact.

 When converting webp file to png with ffmpeg, the result is very close to
 the output of dwebp using the nofancy option.
 ./dwebp rgb_webp_q80.webp -nofancy -o res.png

Ticket URL: <https://trac.ffmpeg.org/ticket/5668#comment:1>
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