[FFmpeg-trac] #5874(avcodec:open): tiff LZW compression does not compress enough

FFmpeg trac at avcodec.org
Mon May 14 21:19:22 EEST 2018


#5874: tiff LZW compression does not compress enough
-------------------------------------+-----------------------------------
             Reporter:  jsteinkamp   |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  tif          |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------
Changes (by jamrial):

 * priority:  normal => wish
 * type:  defect => enhancement


Comment:

 tiffcp from the libtiff package compresses it even more, from ~716k to
 ~691k. In contrast the output generated by libavcodec is ~884k.

 Our lzw encoder is apparently inefficient, so changing this to an
 enhancement request.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5874#comment:8>
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