[FFmpeg-trac] #7004(documentation:open): Documentation: please clarify jpeg2000 encoding quality range

FFmpeg trac at avcodec.org
Sat Dec 19 19:47:23 EET 2020


#7004: Documentation: please clarify jpeg2000 encoding quality range
-------------------------------------+-------------------------------------
             Reporter:  cri          |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  minor        |                Component:
                                     |  documentation
              Version:  git-master   |               Resolution:
             Keywords:  j2k          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by Balling):

 Also, should not .i64 = 1 be here?

 https://github.com/FFmpeg/FFmpeg/blob/069d2b4a50a6eb2f925f36884e6b9bd9a1e54670/libavcodec/j2kenc.c#L1822

 Why it is printing ffmpeg -h encoder=jpeg2000


 {{{
   -pred              <int>        E..V....... DWT Type (from 0 to 1)
 (default dwt97int)
      dwt97int        0            E..V.......
      dwt53           0            E..V.......
 }}}

 Why dwt53 is 0?? it should be 1, no?

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Ticket URL: <https://trac.ffmpeg.org/ticket/7004#comment:2>
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