[FFmpeg-trac] #7973(documentation:new): Provide info about default qualitiy for each codec

[FFmpeg]

#7973: Provide info about default qualitiy for each codec
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             Reporter:  Ulf Zibis    |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  wish         |                Component:
                                     |  documentation
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by inof):

 Actually, the default value of libx264 for CRF is 23.0.

 The FFmpeg documentation says: “To get a more accurate and extensive
 documentation of the libx264 options, invoke the command **x264
 --fullhelp** or consult the libx264 documentation.”

 Accordingly, the `x264 --fullhelp` command states the CRF default value
 (all defalts are in square brackets):
 {{{
       --crf <float>           Quality-based VBR (-12-51) [23.0]
 }}}
 If you prefer to look it up online, all of the defaults of libx264 are
 listed on its project homepage
 [https://wiki.videolan.org/Documentation:Modules/x264/ on this web page]
 (under the chapter “Rate control”).

 I think that the FFmpeg project should not include a copy of all of the
 documentation of external libraries. That would be a needless duplication,
 and and it would pose the risk of getting outdated soon. It's better to
 refer to the respective project's own documentation, as is already done in
 this case.

 I suggest that this ticket can be closed.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/7973#comment:2>
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