#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and and it would pose the risk of getting outdated soon.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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