[FFmpeg-devel] [PATCH] libx264 psyrd update V3

Robert Swain robert.swain
Wed Jan 21 22:45:00 CET 2009

2009/1/21 Jason Garrett-Glaser <darkshikari at gmail.com>:
> On Wed, Jan 21, 2009 at 4:34 PM, Marcus Blomenkamp <mblomenk at gmx.de> wrote:
>>> If they're enabled by default, why do you have to specify it *again*
>>> in all the preset files?
>> ffmpeg internal defaults differ from libx264 defaults, for example subq/subme is set to 8 as default, not inside the libx264-ffmpeg glue code but for all codecs.
> But psy-rd is an x264-specific option, so why not give it the correct
> value to begin with?  This repeating of settings in all presets seems
> like an extremely ugly workaround for a non-problem!

Agreed. If it doesn't need to be set in a preset, don't set it.

>> In order not to change application bahaviour for foreign codecs (now and in the future) i have decided to move libx264 specific policies into preset files. Why do you think this is a bad idea?
> Presets are not a proper substitute for the lack of proper per-codec
> defaults in ffmpeg.

Presets are the solution which was proposed and agreed upon. It was
suggested that we could auto-load a preset file (the one named
-default) for per codec defaults however.


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