[FFmpeg-devel] [PATCH] libvpx: add 2 pass setting mapping

Michael Niedermayer michaelni
Thu Jul 22 14:23:13 CEST 2010


On Mon, Jul 12, 2010 at 04:32:55PM -0400, James Zern wrote:
> On Tue, Jun 8, 2010 at 14:09, James Zern <jzern at google.com> wrote:
> > The attached adds a mapping for libvpx/rc_2pass* based on comments
> > from earlier thread "[PATCH] add encode options to libvpxenc"
> > regarding use of qcompress.
> >
> > Descriptions of the libvpx settings:
> > ? ? ? ? * Bias, expressed on a scale of 0 to 100, for determining target size
> > ? ? ? ? * for the current frame. The value 0 indicates the optimal CBR mode
> > ? ? ? ? * value should be used. The value 100 indicates the optimal VBR mode
> > ? ? ? ? * value should be used. Values in between indicate which way the
> > ? ? ? ? * encoder should "lean."
> > ? ? ? ? rc_2pass_vbr_bias_pct
> >
> > ? ? ? ? * This value, expressed as a percentage of the target
> > bitrate, indicates
> > ? ? ? ? * the minimum bitrate to be used for a single GOP (aka "section")
> > ? ? ? ? rc_2pass_vbr_minsection_pct
> >
> > ? ? ? ? * This value, expressed as a percentage of the target
> > bitrate, indicates
> > ? ? ? ? * the maximum bitrate to be used for a single GOP (aka "section")
> > ? ? ? ? rc_2pass_vbr_maxsection_pct
> >
> 
> Any reason to keep these back?

no, the patch looks ok

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Concerning the gods, I have no means of knowing whether they exist or not
or of what sort they may be, because of the obscurity of the subject, and
the brevity of human life -- Protagoras
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