[FFmpeg-devel] [PATCH] libvpx: add 2 pass setting mapping
Tue Jun 8 20:24:26 CEST 2010
On Tue, Jun 8, 2010 at 11:09 AM, 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 is *literally* qcomp: 0 is CBR, 1 is VBR, everything in between
lies along the scale. Any particular reason it can't map to qcomp?
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