[x264-devel] CRF and VBV

[Jason Garrett-Glaser]

On Wed, Oct 17, 2012 at 10:33 PM, Karthick Kumar <karthik1990r at gmail.com> wrote:
> Hi,
>        Right now, I'm increasing CRF during encoding( on the fly) to save
> bandwidth consumption but not using VBV . Is it worth considering to use VBV
> along with CRF in the current implementation? I don't understand what
> additional benefit I get if I use VBV along with CRF. Right now, If I use
> VBV + CRF , I get degrade in quality only. I use encoder in streaming
> environment.

You should be using VBV.  Your use-case limitation is a bitrate
limitation, not a quality limitation; adjusting CRF is not going to
work effectively to cap the output bitrate of x264.

Jason