[x264-devel] Re: no gain in 2PASS for very low bitrates

[Robert Swain]

Hey,

On 12/25/05, Guillaume POIRIER <poirierg at gmail.com> wrote:
> Hi,
> On 12/25/05, Patrick Lefevre <pat at wischip.com> wrote:
> > I have used 10,000 frames content (with bunch of scene changes) @ 30fps
> > in 2 pass mode. 1080p is still excellent quality down to 2Mb (4Mb peak).
> > What is considered low bit-rate?]. For playback, I used mplayer,
> > otherwise the decoding filter appears too slow (?), at least if used
> > with mediaplayer. [1221 snapshot]
>
> My definition low low bitrate is when you encode a DVD size video with
> a bit per pixel ratio lower than 0.9 with a H.264 codec. Some ppl
> won't agree with that as it widely depends on what kind of quality you
> target.

I think you mean 0.09 bpp. :) But of course we both know that's a
rough estimate and the requirement varies based on content. Consider
it a guideline for 'an average DVD' as your source.

-- 
This is the x264-devel mailing-list
To unsubscribe, go to: http://developers.videolan.org/lists.html