[x264-devel] Re: deinterlacing video prior to x264 conversion

[Loren Merritt]

On Tue, 11 Oct 2005, Tuukka Toivonen wrote:
>
> PS. In my experiments two-pass encoding doesn't really help compression.
> Typically the bit rate is slightly smaller (0.1% or so) and more accurately
> the target rate and the PSNR is practically the same, sometimes slightly
> worse even (0.01 dB or so).

That's because you're testing on MPEG standard sequences, which are 
one scene each and thus constant complexity. On varied content, 2 pass 
gives much better PSNR than ABR does.

--Loren Merritt

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