From c60555edbf80b05838156a103f180cdb5d405654 Mon Sep 17 00:00:00 2001 From: gpoirier Date: Mon, 11 Jul 2005 17:52:03 +0000 Subject: x264 fast first pass, patch by Robert Swain < robert POUM swain AH gmail POUM com > git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15965 b3059339-0415-0410-9bf9-f77b7e298cf2 --- DOCS/man/en/mplayer.1 | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'DOCS/man/en') diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1 index 4791b0d74d..94d632bc0f 100644 --- a/DOCS/man/en/mplayer.1 +++ b/DOCS/man/en/mplayer.1 @@ -7947,6 +7947,31 @@ both fast and provide good quality. .REss . .TP +.B turbo=<0\-2> +Fast first pass mode. +During the first pass of a 2 or more pass encode it is possible to gain +speed through disabling some options with negligible to no impact on the +final pass output quality. +.PD 0 +.RSs +.IPs 0 +disabled (default) +.IPs 1 +reduce subq, frameref and disable some inter macroblock partition analysis +modes +.IPs 2 +reduce subq and frameref to 1, use a diamond ME search and disable all +sub-partition analysis modes +.RE +.RS +Level 1 can increase first pass speed up to 2x with no change in the global +PSNR of the final pass compared to a full quality first pass. +.br +Level 2 can increase first pass speed up to 4x with about +/- 0.05dB change +in the global PSNR of the final pass compared to a full quality first pass. +.REss +. +.TP .B keyint= Sets maximum interval between IDR-frames (default: 250). Larger values save bits, thus improve quality, at the cost of seeking -- cgit v1.2.3