[Mplayer-cvslog] CVS: main/libvo vo_dxr3.c,1.63,1.64

[Arpi]

Hi,

> 
> though, how can P frames slow it down? and make better quality, aren't 
> they based on motion vectors etc from the previous I-frame?

they are
if tyou do I-only, the decoding can be avoided, as frames are independent.
if yo do IPPPPPP, the encoder have to decode each encoded frame, and
compensate encoding error in the enxt P frame. its' slower, but by
compensating qual=ntization errors it results in better quality

unfortunatelly mpeg1 has very strict limitation of quantized factors,
afair it's -127..+127, it is not enough for perfect image.
but using P frames it isn't a problem.
(mpeg1 was designed for IPBBPBBPBBP sequences)


A'rpi / Astral & ESP-team

--
Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu