[MEncoder-users] x264 encoding slower after updating libx264

[Loren Merritt]

On Sat, 14 Nov 2009, Dâniel Fraga wrote:
> On Sat, 14 Nov 2009, Loren Merritt wrote:
>
>> MB-tree is enabled by default now, didn't exist in api67, and takes a
>> bunch of memory.
>> B-frames and multiref are enabled by default now, weren't in api67, and
>> take some memory and cpu-time.
>> RDO, trellis, and several other options are enabled by default
>> now, weren't in api67, and take cpu-time.
>> All of the above also affect filesize.
>
> 	And all of these options result in better quality? Because I
> didn't notice any improvement in the quality... of course I'm just
> looking at the video (I didn't do any scientific comparison).

All of these options result in better compression ratio. That can be 
either better quality or lower bitrate, depending on what ratecontrol mode 
you choose.

--Loren Merritt