Dual Core Xvid and X264 codecs?

[frazie]

Hi, I compress a lot of videos, I was wondering is there a Dual Core XVID and X264 codec? If so could you link me to them please? I can't seem to find them, I have a dual core system so it would be a great speed bump!

[jagabo]

For Xvid go to:

http://www.koepi.org/xvid.shtml

And download the "latest unstable binary":

http://www.koepi.org/XviD-1.2.-127-25022006.exe

After installing it you have to enable multithreading by going to the "Other Options" from the Xvid Configuration dialog. Set "Number of Threads" the number of cores you have, probably 2.

[celtic_druid]

Technically there is no multithreaded x264 codec, since it isn't a codec. As for XviD, it is multithreaded, but only for encoding and I suppose the true definition of a multithreaded codec would mean that both decoding and encoding are multithreaded. Sounds like you are only interested in the encoding part anyway.

You can find my builds at http://celticdruid.no-ip.com/xvid/
xvidencraw and XviD VfW are both multithreaded as is x264 cli. Plenty of other x264 builds around though (Sharktooth, x264.nl, etc.) and all of them are multithreaded. Koepi did an early 1.2cvs build, but that is about it for other XviD builds other than Squid_80's own xvidencraw builds. Probably you want VfW though and x264 VfW is dead. There are some newer builds I think on DTS' site, however it was pretty much always multithreaded.

[kschang]

You may think you know what a codec is, but it's time for you to learn what is asymetric compression technology. Modern video compression is asymetric, which means encoding takes far more time and CPU power than the decoding.

[celtic_druid]

AVC still takes a fair amount of power to decode, especially at HD resolutions. Also whilst encoding can take as long as it needs to, decoding needs to be done real time. So on a multicore setup, you really want an SMP enabled AVC decoder or at least GPU acceleration to share the load.

My point was that x264 can't decode. It is an encoder only, hence not a codec. XviD, the encoder is multithreaded, but the decoder isn't so as a codec (encoder and decoder) technically it is only half multithreaded. ASP MPEG-4 doesn't require the kind of power that AVC does to decode though.