h.264 Encoding Only Using 1 Processor?

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cdub
Posts: 2
Joined: Mon Mar 26, 2007 5:02 am

h.264 Encoding Only Using 1 Processor?

Post by cdub »

Hi All,

I've been playing with Handbrake on Windows, and am digging it. But, I have a question about multiprocessor use under h.264.

When I encode using the standard Mpeg4 option, handbrake uses about 90% of my available CPU resources, which means that it's using both cores.

However, when I do h.264 (any of the three options) the CPU use only hits 50%. So, while I can do a two pass Mpeg4 encode in about an hour, it takes like 4 hours to do h.264.

Anyone know why handbrake uses both of my CPUs under Mpeg4, but only 1 CPU under h.264? I tried searching the forum and didn't see anyone else mention this.

Thanks :)

EDIT: I tried changing the # of processors to 2, and the results are the same. Also, I always just rip with the output file size set to 4000 since I'm just transferring DVDs to disk for my AppleTV

cdub
Posts: 2
Joined: Mon Mar 26, 2007 5:02 am

Post by cdub »

In this thread:

http://handbrake.m0k.org/forum/viewtopic.php?t=652

One of the admins posted an updated hbcli.exe file for download:

http://download.m0k.org/handbrake/hbcli.exe

This seems to have fixed the one processor issue. H264 encoding now uses both of my processors and runs about 12fps faster.

Thanks :D

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