HowTo: Mac Mini '09 + MythTV as Media Center, DVR - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 33 Old 11-17-2009, 07:05 PM
tji
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Originally Posted by brianboonstra View Post

That's interesting. I had hoped that CoreVideo would be automatically offloading to the GPU, at least eventually. Is that not the case?

The CoreVideo could give you hardware scaling and colorspace conversion, but not the MPEG2/H.264 decoding acceleration. As far as I know, there is no open API to take advantage of the GPU hardware capabilities in Mac OS X.
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post #32 of 33 Old 11-18-2009, 10:04 AM - Thread Starter
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Originally Posted by tji View Post

As far as I know, there is no open API to take advantage of the GPU hardware capabilities in Mac OS X.

Well, there's now OpenCL which has some image support but I don't think anyone has done MPEG work with it, just the simple image stuff.

Judging from the well-reasoned and detailed post found on an EyeTV forum we should never expect QuickTime X or CoreVideo to support this playback.
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post #33 of 33 Old 11-18-2009, 10:12 AM
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Originally Posted by tji View Post

...As far as I know, there is no open API to take advantage of the GPU hardware capabilities in Mac OS X.

Actually, there is: OpenCL (pdf) was introduced in 10.6

As I understand it, OpenCL lets a program use supported GPU hardware for more than just graphics tasks. I think.
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