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 MattAll noise, no signal.Premium
join:2003-07-20
Jamestown, NC
kudos:12 | reply to lafaze
Re: x264 and Intel 4500MHD Intel has been VERY good about open sourcing their work. If there's nothing out there for the 4500, the open source community just hasn't written it. | | |
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| said by Matt:Intel has been VERY good about open sourcing their work. If there's nothing out there for the 4500, the open source community just hasn't written it. I disagree. MCPHC people asking intel for specification to add hardware acceleration in September 2008.
»software.intel.com/en-us/forums/···c/60703/
Eric of intel finally in March 2009, after only starting in September after many months, with MCPHC peoples help, finally enabled vista exclusive non commerical h264 acceleration.
»software.intel.com/en-us/blogs/2···h264avc/
Thus, there was no non commerical hardware acceleration support until March 2009 because of Intel lack of disclosure in accordance to HDCP(created by intel itself). On the other hand, intel's commercial partners, privy to technical access, were able to quickly put out hardware acceleration supported software like cyberlink.
So lack of hardware acceleration was not because of lack of effort of the open source community, but because lack of Intel openness with the technical detail for h264 acceleration due to Intel following very stringent HDCP rules. In contrast, open source writers working with ATI and Nvidia, did not have the same coding problem given that ATI and Nvidia were very loose with technical disclosure and HDCP rules.
So why am I taking my time writing this? Having a HDTV in the family room, I chose specifically a labtop with 4500 mhd with "264 hardware acceleration" and hdmi to play hi def. When it didn't work properly b/c of decisions by intel, of course I was disappointed in intel.
It might be their technical and legal right to do whatever they want with their product, but it seems wrong to the consumer that a key feature of a product is not working because of things like HDCP. Also forcing consumer to buy commercial software to enable a advertised feature while they get their act together seems to state that intel priorities are not their consumers but again their commercial partners.. Again their right, but yeah...
I still have very inconsistent h264 acceleration using a combination of MPCHC dxva and cyberlink h264 plug in, despite taking many hours looking at forums to get the dang thing to work. In contrast, my daughter's cheap desktop integrated nvidia 8100 mGPU with just free MPCHC and no commercial software plays h264 material with flying colors avoiding the intel headache I have. | |
MattAll noise, no signal.Premium
join:2003-07-20
Jamestown, NC
kudos:12 | The G45 was released in mid-2008. So if Intel was asked to provide the spec in September and there was something working in March, I'd say that's pretty damn good. Especially since nVidia won't open source their drivers at all. The page you linked to details that an Intel engineer himself fixed the problem. | |
| said by Matt:The G45 was released in mid-2008. So if Intel was asked to provide the spec in September and there was something working in March, I'd say that's pretty damn good. Especially since nVidia won't open source their drivers at all. The page you linked to details that an Intel engineer himself fixed the problem. No if you read them carefully. 1st post is MPCHC open source people asking for technical details to get the hardware to work in Sep 2008. Also again Nvidia and ATI disclosure has been more open that why open source has gotten h264 to work correctly.
"So my question is : does Intel use a specific protocol for bitstream decoder, and if so is it possible to have the specifications?"
Feb 2009 is when a Intel person finally responded to that request, and March 2009 is when Eric of Intel with the help of the open source MPCHC people got it working. NOTICE: It was Eric of intel doing all the work, while the open source people just provided technical help in regards to open source MPCHC, and not the other way around, again to what I suspect to keep Intel "trade" secrets.
So September, Oct, Nov, Dec 2008, January, February 2009. Several months of idle in 2008, 2009, finally a response in 2009? Not exactly responsive, the same MPCHC people coded ATI and Nvidia h264 hardware stuff for their open source player months ahead of time. If open source people can do Ati and Nvidia that fast and they aren't paid, then why can't Intel be more responsive. In fact if for Eric's generosity and whim, there would be no non commercial 264 acceleration.
Also the fact, that intel person said XP wouldn't be supported, limits the options of people who has issues with Vista. I don't know the technical details, but my daughter XP machine with the nvidia integrated runs h264 acceleration fine and that chip was released earlier than the 4500 mhd so I don't think it a technical. I suspect HDCP rules again.....Intel and Microsoft with HDCP can be scary. And yes, there were people like me trying to get h264 to work right without luck in 2008 and even now because the 4500 mhd h264 is far from perfect.
I have not installed windows 7 RC on the labtop b/c I don't like the hassle of switching or dual booting a computer. But if windows 7 runs h264 acceleration well for the 4500 mhd like some people posting on forums say, then Intel has a real double standard on how they treat their commercial (Microsoft, cyberlink) and open source counterparts in regards technical disclosure. I don't know why you are defending Intel or doubting what I am saying because they you sticking it to you and me. So yes I am frustrated with intel. | |
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