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[tgdaily] GPU transcodes four 1080p video files in real time

post #1 of 26
Thread Starter 
Quote:
San Francisco (CA) - It appears that graphics cards have finally found a non-gaming marketing focus: Video.

Both ATI and Nvidia have been beating the drum of video transcoding for some time, promising a far better experience in transcoding your HD and SD videos into handheld formats such as Apple's iPod/iPhone or Sony's PSP. Of course, hardware acceleration does not work without software and both ATI/AMD and Nvidia are relatively weak in this area. It is one side to demonstrate a cool technology, but you really want to have an actually retail/e-tail friendly product to create a convincing story.

Luckily, CyberLink has caught up with GPU transcoding capabilities in summer of 2007 and started to work on adding transcoding to its own software stack. One year later, we are seeing result: The company’s PowerDirector 7 Ultra ships with GPU-accelerated video transcoding.

Shuichi Takagi, CyberLink's vice president of of business development ran a demonstration on a just launched ATI Radeon 4850 512 MB, proving that the hardware and software is capable of converting four HD MPEG-2 movies into MPEG-4 simultaneously - in real time. According to Shuichi, it will take about 30 minutes to process four full-length movies and compress them into handheld-friendly 200+ MB files.

CyberLink's PowerDirector 7 Ultra is available now for $120.
Source
post #2 of 26
If you don't mind me asking linskingdom, but is this the only Video Creation/Converter software that uses the GPU to accelerate the conversion process?
post #3 of 26
wow, great news, 30 min is fast for four movies. So can it do regular movies. Say dvd to ipod, or divx to ipod?
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post #4 of 26
Quote:
process four full-length movies and compress them into handheld-friendly 200+ MB files.
Handheld friendly means baseline profile with most features disabled. 200MB means low bitrate (400kb/s... maybe less!) and a resolution lower than 400x400 or even 300x300 for most devices.

Feature lacking GPU encoders have been around for quite a while. ATI has an H.264 encoder... but it doesn't support most of the H.264 features.

Here's a corrected quad vs GPU encoding speed chart:


"HD Movie" was assumed to be 1280x720.


While these GPU encoders are usually much faster, they don't provide the important features and that's why nobody has releases a full fledged encoder meant for HD material, but only for portable players.

Portable players don't support all the fancy features that allow videos to have great quality anyway, so it's easy to write an encoder for them.
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post #5 of 26
doing dvd to 720x480 in 16:9 ratio my quad only does 10-11 frames per second on the megui insane quality setting.
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post #6 of 26
Thread Starter 
Quote:
Originally Posted by cubanresourceful View Post
If you don't mind me asking linskingdom, but is this the only Video Creation/Converter software that uses the GPU to accelerate the conversion process?
Yes. Take advantage of the latest GPUs this time.
post #7 of 26
Quote:
Originally Posted by Azazel View Post
megui insane quality setting.
Quote:
Portable players don't support all the fancy features that allow videos to have great quality anyway, so it's easy to write an encoder for them.
The insane quality profile won't work in iPods and other portable players. Also, it doesn't encode at DVD resolution, but somewhere around half.

With quality comes low performance. It's the same with games Turn up the graphics and the fps drops.

On my stock E6420, x264 baseline profile, avc level 3, 512x384:


Go to File -> Import profiles in meGUI and import the zip I attached then use X264 PT-Fast.
Edited by Coma - 6/25/08 at 12:36pm
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post #8 of 26
LoL you guys. meGUI? Lawl. Horrible encoder... thats probably the reason you get 10-12 fps. Lower your bitrate.. at that resolution you won't notice the difference.
post #9 of 26
meGUI is not an encoder, shiroi no Domo-kun

It's what the name says. A Media Encoder GUI... what does all the encoding are commandline encoders like xvid_encraw & x264.
meGUI is good because it allows you to keep profiles, a queue, etc. It's convenience and nothing else.

Also, the bitrate you allocate has very little to do with the speed. It doesn't really matter until you use something crazy like 40000Kbps.
Edited by Coma - 6/25/08 at 1:18pm
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post #10 of 26
Uh, I got it but how do I know it is using my graphics card?
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