A Tsunami of Improvement?

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2:00 AM - 05/18/2009 by William Van Winkle

A long-time favorite tool among transcoders is the Tsunami MPEG Encoder, or TMPGEnc, now owned by Pegasys in Japan. Within the video community, TMPGEnc is considered one of the highest quality transcoders available, although not necessarily one of the fastest. We used TMPGEnc 4.0 Xpress with a 15-second, 1440x1080 clip supplied by Pegasys.

Unlike some other transcoders, TMPGEnc only uses CUDA for effects acceleration. The encoding process itself is currently not GPU-accelerated.  You’re only going to see benefits from CUDA here when the transcode process involves effects/filters such as noise reduction, sharpening, and so on. This is why you need to read the fine print before investing in acceleration technologies and the apps that use them. Make sure that not only the application you’ve picked but also the functions that you need from that application will deliver what you expect.

Talkback
SpadeM 05/18/2009 9:04 AM
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The 8800GS or with the new name 9600GSO goes for 60$ and delivers 96 stream processors. Would it be correct to assume that it would perform betwen the 9600 GT and 9800 GTX you reviewed?

Other then that great article, been waiting for it since we got a sneak preview from Chris last week.

Curnel_D 05/18/2009 9:08 AM
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And I'll never take Nvidia marketing seriously until they either stop singing about CUDA being the holy grail of computing, or this changes: "Aside from Folding@home and SETI@home, every single application on Nvidia’s consumer CUDA list involves video editing and/or transcoding."

Anonymous 05/18/2009 9:15 AM
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As more software will use CUDA, we will not only see a great boost in performance for e.g. video performance, but for parallel programing in general. This sky rocket this business into a new age!

Curnel_D 05/18/2009 9:18 AM
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l0bd0n :
As more software will use CUDA, we will not only see a great boost in performance for e.g. video performance, but for parallel programing in general. This sky rocket this business into a new age!


Honestly, I dont think a proprietary language will do this. If anything, it's likely to be GPGPU's in general, run by Open Computing Language.(OpenCL)

one-shot 05/18/2009 9:23 AM
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Are we both thinking about the same "Pirates 2"? Or am I missing something...

IzzyCraft 05/18/2009 9:35 AM
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Who knows it's just a clip he used he could be naming it anything for the hell of it.

CUDA transcoding is very nice to someone that does H.264 transcoding at a high profile and lacks a 300+ dollar cpu who would spend hours transcoding a dvd on high profile settings.

Else from that CUDA acceleration has just been more of a feature nothing like a main event. Although can easly be the main attraction to someone that does a good flow of H.264 trasncoding/encoding.

Encoding/transcoding in h.264 high profile can easily make someone who is very content with their cpu and it's power become sad very quickly when they see the est time for their 30 min clip or something.

Anonymous 05/18/2009 9:38 AM
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I'm using CoreAVC since support was added for CUDA h264 decoding. I kinda feel stupid for buying a high end CPU (at the time) since playing all videos, no matter the resolution or bit-rate, leaves the CPU at near-idle usage.
Vid card: 8600GTS
CPU: E6700

IzzyCraft 05/18/2009 9:49 AM
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Well you lucked in considering not all of the geforce 8 series supports H.264 decoding etc.

ohim 05/18/2009 10:01 AM
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they should remove Adobe CS4 suite from there since Cuda transcoding is only posible with nvidia CX videocards not with normal gaming cards wich supports cuda.

adbat 05/18/2009 10:05 AM
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CUDA means Miracle in my language :-) I it will do those
The sad thing is that ATI does not truly compete in CUDA department and there is not standard for it.

JeanLuc 05/18/2009 10:26 AM
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I was only really interested in the Badaboom benchmarks and I was fairly impressed but I seem to remember the last time you guys done an article based on GPU accelerated apps (Cuda vs Stream) Badaboom suffered from output quality issues something that hasn't been mentioned in this article. It's all very well a 9800GTX being able to encode HD video content in half the time if the final product is no good.

cangelini 05/18/2009 10:56 AM
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Jean,

Actually, I don't believe we've done a comparison between the two. However, I have read that comparison at other sites, and it's actually ATI's Stream app that has the quality issues. Version two of the software is on the way, and it purportedly fixes the quality issues (though it still isn't demonstrating much GPU scaling, from what I've seen thus far).

ohim 05/18/2009 11:17 AM
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cangelini :
Jean,Actually, I don't believe we've done a comparison between the two. However, I have read that comparison at other sites, and it's actually ATI's Stream app that has the quality issues. Version two of the software is on the way, and it purportedly fixes the quality issues (though it still isn't demonstrating much GPU scaling, from what I've seen thus far).

yeah but chose your words carefouly since readers could be misslead on this one :) the quality of the transcoding is related to the aplication used not to the computing technology like cuda or stream.

Anonymous 05/18/2009 11:27 AM
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Cangelini, Badaboom definitely has lower quality output compared to the newest x264 builds. I'd definitely like to take advantage of my 9600 GT, but not unless I can use it with Handbrake or some other app on my own terms (NOT BASELINE OR MAIN PROFILE.)

stlunatic 05/18/2009 1:46 PM
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randomizer 05/18/2009 2:34 PM
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SpadeM :
The 8800GS or with the new name 9600GSO goes for 60$ and delivers 96 stream processors.


The 9600GSO has 2 versions (ignoring VRAM variations), one with only 48 SPs (essentially a castrated G94, not G92).

Anonymous 05/18/2009 3:12 PM
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There is a plugin for people who do audio engineering/recording/mixing/mastering from this guy:

http://www.nilsschneider.de

It runs on CUDA, but TBH, it has not manifested itself as anything special just yet, it's more a "proof of concept". However, as someone who's been doing that kind of thing for years, any quad-core ever made is good enough for real-time audio work, so there's not much point in CUDA acceleration.

jgoette 05/18/2009 4:31 PM
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Anonymous 05/18/2009 4:38 PM
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I enjoyed the article, and just like in the dual-core versus quad core debate, there remains few applications that can fully exploit CUDA.

By the way, I have quick correction. The author writes, "...that can leverage parallelism in a way that jives with CUDA’s architecture." The correct word is "jibe" not "jive."

1raflo 05/18/2009 4:51 PM
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CUDA is mostly about hype. Nothing really else.


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