R520 (Kaleidoscope?) HD Decode/Decompression Capabilities
- Thread starter Dave Baumann
- Start date
Mariner said:
HD BR/DVD playback support is a probably a little "early", but this will be be required in the future - important applications for HD decode will be MCE / HTPC's and laptops (i.e. who now plays VCD's on their laptops? Who doesn't expect a laptop to have enough battery life to play back a DVD movie at the moment?)
A lot can, a lot can't....it's a normal feature now-a-days though.Ostsol said:
Blazkowicz
Legend
Isn't H264 just MPEG4?
(I think it's what there is on PSP)
if so, is ATI keeping up with the latest offerings of the VIA C3/C5 platforms
(with MPEG4 decoding done by the CN400 chipset)
(I think it's what there is on PSP)
if so, is ATI keeping up with the latest offerings of the VIA C3/C5 platforms
(with MPEG4 decoding done by the CN400 chipset)I think Encode is more important than decode. Even bargin basement PCs today have enough horsepower to decode H.264, and many aspects of H.264 share components with MPEG-2 decoding (like DCT/IDCT), so existing cards can accelerate it to some extend.
I'm disappointed that neither NV or ATI are delivering good encoding solutions. Not only for fast home video production, but for PVR functionality, where H.264 can crunch down alot more broadcast video on your harddrive, and also for VOIP/SIP Video phone applications, where there is a need to encode video in real time.
I'm disappointed that neither NV or ATI are delivering good encoding solutions. Not only for fast home video production, but for PVR functionality, where H.264 can crunch down alot more broadcast video on your harddrive, and also for VOIP/SIP Video phone applications, where there is a need to encode video in real time.
Blazkowicz
Legend
digitalwanderer said:
I second that. I have a PC decent enough to decode 720p WMV9 (so maybe it's able to do 1080i/1080p H264), with a 17" CRT which I consider great, and the TV I personnally own is a 14"
. (actually it's an Amstrad CPC monitor with the SECAM tuner add-on).DegustatoR
Legend
Sony PSP can decode H.264 (aka MPEG4 AVC)
Depends on your viewing distance....DOGMA1138 said:normal divx is fine for small screens, i watch them too. but downloading HDvideo for such a small screen is a total waste.digitalwanderer said:I don't.DOGMA1138 said:
then get one
Me and my wife do, but they're 17" montiors.
Personally, I watch movies on a 17" wide-screen iMac from less than a meter away. If I cared a lot, I might buy something bigger and sit in a sofa with pop corn. But I don't. I'd rather go to a movie theater every now and then. Nor is my household really likely to buy a HDTV in the near future either since none of us is very interested in TV entertainment in the first place.
YMMV, obviously.
second once is the obvious choice isn't it?martrox said:Choices, choices.....
Dell 2005FPW 20" widescreen or .......
50" Samsung DLP.........OR
Infocus DLP Projector at 100".......
Just what is one to do..........
Projector must cost a helluva lot!
Realistically thinking of course.
It does share compoents. The transform is DCT-like. The fact that it is 4x4 and integer is irrelevent. The basic structure is the same. People have been implementing integer multipy-less DCT implementations for years. The fundamental transform is DCT-like and is implemented the way all such transforms are (DCT, FHT, FFT, DWT, etc) via a "butterfly" structure. If you've got flexible hardware to compute transforms, than reprogramming it to use the H.264 transform is a matter of changing coefficients and kernel size. For example, in TI's OMAP processors in cell phones, they cover an entire range of compression codecs by making their kernels and butterflys adjustable. If you're got totally fixed function hardware, you may be screwed, unless you look at academic work on transcoding which developed transforms between MPEG-2 DCT and H.264's 4x4 DCT. But I think it is a bit disingenous to say that there is nothing shared. H.264 is not a revolutionary new codec, is an extension of existing techniques.
For motion comp, it depends if your HW's kernels are programmable or not. In NVidia's case for example, the DCT and motion comp are supposed to be done via programmable built in combo scalar/vector/branch unit.
Other parts, such as deblocking, conversion, deinterlacing, are also reused. And quantization (inverse) seems to be done by the CPU for most systems today.
For motion comp, it depends if your HW's kernels are programmable or not. In NVidia's case for example, the DCT and motion comp are supposed to be done via programmable built in combo scalar/vector/branch unit.
Other parts, such as deblocking, conversion, deinterlacing, are also reused. And quantization (inverse) seems to be done by the CPU for most systems today.
trinibwoy said:Oh yeah of course. In that sort of setup this tech would be great. When somebody says they're "watching tv on a PC" what comes to mind (at least for me) is a regular desktop setup. Guess I'm a bit behind the times
Obviously
I haven't used my TV for almost a year, I watch all movies and tv episodes on a 720p projector connected with DVI-D to my 6800 with everything upconverted to 720p for my viewing pleasure.caboosemoose
Regular
Someone said that any cheapo PC has the grunt to decode H.264 files, and I have to disagree. As far as I know, it's about as CPU intensive to decode as WMV9, and I know from experience that (for instance) Athlon 64s are shite at decoding WMV9 HD content. Something like an A64 3000+ is only just capable of decoding, say, a 10Mbit 1080p WMV9 file, whereas a 3.0GHz P4 will chew it up at an average of around 50% CPU time. A 3.8GHz P4 absolutely eats WMV9 stuff for breakfast. AFAIK, it's down to the P4's superior streaming SIMD performance, which is more ckockspeed-bound than other computations. I'm expecting H.264 decode to be the same. It's also worth noting that only the very fastest 2.13GHz Pentium Ms are capable of decoding very high bitrate WMV9 stuff. So, decode support from a video card will be key, both to enable decode on notebooks and low power PCs, and to free up resources. Multi core CPUs make that less of an issue, but for me as a journalist, I'll be including an HD H.264 decoe test in my system/CPU/whatever reviews as soon as Apple release QT7 for windows, or as soon as another large player releases a quality H.264 decoder. Even if there's not much content now, for me it's very nice to know how a system or CPU handles decoding H.264. It's clearly going to the the dominant standard for HD content.
Where is this patch? I see nothing on Microsoft's MediaPlayer or their WUS sites about it...neliz said:Alstrong said:Whatever happened to WMV (HD?) acceleration? :? Does the R520 HD acceleration include that
Microsoft have finally delivered a patch for mplayer10 ... enjoy it!
