AMD APU - Kaveri

A new videocodec: h265/hevc

Kaveri will support h265/hevc as well. The new video codec is up and coming thanks to the rapid adoption of Ultra HD and thus the sheer need to preserve costly bandwith. Initially we heard that this will be software support rendered over the shader engine ony. High Efficiency Video Coding (HEVC) is a video compression format and will be a successor to H.264/MPEG-4 AVC (Advanced Video Coding). HEVC is to double the data compression ratio compared to H.264/MPEG-4 AVC at the same level of video quality. It can alternatively be used to provide substantially improved video quality at the same bit rate. It can support 8K UHD and resolutions up to 8192x4320.

Kaveri's video accelerators are both updated versions of the ones featured in Trinity and Richland. The UVD 4 video decoder block hasn't changed much, but AMD says it has improved error resiliency, so videos will continue playing even when the decoder encounters errors in their source files. The VCE 2 encoder block adds support for the YUV444 color format, specifically in order to provide better text quality when using 60GHz wireless displays. H.265/HEVC isn't supported in VCE 2. AMD is instead talking about using GPU acceleration via OpenCL to assist with the playback of 4K video content encoded in this fashion.

Oh, and one big-ticket checkbox item has been marked: at last, AMD's latest APU supports PCI Express 3.0 connectivity for off-chip I/O. This addition could pay dividends in several cases, especially when the APU is paired with a couple of discrete graphics cards in a multi-GPU team.

D3m je 13. feb 2014 ob 12:34 izjavil:

http://www.guru3d.com/articles_pages/am...

A new videocodec: h265/hevc

Kaveri will support h265/hevc as well. The new video codec is up and coming thanks to the rapid adoption of Ultra HD and thus the sheer need to preserve costly bandwith. Initially we heard that this will be software support rendered over the shader engine ony. High Efficiency Video Coding (HEVC) is a video compression format and will be a successor to H.264/MPEG-4 AVC (Advanced Video Coding). HEVC is to double the data compression ratio compared to H.264/MPEG-4 AVC at the same level of video quality. It can alternatively be used to provide substantially improved video quality at the same bit rate. It can support 8K UHD and resolutions up to 8192x4320.

http://techreport.com/review/25908/amd-...

Kaveri's video accelerators are both updated versions of the ones featured in Trinity and Richland. The UVD 4 video decoder block hasn't changed much, but AMD says it has improved error resiliency, so videos will continue playing even when the decoder encounters errors in their source files. The VCE 2 encoder block adds support for the YUV444 color format, specifically in order to provide better text quality when using 60GHz wireless displays. H.265/HEVC isn't supported in VCE 2. AMD is instead talking about using GPU acceleration via OpenCL to assist with the playback of 4K video content encoded in this fashion.

Oh, and one big-ticket checkbox item has been marked: at last, AMD's latest APU supports PCI Express 3.0 connectivity for off-chip I/O. This addition could pay dividends in several cases, especially when the APU is paired with a couple of discrete graphics cards in a multi-GPU team.

klkkkkkkkkkk je 13. feb 2014 ob 12:36 izjavil:

D3m
brez veze hojniku razlagat - ker mu je vse jasno

Ni nujno potrebno, da rabiš za 4K točno določen decoder - kakor smo rekli ima h.265

Vseeno me pa zanima od kakšnega userja mnenje

Edit: A ni AMD ravno to naredil z kaverijem, da lahko "prebavi" 4k VIDEO

m0LN4r je 13. feb 2014 ob 10:28 izjavil:

Kako pa je KAVERI z 4K predvajanjem?

Zato, ker mlajši brat Richland (moj 6800K) žal ne prebavi 2160p na youtube.

Glede govoric o tem, da preko HDMI podpira 4K, kar ne pomeni avtomatično, da bo na Youtube pognal 4K. Na FM2 embalaži tut piše 4K over HDMI pa mi zdaj prav nič ne koristi.
CPU za nad 100€ bi moral bit zmožen tega se mi zdi.

klkkkkkkkkkk je 13. feb 2014 ob 12:57 izjavil:

Čeprav razumem je AMD mislil predvajati 4K video z HSA?

m0LN4r je 13. feb 2014 ob 13:24 izjavil:

CPU 50% Average, ampak dela normalno

Youtube 4K je pa negledljiv in CPU usage je nad 90%

AMD APU za 140€ torej za relativno/isto (mal več) ceno bi dobil najslabši i5 in imel superduper HTPC in futureproof.

ne bi pa mogel iger na fhd igrat

klkkkkkkkkkk je 13. feb 2014 ob 16:11 izjavil:

hojnikb
mogoče sem res premalo napisal...
Hoptel sme povedati, da lahko preko HSA izdajo boljši dekoder, to seveda ni bilo namenjen na kaverija, ampak na "future"...

hojnikb je 13. feb 2014 ob 16:08 izjavil:

Še vedno ti ni jasn koncept strojnih dekoderjov.
Seveda se da 4k h.264 implementirat v opencl/hsa, sam nebo stvar tako dobra kot hardware dekoder ..
kapiš ?

Zato so strojni dekoderji smiselni, ker imajo minimalno porabo in porabijo praktično nič die placa..