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<blockquote data-quote="NvIon" data-source="post: 505440" data-attributes="member: 97588">ATI sucks for H.264 DXVA decoding, ATI can only do L4.1, 4 reference frames max. Go over the limits and everything goes to hell, green screen, macroblocking errors, massive corruption, no hardware acceleration etc etc. Not to mention ATI randomly breaks DXVA support and post processing features with each driver release.Nvidia supports L5.1, 16 reference frames decoding since 178.24 WHQL drivers to the latest 190.62 WHQL drivers. Even out of spec encodes will be decoded properly with hardware acceleration on Nvidia GPUs with VP2/VP3 unit. G80 GPUs(8800 Ultra/GTX, 8800 GTS320/640) do not have the VP2 unit, only VP1 which is the same as Geforce 7 series and so cannot do full decoding on the GPU, only partial decoding acceleration so CPU usage reduction isn't as good as GPUs with VP2/VP3. MPC-HC's decoder only supports the full hardware acceleration mode, bitstream decoding/variable length decode(VLD) so G80 users are out of luck.So basically if you want the most compatible H.264 decoding hardware, you should get Nvidia graphic cards. The upcoming Nvidia Geforce GT 220 supports full hardware decoding for H.264, VC-1 and MPEG2 as well as 8 channel LPCM support.<img src="https://forum.team-mediaportal.com/attachment.php?attachmentid=46290&amp;stc=1&amp;d=1252143540" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

[QUOTE="NvIon, post: 505440, member: 97588"] ATI sucks for H.264 DXVA decoding, ATI can only do L4.1, 4 reference frames max. Go over the limits and everything goes to hell, green screen, macroblocking errors, massive corruption, no hardware acceleration etc etc. Not to mention ATI randomly breaks DXVA support and post processing features with each driver release. Nvidia supports L5.1, 16 reference frames decoding since 178.24 WHQL drivers to the latest 190.62 WHQL drivers. Even out of spec encodes will be decoded properly with hardware acceleration on Nvidia GPUs with VP2/VP3 unit. G80 GPUs(8800 Ultra/GTX, 8800 GTS320/640) do not have the VP2 unit, only VP1 which is the same as Geforce 7 series and so cannot do full decoding on the GPU, only partial decoding acceleration so CPU usage reduction isn't as good as GPUs with VP2/VP3. MPC-HC's decoder only supports the full hardware acceleration mode, bitstream decoding/variable length decode(VLD) so G80 users are out of luck. So basically if you want the most compatible H.264 decoding hardware, you should get Nvidia graphic cards. The upcoming Nvidia Geforce GT 220 supports full hardware decoding for H.264, VC-1 and MPEG2 as well as 8 channel LPCM support. [IMG]https://forum.team-mediaportal.com/attachment.php?attachmentid=46290&stc=1&d=1252143540[/IMG] [/QUOTE]

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