Reply 100 of 104, by gandhig
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wrote:Actually that 12% load is probably dead-on; decoding/acceleration video playback is "nothing" to a modern USM GPU (consider the floating point power of a USM GPU - decoding of a 2-4Mbit 720p stream is relatively nothing). ATi cards, if I remember right, tend not to report "video engine load" like nVidia cards will, so you're just seeing a raw average of the card's loading (especially if you're going from CCC, which only reports "GPU Load" as an averaged stat - it isn't showing the break-down between MEMIO, Shaders, etc).
But feipoa mentioned that he had seen the GPU load of 12% when playing windowed Flash videos. Invariably the windowed mode uses software rendering AFAIK, atleast with my setup. So for a stutter-free playback in old P3 systems, you need both decoding and rendering to be accelerated which doesn't seem to be the case here. This was my point actually. However I made a mistake in my previous post by mentioning 'only rendering and not decoding' whereas it should have been the reverse. Yeah you are correct in saying that the decoding of 720p stream is nothing for a modern GPU. I have seen the video engine load(HwINFO tool) never crossing 18% for 1080p(full screen) in my case. So there is a lot of juice left in the video core of my nvidia GPU to tackle Blu-ray like you said.
wrote:Depends on the stream, the source, etc. Something that isn't being mentioned at all here is that resolution != bitrate. Something else that isn't being mentioned is that not all "video decode acceleration" is created equal
Yeah I do understand the bitrate thingy and the different levels of acceleration dependent on various factors & setups, points accepted.