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Old 28th November, 2009, 08:37 AM
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Gizmo Gizmo is offline
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Welcome to AOA! Thanks for dropping in.

You are asking an 850 MHz Duron CPU to decode a video stream in real time, and then shovel the data created by that decoding process across the PCI bus to the on-board video card using programmed I/O.

That's not a reasonable thing to do. I would expect even a modern CPU would find that to be a tall order, because of the limitations imposed by the data transport mechanism being used to the video card.

A more modern video card can perform the decoding and playback right on the card, as well as being able to do DMA transfers, meaning that the data transfer bottleneck becomes much less significant.
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