--- On Sun, 10/12/08, Lee Menningen <[EMAIL PROTECTED]> wrote:
> No, codecs are not, and cannot be, part of a graphics card.
> After all, not
> all data sent to a graphics card come from a
> compressed-video file, and not
> all video files are compressed using the same algorithm
> (codec).
In 1997, at the dawn of the DVD era for personal computers, there were several
videocards or add-on processor cards with MPEG2 decoding in hardware. Many GPU
(Graphics Processing Unit) chips still have MPEG 'acceleration' features in
them, though that may be more a function of their driver software since 2000.
After a 300Mhz Pentium II was shown to have just (barely) enough processing
power to play a DVD video with software decoding, the add-on MPEG2 decoder card
quickly faded away.
Other video codecs could be implemented in hardware, but the only one I know of
that has been is Divx, and that only in stand alone DVD players and some
DVD/VHS combos. There are quite a lot of DVD players that can play Divx encoded
video files, even in the sub $50 price range. Most of them can also play Xvid
codec, which is a free and open source reverse engineered clone of Divx.
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