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Old 01-16-2008, 11:08 PM   #8
drmpeg drmpeg is offline
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Aug 2007
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Quote:
Originally Posted by scott1256ca View Post
As a followup to my post, how close are either of these codecs to "set it and forget it" when it comes to encoding a 2 hr. 1.85 movie?
Any expectations on when this will be doable with uniformly excellent results, or is that still quite a ways off? Which of the 2 codecs seems to have more room for future growth in this area?

Thanks
Creating a good multi-pass encoder is more about gathering the most useful statistics during the first pass and then applying a heuristic algorithm to those statistics that can arrive at a constant quality encode (for a particular average and peak bitrate). It's fairly codec independent (it's more of an entropy issue), although the algorithm does have to have a good idea of the codecs quality versus bitrate curve.

There's no doubt that higher average and especially peak bitrate make things easier. Both VC-1 and H.264 benefit from the higher rates available on Blu-ray.

As for future growth, there's no doubt that H.264 offers more areas to explore. MPEG-2 saw incremental gains every year over the last 12 years, and it's expected that H.264 will be very much the same.

Ron
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