Linked by Brooss on Tue 15th Mar 2011 23:32 UTC
Benchmarks A comment on the recent article about the Bali release of Googles WebM tools (libvpx) claimed that one of the biggest problems facing the adoption of WebM video was the slow speed of the encoder as compared to x264. This article sets out to benchmark the encoder against x264 to see if this is indeed true and if so, how significant the speed difference really is.
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What he said, except I don't believe in H264-encoding DSPs which have no battery drain. There's nothing magical about DSPs, it's just a processor on the inside, eating battery power to provide computational power. The miserable battery life of current smartphones shows well enough that hardware acceleration is no panacea as far as battery life is concerned. For that, we need computational efficiency, instead of more computational power.

You must be new to this and/or forgotten the whole H264 debacle over mobile SoC hardware decode/encode from ~ 2001, which is now repeating itself, once again.

Here, note where it says 'battery savings':

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