On 04/09/2011 02:00 PM, Daniel Drake wrote: > Ben, what are your thoughts on Theora vs WebM for Record? You > mentioned at one point that Theora developers were considering > focusing on the low-power arena (being displaced by WebM on the > high-power high-res front), is that direction being taken?
Essentially, yes. The WebM encoder (libvpx) has always been much slower than libtheora because VP8 is much more computationally intensive than Theora. The libtheora devs have been working to expand this difference by adding encoder speed optimizations. The latest versions of libtheora (1.2 alphas, and maybe even more in SVN head) contain a lot of work to speed up encoding. I have recommended several times that OLPC ship 1.2-prerelease libtheora in the default build, due to the significant speed improvements. > So encoding speed is quite a big deal Indeed. I don't see WebM as being a realistic option for Record until OLPC gets WebM encoders in silicon, which will presumably be after XO-3. --Ben
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