derf_

52 ms·

481.
by derf_ 12y ago
> How does webm decoded in JavaScript compare with a gif for video? Is there a subset (beyond removing all audio) that could speed thinks up? https://wiki.xiph.org/Ogv.js
482.
by derf_ 12y ago
Best from a compression perspective, perhaps. There's the minor detail of it being patent-encumbered. There's no license pool available yet, so you couldn't pay for it if you wanted to. The proposed terms of the pool that is
483.
by derf_ 12y ago
> Operating correctly, the encoder is designed to cut not just sounds that the human ear cannot hear in general (e.g. sounds above 22kHZ) but also sounds which may not be perceptible in context This. The idea is called "masking&qu
484.
by derf_ 12y ago
Really? Go read http://www.webmproject.org/license/bitstream/ and tell me what patents I am licensing. Why wouldn't MS use a similar technique for Android licensees?
485.
by derf_ 12y ago
With proper SIMD optimizations, the analysis to determine "nothing has changed" is so ridiculously fast that it's hard to compete even with direct XDamage output (or comparable things on other systems), whose data is not real
486.
by derf_ 12y ago
We've talked about making a GPLv3 release to at least open up the patents we control to all copyleft software. But there are important details to work through, and like most FLOSS projects we have more things to do than people to do
487.
by derf_ 12y ago
Something you may not know: Samsung had their own internal project to build a royalty-free codec, but they gave up because it was "too hard" (which for a large corporation usually means "costs too much"). The annual caps
488.
by derf_ 12y ago
Memory bandwidth for the lapping isn't any worse than for a deblocking filter. The difference is that it's not adaptive.
489.
by derf_ 12y ago
> I have to wonder if there isn't some NIH fear that if VP8/9 get any degree of success it would make it that much harder to switch to Daala later. As the person who A) leads the Daala project, and B) made the decision to ship
490.
by derf_ 13y ago
> One could learn the vector field at fixed points (just take some fixed points from the training set to use as anchors) and interpolate in some manner. One such interpolation that has nice properties (smooth everywhere, invertible, can
491.
by derf_ 13y ago
> Fair enough, but this will surely be implemented soon enough. Starting in < https://bugzilla.mozilla.org/show_bug.cgi?id=963922> .
492.
by derf_ 13y ago
draft-rescorla-tls-extended-random says: "A cryptographically secure PRNG [RFC4086] SHOULD be used." RFC 4086 Section 6.2: "The correct technique is to start with a strong random seed, to take cryptographically strong steps f
493.
by derf_ 13y ago
> Other companies must keep up in order to keep the talent, so the price returns to the actual value to the company. Uh, no, that is not how supply and demand works. See < http://en.wikipedia.org/wiki/Economic_surp
494.
by derf_ 13y ago
First to invent vs. first to file is largely a red herring. It sounds unfair until you figure out how the system actually works, rather than how the three-word phrase suggests it might work. First to file comes with a restriction that anyth
495.
by derf_ 13y ago
Counter-example: Coca-Cola.
496.
by derf_ 13y ago
> i assume the variable bitrate uses less cpu, or? At bitrates higher than about 64 kbps, CBR actually uses less CPU to encode than VBR. This is because the CELT layer was designed to be natively CBR (since for real-time communication yo
497.
by derf_ 13y ago
I'm not actually trying to imply that this is what PRISM does (no one has made that claim). I'm just saying that on a government scale, the cost of storing all voice calls ever made forever is not even very expensive. So let'
498.
by derf_ 13y ago
So let's estimate: http://www.telegeography.com/press/press-releases/2012/01/09... says there were 438 billion international (because that's all the NSA collects, right?) calling minutes in 201
499.
by derf_ 14y ago
Just a reminder to those who believe that royalty-free licensing _is_ an advantage, the IETF is a completely open standards body. Anyone can join the mailing lists and contribute to the decision making. The rtcweb chairs are currently plann
500.
by derf_ 14y ago
No, we expect it to remain preffed off by default.
501.
by derf_ 14y ago
The final version of libcelt is bit-for-bit compatible with Opus. Unlike SILK, there was never a "stable" version of CELT (we routinely broke the bitstream on almost every commit), so CELT development continued after the two codecs were mer
502.
by derf_ 14y ago
>If a single bug makes you liable, obviously it is unfair, etc, but that's exactly where the details of the license come into play - I am not a lawyer, so I have no idea if the terms here are reasonable or not. Speaking as one of the