rbultje

9 ms·

61.
by rbultje 8y ago
As sad as this story is, the silver lining is that patents expire, and 20 years from the patent filing point (probably 5-10 years from now?), patients will be able to be affordably cured. It sucks but is better than nothing.
62.
by rbultje 8y ago
Bitrate reduction for the same quality. So a file of identical quality - in some metric - will be 20% smaller (e.g. 8 MB instead of 10 MB for a video).
63.
by rbultje 8y ago
The concern is typically from developers (the copyright owners), not end users.
64.
by rbultje 8y ago
Yes. For intrinsics, the compiler chooses whether and when to spill variables to the stack. For hand-written assembly, you are explicitly burdened with this yourself, usually causing you to optimize the flow of the function so it minimizes
65.
by rbultje 8y ago
in C-vs-C comparisons on the 1 test file given, dav1d was 60% faster than libaom v1.0.0. But indeed, most of this is not yet very interesting, it looks like current git/master libaom has a good amount of SIMD, and in most user testing,
66.
by rbultje 8y ago
It's not related. Companies like Youtube and Google don't do real-time encoding of their video streams, they encode "offline" (= prior) and stream the already-encoded video many times. So real-time'ness of video cod
67.
by rbultje 8y ago
> The public benefit of a patent is that the information is public [..] > The cost to the public of patents are that such use must be deferred But who does this benefit? The author points out that it benefits big/old ("stagn
68.
by rbultje 8y ago
It (sadly) has nothing to do with the device, this is (again, sadly) called marketing.
69.
by rbultje 9y ago
Compression and VQ [=video quality] vs. bitrate are the same thing; it's not about creating small files, but rather small files _which still look great_. IMO the focus of the companies you mention is simply different. Elemental (throug
70.
by rbultje 9y ago
Don't forget that switching insulin is not easy. You have to adjust and refine the amounts you take for several days or even weeks, while closely monitoring your blood sugar during that period. It's stressful and unpleasant. Here,
71.
by rbultje 9y ago
“I don’t think it takes a cynic such as myself to see most of these drugs are being developed to preserve patent protection,” said David Nathan, a Harvard Medical School professor. “The truth is they are marginally different, and the clinic
72.
by rbultje 9y ago
> however it's really hard to argue that Apple, Microsoft, or indeed IBM or Disney ever killed the geese that lay the golden eggs. In this context, you're not talking about the geese, but about the eggs. For example, for Apple,
73.
AVX-512, what’s useful for us(obe.tv)
93 points by rbultje 9y ago|48 comments
74.
by rbultje 9y ago
Two Orioles | Video Compression Engineer | New York, NY | Full-time, on-site At Two Orioles, we're building a team of video compression experts to create the highest-quality video compression algorithms and deliver this to some of the
75.
by rbultje 9y ago
We'll give you a bonus points if you can whiteboard it in front of a room full of strangers asking suspicious questions :)
76.
by rbultje 9y ago
Two Orioles | Video Compression Engineer | New York, NY | Full-time, on-site At Two Orioles, we're building a team of video compression experts to create the highest-quality video compression algorithms and deliver this to some of the
77.
Writing x86 SIMD using x86inc.asm(blogs.gnome.org)
14 points by rbultje 9y ago|1 comments
78.
by rbultje 10y ago
Two Orioles | Video Codec Engineer | New York, NY | Full-time, on-site At Two Orioles, we're building a team of video compression pioneers to shape the future of online video streaming, working with some of the biggest video streaming
79.
by rbultje 10y ago
Two Orioles | Video Software Engineer | New York, NY | Full-time, on-site At Two Orioles, we're building a team of video compression pioneers to shape the future of online video streaming, working with some of the biggest video streami
80.
by rbultje 10y ago
Two Orioles | Video Software Engineer | New York, NY | Full-time, on-site At Two Orioles, we're building a team of video compression pioneers to shape the future of online video streaming, working with some of the biggest video streami
81.
by rbultje 10y ago
It depends on speed at which you're using the encoder. At faster speeds, you'll lose some compression performance. Libvpx is still ahead compared to x264 at higher speeds, but not by as much as at their top quality (slowest speed)
82.
Overview of the VP9 video codec(blogs.gnome.org)
9 points by rbultje 10y ago|2 comments
83.
Netflix releases VMAF video quality metric(techblog.netflix.com)
2 points by rbultje 10y ago|0 comments
84.
by rbultje 10y ago
CRF: x264 --preset=veryslow --tune=psnr --quiet --demuxer=y4m --no-progress --threads=1 --profile=high -o $output.264 $input.y4m --crf=X VBR: x264 --preset=veryslow --tune=psnr --quiet --demuxer=y4m --no-progress --threads=1 --profile=high
85.
by rbultje 10y ago
A few reasons: (1) x264 is better optimized for metrics, especially PSNR. Example: removing --tune=psnr gives x264 a 12% decrease in its PSNR score in this test set (!); (2) the resolution here is only 360p, and as resolution goes down, so