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Chris Wysocki
Caldwell, NJ
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Technorati is indexing me again! They had to make a code change to fix the problem with my blog getting stuck in their queue. Kudos to Eric M. and the guys at GetSatisfaction.com where they have "community powered support for Technorati".
Well, they're "sorta, kinda" indexing me anyway. It's on a 24 hour tape delay or something. So I never get picked up by Memeorandum because they pull from Technorati and Technorati has stuff I posted yesterday listed as my latest blog entry. And that's old news to Memeorandum.
Wankers.
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#VRWC Twitter feed:
Your streaming video players are about to get an upgrade.
The Moving Picture Experts Group (MPEG) has produced a draft standard for a new video-compression format that delivers the same video quality in half the bandwidth of the current H.264 standard.
The draft, High Efficiency Video Coding (HEVC also known as H.265 and MPEG-H Part 2), announced today, agreed on at an MPEG meeting in Stockholm in July attended by 450 delegates from the telecoms, computer, TV and consumer electronics industries convened to approve and issue the new standard.
Believe me when say this is a Big Effing Deal.
The chair of the Swedish delegation and organiser of the meeting, Per Frvjdh, manager for visual technology at Ericsson Research, said the outcome would have "an enormous impact on the industry."
"There's a lot of industry interest in this because it means you can halve the bit rate and still achieve the same visual quality, or double the number of television channels with the same bandwidth," he said.
"The availability of a new compression format to reduce bandwidth, particularly in mobile networks where spectrum is expensive [and] paves the way for service providers to launch more video services with the currently available spectrum."
MPEG-H products should hit mobile networks sometime next year. Cable and satellite providers will take longer to adopt it, but the allure of such significant bandwidth savings should be very hard to resist.
Oh, and the next time your kid asks you why she should study math, tell her this is why. These video compression algorithms are 100% math. Really cool math, designed for incredibly powerful computer chips.
Like MPEG-2 and -4, H.265 builds on its predecessors. Some improvements include larger block structures with flexible mechanisms of sub-partitioning. In the draft specification, the traditional MPEG macroblock structure is replaced with variable-block-sized coding units, (CUs) which define the sub-partitioning of a picture into rectangular regions. Each CU in turn contains one or more variable-block-sized prediction units (PUs) and transform units (TUs). Each TU is processed by performing a spatial block transform, and quantizing the resulting transform coefficients. Within the prediction loop, an adaptive loop filter (ALF) is applied, then the frame is copied into a reference decoded picture buffer, a process that improves both objective and subjective picture quality. As in H.264, context-adaptive entropy coding schemes are used.
You know, I actually understand most of that. Conceptually anyway. But things
sure have come a long way from the linear algebra I learned. And that's why
this stuff is so cool.
Posted at 19:09 by Chris Wysocki
[/tech]
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