backtop


Print 70 comment(s) - last by augiem.. on Aug 17 at 5:55 PM

New compression standard could be in commercial products as early as next year

The Moving Picture Experts Group (MPEG) met recently to issue a draft international standard of a new video compression format offering twice the performance of current standards. The new video compression format is called High Efficiency Video Coating or HEVC. The new H.265 compression codec is roughly twice as effective as the current H.264/AVC standard.
 
“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, which will have an enormous impact on the industry,” says Per Fröjdh, Manager for Visual Technology at Ericsson Research, Group Function Technology, who organized the event as Chairman of the Swedish MPEG delegation.
 
H.265 could usher in ultra high definition television with significantly more clarity than the 1080p we have today. The new compression format will also significantly reduce the bandwidth required for streaming video on mobile networks where wireless spectrum is at a premium. The format will pave the way for wireless carriers to offer more video services within the confines of their available spectrum.
 
“Video accounts for the vast majority of all data sent over networks, and that proportion is increasing: by 2015, it is predicted to account for 90 percent of all network traffic,” Fröjdh says.
 
He believes that the HEVC format discussed during the meeting in Stockholm could find its way into commercial products as early as 2013.
 
“It will take time before it’s launched for a TV service, but adoption is much quicker in the mobile area, and we’ll probably see the first services for mobile use cases next year,” Fröjdh added.

Source: Ericsson



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: Encoding times?
By Guspaz on 8/16/2012 5:16:03 PM , Rating: 2
Holy out of context quote, Batman!

He was testing one of the proposal submissions (from Samsung/BBC) for h.265, back when various organizations were submitting their proposals for what the standard should include. Not only was this not the actual h.265 spec, but the encoders for the submissions were all tuned to spend ludicrously large amounts of time doing exhaustive analysis to provide optimal image quality (and score higher in "competition").

The actual h.265 draft is a mixture of aspects from various submissions, and while it will be significantly more processor-intensive to encode than h.264, it won't be anywhere near that bad.

This is like judging the performance of x264 based on the "placebo" preset (which does exhaustive motion searches), when nobody actually uses that in practice and it's something like ten times slower. Except, instead of ten times slower, try like 10,000x slower, since they tuned every aspect of their submission for quality over performance.


RE: Encoding times?
By Sivar on 8/16/2012 6:21:07 PM , Rating: 2
You are totally correct, and I did mention this:

quote:
Note this was talking about an experimental, non-optimized, pre-h.265 encoder


As an aside I do, in fact, use x264 placebo mode and have encoded over 1,000 hours of video doing so. I only get 1 - 3% smaller file sizes, but weeks usually pass between buying and watching a video, so I prefer the 30GB or so of total disk space savings.

Also of minor technical interest is that placebo mode it doesn't actually try every possible predictor combination ("exhaustive"); it does a Hadamard–Rademacher–Walsh comparison (sum of differences between each motion vector) which has the same result but is much faster (though still slower than a dead slug stuck in frozen molasses).


"Game reviewers fought each other to write the most glowing coverage possible for the powerhouse Sony, MS systems. Reviewers flipped coins to see who would review the Nintendo Wii. The losers got stuck with the job." -- Andy Marken











botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki