Choosing a codec

Cracking the Code of x264 Presets

Like most compression geeks, I'm a big fan of the x264 codec, which is widely considered the highest quality H.264 codec, winning the prestigious University of Moscow codec shootout year after year. Though the codec has a comprehensive range of conf...

YouTube/VP9/4K - Get Off the Dime, MPEG-LA

When YouTube sneezes, the codec world catches the 'flu, even if the cause of the sneeze was totally innocuous. So it was with YouTube's announcement that they will show 4K video encoded with VP9 at CES with hardware partners including Sony, Intel and...

Google Starts Pushing VP9; Caution Advised

As you probably know, Googles VP9 is the successor to VP8 in WebM and a competitive technology to HEVC/H.265. I reported here that patent claims from Nokia present a red flag to potential adapters, but Google keeps pressing ahead, and lots of potenti...

What Is HEVC (H.265)?

H.265/High Efficiency Video Coding (HEVC) is the successor codec to H.264, which, like H.264, is jointly developed by the ISO/IEC Moving Picture Experts Group and ITU-T Video Coding Experts Group (VCEG). The primary goal of the new codec is 50 percent better compression efficiency than H.264 and support for resolutions up to 8192x4320.

WebM: It's Forgotten but Not Quite Gone

I recently taught several seminars on producing video for HTML5, and I started my preparation with some research to see how the WebM codec was being used to determine the focus and scope of my WebM-related materials. In case you’ve forgotten — and you wouldn’t be the only one—WebM is the open source format Google launched in 2010, built around the VP8 video codec that Google acquired in its purchase of On2 Technologies.

Power to the Patent Trolls

In April 2011, the Department of Justice began investigating the MPEG Licensing Association (MPEG LA) to learn whether or not the group is unfairly trying to damage Google's competitive prospects with the WebM video format. But maybe MPEG LA would be...

How to Encode To WebM

This is an excerpt from an article I wrote for StreamingMedia. Even if you don't believe all the hype about HTML5, sooner or later, you'll need to start encoding some video to WebM format. Maybe for internal experimentation, for a pay-per-view or ...

Interview on WebM and HTML5 at StreamingMedia West produced a number of video interviews at StreamingMedia West, including an interview with StreamingLearning Center's founding visionary, Jan Ozer (sorry, couldn't resist, writing in the third party is so freeing). As the title suggests, host Peter Cervieri and I discuss WebM, HTML5 and several other issues. Click over to the main article to see the video.

WebM vs. H.264 Bakeoff - Presentation and Handout

I just finished my H.264 vs. WebM Bakeoff presentation - you can download the PDF below.

You’ve heard the hype about VP8, but how does it really compare to H.264? This session compares quality, encoding speed, and playback requirements. It also details access to VP8 encoding from within live and on-demand encoding tools, the availability of hardware playback acceleration, and features like adaptive streaming. The session also reviews VP8 usage by YouTube and other websites.

WebM vs. H.264: A First Look

This article compares H.264 to WebM, Google's implementation of the VP8 codec, using three variables (encoding time, compressed quality, and CPU requirements) for playback on three personal computers. Here's the CliffsNotes version of the results: Using Sorenson Squeeze to produce both H.264 and WebM, the latter definitely took longer, but there are techniques that you can use to reduce the spread to less than 25%, which is pretty much irrelevant. Though H.264 offers slightly higher quality than the VP8 codec used by WebM using the aggressive (e.g., very low data rate) parameters that I tested, at normal web parameters, you couldn't tell the difference without a score card. Even compared to H.264 files produced with x264, VP8 holds its own.

Click to the main article to read the rest of the story.