Monthly Archives: May 2010

Google open-sources VP8 & choses Matroska

Today Google announced something that’s great on many levels: for the OpenSource community in general, for Matroska in particular, even for every internet user. First they’re open-sourcing the VP8 video codec they’ve acquired recently as part of the WebM project. VP8 is said to achieve similar encoding efficiency as the AVC/h.264 video codec while keeping quality on a comparable level. Not only are they open-sourcing it, they’re also making sure that you can use it any way you want without ever having to pay royalties or acquire licenses. It’s free in each and every sense of the word.

Second they’ve chosen Matroska format as the basis for the WebM file format as the native container for VP8 video tracks. WebM files are nothing but a stricter version of the Matroska container with fewer features and a fixed set of codecs — VP8 as the video codec and the well-known OpenSource audio codec Vorbis. Google and On2, creators of VP8, have worked behind the scenes with the Matroska developers (myself included) in order to create a specification that is easy to implement for everyone. The goal is to create a free standard for movie content that’s as easy to use for end-users as JPEGs or PNGs are when it comes to pictures. That’s where the limitations come from.

What’s even better is that Google has worked with the teams behind the web browsers Chrome/Chromium, Firefox and Opera. All three teams stand firmly behind the new format and have already integrated playback capabilities into preview versions of their respective browsers. As for content Google has started streaming Web Media files on YouTube with its HTML5 interface.

In a future post I’ll dive deeper into the technical differences between Matroska and WebM files. Suffice to say for now that they’re so few that adjusting existing playback software so that they can play Web Media files is done in a few hours tops. I’ve already created a build of MKVToolNix that supports Web Media files — both as input files and as output files (source code only for now for Linux/Mac/BSD users). If you want to create a Web Media file either add the command line parameter “--webm” anywhere or simply use “.webm” as the file name’s extension of your output file.

MKVToolNix v3.4.0 released

I’ve released MKVToolNix v3.4.0. This release contains several important bug fixes and a few new features. Two new translations (Russian and Ukrainian) have been added.

There are two changes for package maintainers: 1. the two new translations I’ve mentioned and 2. MKVToolNix requires the new releases of libebml v0.8.0 and libmatroska v0.9.0.

Here are the usual links to the home page, to the source code, to the Windows installer and the 7zip archive.

All binaries that I provide myself have already been uploaded.

Please see the full ChangeLog for a list of changes since the previous release, v3.3.0.

libebml v0.8.0 and libmatroska v0.9.0 released

The Matroska team has released libebml v0.8.0 and libmatroska v0.9.0. These releases mostly add new macros and API entries to make a smooth transition to libebml2 & libmatroska2 that are coded in C (with a C++ legacy layer). It also fixes a memory freeing bug that was triggered in VLC. The next MKVToolNix release will require the new versions of both libraries.

Nothing should have changed from a package maintainer’s point of view.

Binary packages for Debian, Ubuntu, Fedora Core and OpenSuSE are available at the MKVToolNix downloads page.