Monthly Archives: February 2010

How to create Ogg videos in Linux (with GUI)

Following up on my previous post about converting videos to Ogg Theora, there’s also an easy way for those who like a GUI.

Screenshot of the OggConvert programAlthough it’s possible to use VLC for Ogg encoding, I had problems with the audio and video being out of sync. Fortunately I found another way – enter OggConvert.

Written in Python by Tristan Brindle, there are packages for the major Linux distributions as well as a version for Windows. Not only that, it’s open source (GNU LGPL), preserves metadata when converting and is extremely easy to use:

  1. Fire up OggConvert
  2. Select the source video (or audio) file
  3. Click convert
  4. Voila! Enjoy your Ogg video

By default, the target file is saved in the same directory and with the same name as the source file but with an .ogg or .ogv extension. The default quality settings seem a bit low but should be adequate for most purposes.

When done, your Ogg video is now ready to use in your HTML5 pages:

<video src="video.ogg" width="320" autobuffer controls>
  <p>Sorry, your browser can't play this video but you can
  <a href="video.ogg">download it here</a>.</p>
</video>

How to create Ogg videos in Linux

Ogg Theora is the codec most supported by modern HTML5-capable browsers, so how can you convert your videos to it? Pretty easily, it seems.

There’s a cross-platform command-line application called ffmpeg2theora which does a good job of converting videos to Ogg Theora. Usage couldn’t be simpler:

ffmpeg2theora input.mpeg

If the audio is out of sync with the video, either try adding the –sync option or convert it to MPEG format using ffmpeg first, and then use ffmpeg2theora.

For those all-important tags (except ‘comment’) you can use parameters like so:

ffmpeg2theora input.mpeg --title "My spiffing video" --artist "Daniel" --license "http://creativecommons.org/licenses/by-nc-sa/3.0" --date "2010" --organization "Opera Software" --location "Tokyo, Japan" 

Or alternatively there’s oggz, available in the oggz-tools package in Ubuntu:

oggz-comment input.ogv TITLE="My spiffing video" ARTIST="Daniel" LICENSE="http://creativecommons.org/licenses/by-nc-sa/3.0" DATE="2010" ORGANIZATION="Opera Software" LOCATION="Tokyo, Japan" COMMENT="Best viewed on a screen" -o output.ogv

To embed your converted video in an HTML5 page, use something like this:

<video src="video.ogv" autobuffer controls>
    <p>Your browser can't display the open Ogg Theora codec but you can download it from here: <a href="video.ogv">Video</a></p>
</video>

N.B. For Mac, there’s Exom which has ‘HTML5′ as one of its output options (thanks Bruce).

UPDATE: If you’d prefer to not use the command line, there’s a GUI alternative for easy Ogg conversion.