-The export dialog includes presets for common format & codec combinations (such as DVD, web-video,..). If in doubt use one of the presets.
+To make things worse, naming conventions for video codecs and formats are often identical (esp mpeg ones) which leads to confusion.
+All in all it is a very wide and deep field. Suffice there are different uses for different codecs and formats.
+</p>
+
+<h2>Ardour specific</h2>
+
+<p>
+Ardour supports a wide variety of video file-formats and video-codecs. More specifically, ardour itself actually does not support any video at all but delegates handling of video files to <a href="http://ffmpeg.org">ffmpeg</a> which supports over 350 different video-codecs and more than 250 file-formats.