“Squeeze is encoding the video using Xiph Theora and Ogg for the audio, and gives it an ogg. extension. Yes, the full stop is in right place!? (Strange).
I cannot play back the encoded files though… I get audio, but no picture, so I am not sure if the video is being encoded properly or not.”
If I’m not mistaken, the OGG file extension is for audio only, while OGV is used for video. This might explain why you are only getting audio.
With the use of Theora/OGG by many browsers in the HTML5 standard for video embedding, I have a feeling that we will see lots more clients wanting Theora/OGG encoding. I’ve really been helped in my understanding of HTML5 by this article: https://diveintohtml5.org/video.html, though I haven’t tried the recommendations of this section about batch Theora/OGG encoding: https://diveintohtml5.org/video.html#ffmpeg2theora