Great! Have to check that with my 400MHz G3 too.
During the last few days I captured Hi8 video with iMovie2 (os9) and rendered the DV-footage to H263-320x240 video which runs fine with that machine.
What are the specs of that YT video on your video?
That's the CPU bottleneck - 240P will be webm or mp4 video muxed with webm or m4a audio - if only we could get 3gp video played in browser, CPU use would be a quarter of what it is with muxed video.
Infact I've just been whizzing round m.youtube on my G3 - anything I want at 360P, I copy the url, launch a script, download and playback full screen...simply amazing for such an old machine 🙂
Ah, thanks! The holy grail of how to max-out video on PPC. I remember reading that thread earlier but I've lost track - should have bookmarked that link!