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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?
 
TenFourTube's low res option is 240p. Default is 360p. Too bad QuickTime 7.7 wasn't available for tiger or it'd be better.

Cheers

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 :)
Ha, how is it you do that magic? I mean the part after copying the url ...
 
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