Choppy video on Mac?

I have a 900MHz iBook G3, its really fast, but when I watch videos on the internet, they are choppy, but the audio is fine. the videos are loaded, but nothing is smooth. and last week, I watched a video and it was just fine. what is wrong with it? I watched 2 videos, one off the apple website (quicktime) and off of youtube (flash video).

Thanks in advance!

Choppy video on Mac?myspace tweaks

A lot of it depends on the video you're watching. Some videos are hopeless to begin with.

If you're watching the vids through your browser, clear the cache and the history.

I don't know how much RAM you have, but if you have a lot of apps running in the back ground, try shutting some off.

Choppy video on Mac?top 10 myspace myspace.com

it probably needs to be checked out. Just to make sure nothing is wrong with it and it is working properly

if not, it probly sucks anyway and its a waste.

:)
A G3 is kind of old. It might be fine for word processing and such but for streaming video, it might be a bit low. If you are watching the video in HD, that might be one reason b/c the processor cannot decode the video fast enough. Try selecting a lower resolution/quality video.