Hi, and welcome to Apple Support Communities.
Which exact iBook model is it?
Official Download of VLC media player for Mac OS X. VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols. Devices and Mac OS X version. VLC media player requires Mac OS X 10.7.5 or later. It runs on any Mac with a 64-bit Intel processor or an Apple Silicon chip. Previous devices are supported by older releases. Note that the first generation of Intel-based Macs equipped with Core Solo or Core Duo processors is no longer supported.
You can choose from this list:
Which version of the operating system is it running now? If it's really Mac OS X 10.4.10, it could be updated to 10.4.11.
How much RAM is installed? Maximizing the iBook's RAM can help.
What kind of optical drive does it have? (CD-ROM, CD-RW, DVD, Combo, or SuperDrive?)
Some tips for optimizing YouTube viewing on an iBook:
Apple G4 Ibook Laptop
Also, I've found that Firefox sometimes works better than Safari for viewing YouTube videos.
Mac G4 Computer
Find the video you want to watch on YouTube. Then restart the computer. (This clears the RAM so that it is all available for watching the video.) Relaunch your browser, and select the video from the browser's history. Don't have any other applications running except your browser when you're attempting to watch YouTube videos.
Mac Ibook G4 Specs
Tell her good luck with it.
Ibook G4 Charger
Jun 11, 2012 10:02 AM