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Tutorial: How To Improve YouTube Playback on iBook G3 (Dual USB)

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This is a brief tutorial on how to improve YouTube video playback on an Apple iBook G3. As of now, I have only tested this method on my own iBook. iBook's with lower specs than the 900 MHz model may not receive the same performance upgrade from this brief tutorial. With that said, here is what you can do to attempt to make YouTube more functional on your iBook G3.

1) If the iBook is running Mac OS X 10.4 (Tiger), disable Dashboard and Spotlight:

While widgets are fun and Spotlight is a useful quick search tool, they are known resource consumers that make video playback problematic for older Mac laptops, such as the iBook G3. To accomplish this, you will have to use the Terminal. Once the Terminal is open, enter the following command

{color:purple} defaults write com.apple.dashboard mcx-disabled -boolean YES{color}

After entering this command, you will then need to restart the Dock (Dashboard is owned by the Dock). To do so, again, using the Terminal, you will enter the following command.

{color:purple} killall Dock{color}

You may still see the Dashboard icon in the Dock, but clicking on it should do nothing.

For the next part, you will use the Terminal to disable Spotlight. Open the Terminal and enter the following command.

{color:purple} sudo nano /etc/hostconfig{color}

This will bring up a configuration listing. Use the arrow keys to scroll down and change the value, SPOTLIGHT=-YES-, to SPOTLIGHT=-NO-.

From here, you should press Ctrl+X to exit, upon which it will ask if you want to save. Follow the on screen prompts to save, and exit out of the Terminal. Spotlight will still appear in the corner of your screen, but it won't search for anything. Now on to the next step.

2) For any video URL on YouTube, add &fmt=5 to the end of the URL, and this will force videos to run in quarter VGA mode (320x240). The video quality will be degraded, but you should maintain a stable frame rate that is uninterrupted and capable of streaming without the need to pause and wait for the entire video to load.

This method has worked for me for old and new videos alike. Unfortunately, I have not found a way to make iTunes/Quicktime force videos into a low resolution mode, so this fix will only resolve video playback involving YouTube.




*To restore functionality to Dashboard and Spotlight:*

1) How to Restore the Dashboard

Open the terminal and input the following command

{color:purple}defaults write com.apple.dashboard mcx-disabled -boolean NO {color}

After entering this command, you will have to restart the Dock. To do so, enter the following command into the terminal

{color:purple}killall Dock{color}

Now, can drag the Dashboard icon back to the Dock, or if you did not remove it to begin with, it should function once again.

2) How to restore Spotlight

Open the terminal and enter the following command

{color:purple}sudo nano /etc/hostconfig{color}

This will open up a config file. Scroll down (using the arrow keys) to the portion that says SPOTLIGHT=-NO- and change the value so that it says SPOTLIGHT=-YES-

Exit the config file by pressing Ctrl+X. Follow the onscreen prompts to save the config file, and you are allset.


Best of luck to you all. I hope that this tutorial has been helpful.


This is the 2nd version of this tip. It was submitted on May 19, 2010 by Macology, with thanks to Ronda Wilson.
Do you want to provide feedback on this User Contributed Tip or contribute your own? If you have achieved Level 2 status, visit the User Tips Library Contributions forum for more information.

iBook G3, Mac OS X (10.4.11), 640MB SDRAM, 900MHZ G3 Power PC

Posted on May 19, 2010 8:59 PM

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Tutorial: How To Improve YouTube Playback on iBook G3 (Dual USB)

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