28th
Solution For Choppy And Lagging Video Playback In Mac Firefox
If you are experiencing choppy and lagging video playback in YouTube or any other sites with embeded video Flash player using Firefox on a Mac, I suggest you try this solution before considering switching to Safari.
- In the finder navigate: Macintosh HD> Library> Internet plug-ins.
- Move the file “QuickTime Plugin.webplugin” from that directory to another one you have created. I moved mine to “Internet plug-ins (disabled)”.
- Leave just the “QuickTime Plugin.plugin” file there unmoved.
- Restart your Firefox browser.
It worked for me. And all the in-brower quicktime videos were still working on Apple.com/trailers.
On another note, you may consider Perian for all your personal needs regarding desktop video playback using Quicktime.