battery life which watching a movie and unplugged

Which media player are you using ?

You should use VLC to watch your movies because Quicktime uses more CPU power to play the same movie file for some reason.

Here's my result playing a 3 minute music video. (H.264 file)

CPU usage:

VLC --- 15 to 20 %
Quicktime --- 30 to 48%

I hope this helps.

Macbook Pro 15.4' Mac OS X (10.4.8) Core 2 Duo 2.16 GHz

well, VLC is a popular free open-source multiple platform media player.You can download it from this link:

http://www.apple.com/downloads/macosx/video/vlcmediaplayer.html

Since VLC uses less CPU to play a movie file,it will definitely save more power for longer viewing.

Check it yourself.It is always hard for Mac users to believe a 3rd party software outperforms Apple's software in certain regards.



Macbook Pro 15.4' Mac OS X (10.4.8) Core 2 Duo 2.16 GHz

well if you are watching a movie, you are using more processing power than you would be if you were using the average app. you could try small things like turning down the brightness and volume a little

Like said, brightness of screen is very important factor. Same goes for video iPod.

You should also turn off bluetooth, airport and all useless programs.

Since the file is protected will VLC play it?