Want to save a little battery life while listening to your favorite video podcast on your iPhone? Or maybe you just want to cue it up to listen to when you’re at the gym working out, but don’t need to watch the video. An anonymous tipster over at our sister site, Mac OS X Hints, points out that if you access a video podcast through the Podcast section of the iPhone’s iPod application, you’ll get just the audio—if you want to watch the video as well, you have to access it through the Video section.
The same, I happened to notice, is true of music videos. You can get to them through the music listings, like Artist, Album, or Song, but you’ll just get a video still when you listen to them. In order to get the full video effect, you’ll have to go through the Video tab.
Funny, I just found out this on my 3G iPod nano a few days ago (at the least the music video part, haven't tried the podcasts). It's really smart, now the music videos can really just be a song if you're not looking at the screen.
Perfect for when you're working and want to listen to music. It saves Soooo much battery life.