ok so I wanted so show a friend the new Lady Gaga video on my evo (yea I know, I'm cool) However I noticed it wasn't available for mobile playback as well as a number of other videos. Here is a very simple solution.
Step 1
You need firefox (if your still on ie, you should switch to firefox anyway)
Step 2
Install Easy YouTube Video Downloader
HERE
Step 3
Once installed, load up your favorite music on youtube such as Alejandro!
Sttep 4
You will now see a new set of links below the video as shown below
Step 5
Click MP4 and it will instantly start downloading without doing anything else. I have tried the other formats and have found mp4 to be the best for the evo.
Step 6
Once the video is down downloading, locate the file, connect your evo with data cable, make sure to select disk drive on the screen, open up the removable drive from my computer, make a folder called Videos, drag the file you downloaded to the folder, close the window and disconnect the cable.
Step 7
Open up your Videos folder under All Aps, you will now see the video there with a thumbnail and you can now play it offline.
Conclusion
The only reason I did this was because some of the videos I couldn't play back via the YouTube app, but it is nice to have them saved so your not using data not that it really matters but will save on battery and loads instantly. I also tried 720P and couldn't get it to play on the evo but I think the MP4 format looks just fine on the evo (depending on the source of course) and it also doesn't take up very much room. Best part it it's VERY FAST to do this, no re-encoding or doing all this other crap to get it to play. It's plug and play
enjoy