iTunes is a champion of music, video downloading services. The user-friendly iTunes makes downloading music, videos quick and hassle-free; however, iTunes purchased songs and videos will not run on any other media player except for Apple products due to digital rights managements (DRM,) which limit usages of devices or files.
This is a tutorial to remove DRM protection from iTunes. Then you can burn the iTunes videos to DVD and convert the iTunes videos to other format files.

Part 1, Remove DRM protection from iTunes Music using iTunes + CD-R/W
Probably the most widely accepted method for stripping purchased songs of DRM protection is burning tracks to a CD-R/W then re-importing back into the iTunes library. A method guaranteed to free you of DRM madness.
Create an iTunes playlist containing your purchased songs.
Insert a blank CD-R or a CD-RW.
Burn the playlist to disk.
Re-import the songs after a successful burn.
Delete the original purchased tracks.

Part 2, Remove DRM protection from iTunes using software
1. Remove DRM protection from iTunes music and videos for free on PC.

QTFairUse. It can Remove DRM protection from iTunes music and videos for free.

QTFairUse(.) for ITunes will allow you to convert protected m4p format files purchased in the iTunes Music Store to unprotected m4a files, playable everywhere. It supports fully automated conversion of all protected tracks in your iTunes library.
It will confirm whether you want to convert all the files in your library. Press 'y' and Enter to do that. Next it will ask if you want to skip already converted tracks (e.g. from the previuos run). Press 'n' and Enter to owerwrite them, 'y' and Enter to skip. After that, the script will begin conversion of all files in the library. Converted files will have m4a extension and will reside next to their m4p counterparts. To stop the conversion in process, press Ctrl-C in the console window. You can also close iTunes.
If you want to convert specific m4p files, pass their filenames as the commandline parameter. You can do that by e.g. dragging and dropping the files on QTFairUse6.exe. QTFairUse6 will convert them and exit. You can find converted files next to the originals, with m4a extension.

MyFairTunes. It can Remove DRM protection from iTunes music for free.
remove drm


2. Remove DRM protection from iTunes music and videos on Mac.

The software I introduce:
FairGame It is a freeware to Remove DRM protection from iTunes music on Mac OS X.
FairGame(http://seidai.50webs.com/Seidai%20Software_files/FairGame.zip)will convert the songs you bought on the iTunes Store to an unprotected format (using iTunes default encoder) and keep all the original metadata, lyrics and artwork. FairGame doesn't do lossless DRM stripping. It re-encodes protected AAC files purchased in iTMS into unprotected AAC file using Apple's iMovie software.
What you MUST DO (only once) to get FairGame to work:
enable "Access for assistive devices" in the "Universal Access" system preference
select "Place clip in Movie Timeline" in the "Import" preference of iMovie HD
Then you can simply:
select some songs in iTunes
click on the "Process songs" button
then don't touch anything and wait until it's done...(FairGame is scripting iMovie's interface to process the songs, don't interfere)


DRMdumpster. It is a shareware to Remove DRM protection from iTunes music and videos on Mac OS X.

I did not find freeware that can remove DRM protection from iTunes videos on Mac. So I recommend a shareware to help you to remove DRM protection from iTunes videos on Mac-- DRMdumpster
DRM Dumpster is the legal way to convert DRM tracks your iTunes music library to standard files. DRM Dumpster uses a CD-RW and iTunes itself to convert all of your DRM music files to standard format files (MP3, AAC, Apple Lossless, AIFF, WAV) that you can use with any music player.