Users have been experiencing issues with syncing their movies with the iPhone and the iPod Touch (as well as other video-enabled iPods).
Apple Support Discussions user dpman:
"I have an MP4 movie on my computer, but I cannot transfer it to my iPhone. It is in iTunes movies, but it won't transfer..."
ASD user abellan offers this Apple KB article:
Apple KB Article HT1211
Also recommended from the Apple KB articles:
Apple KB Article TS1497
Check your file type:
Apple Support notes the following--
"HD content cannot be synced to an iPod. When trying to sync HD content to your device, you will see a prompt like the one above stating that the file was not copied to your iPod because it cannot be played on your iPod."
ASD user Leslie91 offers this workaround:"I change the .mp4 extension to .m4v and then I have no trouble transferring those videos to my iPhone."
There are also several programs, both freeware and for purchase, available that do video conversion for iPhone/iPod (see: DVD Video Soft, Handbrake, or just do a search on Google for converting videos to iPhone format).
ResourcesApple Support Discussions thread regarding issues with movie syncing: View the thread
For FAQs regarding transferring videos:Apple KB Article HT2729
Experiencing problems? Have feedback? Let us know!Resources