The all new TV app is great for watching movies or TV shows. It has replaced the erstwhile Video app in iOS 10.2 in the United States. Unfortunately, TV app doesn't seem to be working well with the ripped videos or the content which has been ripped from DVDs.
While some users are saying they can't watch ripped videos, others are reporting that iTunes no longer syncs movies or videos to their iOS device. “iTunes can't sync movies or videos to your iPhone because Videos app is not installed. You must download Videos app from App Store in order to sync movies or videos.”
Have you run into the same issue, here are some viable solutions which may help you troubleshoot it.
Unable to Watch Ripped Videos in TV App on iOS 10.2 on Your iPhone? How to Fix
“Prior to iOS 10.2, I was able to view the video I had ripped on the Videos app in iOS. The process I used was to rip the video and then import them into iTunes. Then I synced my iPhone with iTunes and my movies were download and viewed using the Videos app.
iOS 10.2 no longer includes the Video app and the new TV app will not allow me to watch these ripped videos. Does someone have a solution or am I simply missing something?” – Apple Support.
Solution #1: Enable TV Widget in iOS 10.2 on iPhone
Some users, who had faced with this issue, were able to watch the ripped videos after enabling TV widget. They could also sync them using iTunes. (You may want to check out this complete guide to add/remove/rearrange widgets in iOS 10)
Step #1. Swipe from left to right on your Home screen to access the Lock screen. (If your device is locked, wake the screen and then press the Home button to unlock it.)
Step #2. Now, scroll down and tap on Edit button at the bottom.
Step #3. Next, you need to scroll down. Under Do Not Include section, locate TV widget. Tap on the “+” button to the of the TV widget.
Step #4. Tap on Done at the top right corner to confirm.
Solution #2: Update iTunes to the Latest Version
If iTunes is not letting you sync any new videos to your iOS device, make sure it's (iTunes) up-to-date. After you have updated iTunes, enable TV widget on your iOS device, restart both your computer and iOS device and try to sync the video again. It should work.
Solution #3: Change Media Kind from Music Video to Home Video
Changing media kind from music video to home video might get the job done for you. Once you have changed music video into home video and added them to a Movie Playlist, they should play as usual.
Solution #4: Use Third-Party Apps
I hope these solutions are able to let you fix the issue. If you know any handy solution to this annoying problem, feel free to let us know that in the comments.