Worked for me
(iPad Air, iOS 7.1.1):
Either solution below works. I prefer the first because even though it is cumbersome, the latter involves loss of all data on the device.
Did not work for me:
- Reopen the video, skip to the end of the video and let it play all the way out. (thanks to user rlmonera on the Apple Support Communities)
- Restore device to factory settings. Removes everything on the device. (pointed out by user Jefferson590 et al)
- Update to iOS 7.1 (jfaughnan)
- Sign out of Apple ID then sign back in. (Kristen240)
- In Settings, turn off "Show All Videos". Then go to the Videos app which shows expired iTunes Movie Rentals which immediately deletes itself (nathanjm)
- In Settings ?> General ?> Usage, open the ?video? app, you can then swipe to delete the data/cache. (ashleyegret)
- You can delete the streamed video by swiping left-right on the episode (mspears)
- Delete the series at the top level under Videos (Tremolux)
- Finally, as user riow pointed out, reboot (both normal and hard reset) is of no use.
Some more context. Below is my iPad's storage as reported by itself.
- Model: iPad Air / 16 GB / iOS 7.1.1.
- 12.8 GB of RAM reserved for apps & data.
- 0 bytes is available.
- Adding together all the apps' use (report available in Settings), the total is 3.6 GB ? only 28 % of the original 12.8 GB.
- So there's 9.2 GB missing ? a whopping 72 % of the storage available for use.
Using rlmonera's tip (?Reopen the video, skip to the end of the video and let it play all the way out?) on a number of purchases, I reclaimed ~4 GB. However, I have purchased quite a lot of iTunes content, and it will be extremely time consuming to repeat for all iTunes items across all devices. Especially when iOS doesn't provide any clues as to which items have cache files associated with them.
Overall, my impression is that iTunes creates tons of garbage that is extremely well hidden and nearly impossible to remove, save for full factory resets.
And I assume Apple doesn't want us to do full factory resets on all devices on a regular basis just because we are loyal iTunes customers?