I did a little experimenting. It's not good, but it worked.
First I used GoodReader's Bookmark for Video link in Safari. You'll find it and some instructions in settings in the GoodReader app under General. This allows you to go to almost any video site that serves HTML5 video and download them. At any rate, it works on the mobile youtube site. The result is an mp4 file.
However; there was no way to copy the video to the Photos app in GoodReader. So I needed another stepping stone.
First I tried the obvious. I emailed the video to myself. Because I chose a very short 1 minute clip, this worked and was not terribly long. Once the email arrived in Mail, I tapped on it and waited for the download. When the attachment was framed by a solid gray line I tapped and held to get the option to Save to Camera Roll. Once the video is in the Photos app, it's all downhill. You just select and import it like any other picture.
Unfortunately, this will not work with larger videos, so I experimented some more.
I uploaded the video to DropBox (again using that versatile GoodReader app). But DropBox did not give me an option to save the file to the Camera Roll.
So I went with my other favorite cloud service, Box.com. Again, I used GoodReader to upload the file.
{Good thing I set up all these cloud services up earlier.} Tapping the … icon you see a Save to Library option. Maybe they didn't like the usual Save to Camera Roll, or it was too long, but it did the same thing. The video was saved to the Camera Roll in Photos.
This is overly complicated and requires a fair amount of setting up, but it works.
To Summarize:
Apps required.
- GoodReader
- Box (and a free account with them)
Setup.
- Add Bookmark for Video link in Safari. See Bookmarklet FAQ for help understanding this.
- Add Box.com to Connect to Servers area in GoodReader.
Proceedure.
- Go to mobile YouTube side in Safari and navigate to video page.
- Tap the Bookmark for Video link (which you conveniently saved in your Bookmarks Bar).
- iPad switches to GoodReader and downloads video.
- Use GoodReader to upload video to Box.com
- Open Box.com app, find video, and Save to Library.
- Import video into Keynote using the same method as for photos.
Now, there may be a better, more direct app out there, but this should do in a pinch; as long as you don't have to do it a lot and the videos are not prohibitively large.