Accidentally Deleted All Downloaded Videos - Can I get them back?

[woolala]

My dad had a bunch of videos which he downloaded from Youtube (on computer) and transferred them to his Iphone3GS via Itunes.
My little brother accidentally reset the phone. What we can restore from iCloud/third-party tool are only recorded videos. We are still unable to restore any Youtube videos!
Unfortunately, dad had formatted his computer before the incident happened. So, Youtube videos stored on his computer and videos on Itunes all lost.
Dad forgot his videos' names. It might take a lot of time for him to go on Youtube and find them again. Anyone has any ideas to get those downloaded videos back? Thank you so much for your trouble!

 

[iOS Gravity]

If he synced his email account to a browser like Google Chrome, there might be a chance that the videos will be in the history. If he was signed into youtube, all the videos will show up in the history.

 

[kataran]

Ok restored phone

Wiped computer

Forgot videos

Assuming no USB key backup

Only option is if he was signed in to YouTube it would be on his channel

If not we can't help wish we could


Sent from my iPhone 5s Gold 64GB

 

[woolala]

Okay! I know there's no luck. He doesn't have a Youtube account also. But thanks everyone