To download YouTube video, this is the feeware used to download YouTube videos free. And if you want to convert the file formats, maybe a video converter is needed.  

Hi, try this video converter that can easily and quickly convert and edit videos: http://www.tenorshare.com/products/iphone-data-recovery-win.html 

You can make your question more clear if you want satisfactory answers. 

Is it the interface with a cable pointing to iTunes? If yes, your iPhone is stuck in recovery mode. To exit iPhone recovery mode, you have  more than one method, but the best and easiest one is trying the free and safe iPhone, iPad, iPod reboot tool - ReiBoot.  No need of iTunes and you also don't need to hold "Home" or "Lock" button of your iPhone.

You can try this free tool to get out of iPhone stuck screen. It is called ReiBoot and ever helped me to exit iPhone recovery mode after iOS 7 update. Hope it helps you as well.

No matter where is your data on, iPhone device or SIM, you can recover the lost data using iPhone data recovery software. There are many iPhone data recovery tool online. You can get one, only less than $70, you can get your data back seamlessly.

If you have no idea on any such software, here i cam recommend one for you: Tenorshare iPhone data recovery. Have a try if needed.