StreamFab

With a built-in browser, StreamFab can download videos from the internet to your devices, saving your videos as MP4 formats at a fast speed.
For quality, it ensures you download videos in a high-quality resolution of 1080p full HD. Instead, you can also prefer a resolution of 720p HD or 480p SD, depending upon your device's storage capacity.
It also enables you to download audio tracks in AAC 2.0 for unwatchable sound clarity. So customize your downloads entirely your way.