background video player recommendations?

[stalemate1]

I have downloaded a few music videos off YouTube and they are I'm mp4 format, can you please recommend an app that can play videos in the background with screen off or an app that can convert my videos to mp3 and music only.

 

[anon(7900571)]

I have downloaded a few music videos off YouTube and they are I'm mp4 format, can you please recommend an app that can play videos in the background with screen off or an app that can convert my videos to mp3 and music only.

this app is something different ,try metrotube , it let you download files on your phone (not on sd card as of now ) and you can lock your phone and the video will still be playable (all offline if you download the file in standard 360p/720p or full hd )