If you record with a webcam or camcorder of mobile phone; please use the headphones, than give me your voice record without instrumental track without effects. In every case you should use the headphones and give me your voice record without instrumental track without effects. You can give me your voice record at this email address: vocaltracks@tiscali.it You'd record your voice with a possible USB audio interface, for best audio quality. You can also do a video, it's better. If you aren't able to sync audio with video give me your 2 tracks and I'll do that for you, so you don't have to worry about that. As well as tell me where are you from. Check out my settings.
Regarding the old videos you have to activate the subtitles. For Android mobile devices phones as Asus, Samsung, Huawei, Cat, Lenovo, LG, HTC:
Open the video with full screen, tap the screen and see the menu on top right.
For Apple iPhones it's the same, the only difference will be an icon in the 2nd place for that.