This maybe a good idea for you to learn Japanese, but it may be a hard task for the translator, even 5 mints clip to make, need to stop a video so many times to take time to write these words down, takes so long like half an hour or more.

I recommend you to ask these helps to the teachers, or you can ask someone to help with this and also you offer the same help to them, which may work for both. 

この作業はとても時間がかかりますので、

先生にお支払いをしてお願いをするか、あるいは、同じようにその方のビデオクリップを英語で作って差し上げるなど、

双方で助け合わないと、なかなかできないこととは思います。

This is a strange request. But were you wondering whether two or three people could help me with the movie I would like to see? The movie has Japanese audio and Japanese subtitles, but subtitles do not match audio (I can not find audio online). I want to send one or two audio clips every other day and want someone to translate them. That way, I can get used to training and train. At this rate, I will finish the movie within a year, but I do not mind.