Can I use back button focus to shoot video/movies with a Canon T6i?

[vic6]

I have a Canon T6i - 760D and want to start using it to record video/movies. I have my camera set up for back button focus which I use almost all the time when shooting stills. Can I use back button back button focus to record video/movies. If so what factors should I consider in making that decision, and what are the pros and cons of using back button focus for recording video/movies?

I would also appreciate any other advice on this issue. Thanks for your help

[John_]

Which button are you referring too? 

[vic6]

Thanks John

I have the * AE lock/FE lock button set up for back button focus as described in the "Back-Button Autofocus Explained" article in this link https://www.usa.canon.com/internet/portal/us/home/learn/education/topics/article/2019/february/back-...

[John_]

Your welcome Vic and I think you helped me discover something that will be very helpful which I was yet unaware of. That article was very useful too. I did take a look more closely at the Custom Functions, I have the T6i also, and did not find any way to re-assign a button or that asterisk button to start a recording. The Set button has some options but not for recording. Perhaps someone else is aware of one here. Thank you for that information though!

[kvbarkley]

You can only use BBF for movies if you focus *before* the movie. If you use it during the movie it will stop the movie, swing the mirror, focus, swing the mirror back and start the movie again.

[vic6]

Thanks kvbarkley, I'll give that a try.