Talk to the client, but I just created a bunch of work for mobile and it was just make HD video's, upload to youtube and done. The mobile app picks the video size that it can play best. My work flow didn't change one bit, but again talk to the client and see if they have any specific frames rates & sizes.
Johnny Cuevas, Editor
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.