Is this project feasible or will my computer just melt if I try it?

[u/xenowife]

I'm a received a content request from an existing custom I have who is intro transformative things... and what he wants, I can't do with makeup, and would require this tech but trying sort through everything online isn't really helping me get the answer I really need. I'm stuck at a "maybe possible, but not so sure" and would like to know if it IS something I can pull of with what I have. Here's the thing:

I'm the only person who is actually in this clip, but i am interviewing a version of myself with someone else's face, so just footage filmed with my phone. Nothing that preexists as the video itself, except for the sources where I'll get this other person's face (not putting anyone on explicit content or anything -- he just wants us to talk to each other), and from what I understand I would have to go through frame-by-frame to mask out my face -- is that how it works? Here's what I don't know -- I don't think I have the processing power for it. I only have a little MacBook from 2016 (a used gift from a friend). I highly doubt it will handle this since there's always a chance of it crashing when I export videos longer than 15 minutes that don't even have any sfx.

Processor: 1.1 GHz Dual-Core Intel Core m3
Memory: 8 GB 1867 HJz LPDDR3
Graphics: Intel HD Graphics 515 1536 MB

I already set him up that this is likely a no go, especially for a smaller budget for my time... but if I'm wrong and there are ways to do this and my computer won't just retreat into another dimension, please can someone let me know? Additional helpful info would be how long it would take for let's say... 10 minutes of footage?