This is a little bit of a gray area because it includes
intent at the time of flight. I'm not sure if it is clearer or not if you have a Part 107 cert. But I would assume that You could fly recreationally with a Part 107 and create a saleable commercial piece after the fact.
As
@Repaid1 said, 95% of my flying is recreational with no intent at the time of flight. But I would suppose if I got footage, flying recreationally, I can't see why I couldn't convert it to commercial? I think I have a case in point for an illustration.
Last month I just got out on Chicago's downtown lakefront at night to see what it looked like lit up at night and to get a feel for the area, to practice flying, to see how far I could see my drone with strobe with unobstruted view. I had zero commercial intent in mind at the time. It was just a nice practice flight in the middle of COVID when I was tired of being inside.
When I got home, I looked at the footage, and while testing the new Davinci Resolve 17 software and my new speed editor some things sort of came together. The second part of the project was purely practice with the editing software, still with no intent beyond what I could do with the footage I had. I threw the first draft of it up on the showcase section. It was ok and not bad that I could cobble a few random bits together to look halfway decent. And as I looked at it, I thought to myself " I think I have the footage to make this much better". Simultaneously, my significant other said she found some music that better suited the mood and the timing was perfect. So I did a complete reedit. I thought that *maybe* once I decide on putting up a website I might use it as promotional content, but still without any hard commercial intent both at the time of flight and the time of the first and even beginning of the second edit. But with my Part 107 cert there is no reason I couldn't be free to do that, with or without prior intent. But let's imagine that I didn't have a Part 107. I believe I'd still be within regulations because when I was flying my intent was only practice with no intent beyond to see what the city looked like and what I could do in flight. Without the Part 107 I couldn't use the footage for anything that could be remotely seen as commercial. Some folks would say that merely putting flight video on YouTube and posting it here for for the forum to see in the showcase would be crossing the line (which I think is a bit over the top, if you ask me).
It so happens that after seeing the finished video I was asked by a friend if I could modify the ending text so she could use it for a New Year's greeting card for her business. Of course I agreed. Could I have provided it for such purposes without the 107? No.