At some point I plan to do a run on the 3DS virtual console rather than Gambette-emulator for more accurate inputs, and also so that I don't have to rely on emulators for every speedrun I do. However, even though I don't have a 3DS capture card, I can record the run with both audio and video using my PC's built in camera, I'll just have to rotate the video so that it's not upside down. However before I attempted this, I wanted to check with the mods to see if this would be accepted. I'm not going for a world record time, just submitting a run on the category extensions
As long as audio and video footage for the entire run are present, using this kinda of setup is allowed. Good luck!