Are FCEUX Movies accepted for a proof?

It's better if your video can be seen easily by everyone without a specific software to download. If FCEUX Movies does, it's ok. I can't find what FCEUX Movies are, by the way.

I wouldn't accept them..with fceux you can make a spliced run using savestates while recording. I'm not accusing of course but we had some cheated runs in other games with that "technique". There Is no way to prove an offline recorded run is legit.
Sorry