How to sync seperate Audio and Video

[Socio]

I think the question is, what movie program do I need?

Haven’t found a real step-by-step tutorial for how I do it. So I made a little video just now for what I found the easiest way (after having struggled with it too): [DaVinci Syncing Video and Audio Step by Step] Hope my ramblings are understandable it still went on for almost 8 minutes, but it’s not that much information. Tried to do it as step by step as possible, with not too much fluff, but I’m not experienced in doing tutorials so I hope it still helps.