Videos watermarking for Instagram

[soldiguadagno]

Hello everyone, I want to watermark videos I upload on instagram using a transparent png. What way or software do you suggest to do it?
Thank you

 

[ProxyBird]

Xnconvert

 

[soldiguadagno]

Xnconvert

I downloaded it but it looks like it is only for images, what about videos?

 

[ProxyBird]

Oh my bad, I thought it also did videos. Filmora 9, have you tried that one?