Pornhub lets you download videos, but does anyone here know how to fix audio to video sync?

[Lust]

This video is really cute, but the audio lag ruins it. The audio begins before the video matches up.
Am I the only one here who prefers these more intimate videos as being more real than the bigger ones you usually see online?
There is always more of a sense of real love when I look at this amateur type videos, and I really appreciate that.

NOTE: Tried to upload the downloaded version, but the file is too large, so I will just provide the link to the original video here.
https://www.pornhub.com/view_video.php?viewkey=ph5a59a535ce2d6

 

[Lust]

I was really hoping someone might know how to edit audio and video in that first video I posted because I am not smart enough to do that sort of thing on my own.

As to the other part of my topic, about these sorts of "lower budget" porn videos, what is this communities thoughts on that? I enjoy these videos more than the ones that just feel like a movie set with perfect lighting and whatnot.

This is another example of 2 girls enjoying each others company in a way that just feels more natural to me:
https://www.pornhub.com/view_video.php?viewkey=ph5b9bf36875465

 

[Hangnail]

This video is really cute, but the audio lag ruins it. The audio begins before the video matches up.
...

This is a very messed up video. There is some weird combination of a time lag and a speed mismatch between the video and the audio. I made it somewhat better, I hope. See what you think...
http://ge.tt/4A8Fiuu2

 

[Lust]

That is a lot better than it was, thanks so much! Honestly do not think it can be any better than that, so yeah, thanks!