Also because i'm new it says to give information so:

My pc:

Amd ryzen 5 2600

GTX 1050TI

Sony Vegas Pro 13

So because i live in bulgaria, i downloaded some clips from cartoon network shows, so i can put the audio that i recorded on the same thing but with the audio from bulgaria.

I recorded one clip from the amazing world of gumball and the same thing with my audio and wanted to sync them, and they synced perfectly !!

Tried second time but with another clip, and again synced perfectly.

But when i try for example i tried we bare bears to sync, and it doesn't happen.

The thing that i could sync was the gumball clips which they were:

30 FPS mine

30 FPS the other one.

Tried second time

The clip was 23.97

Mine was 30 and it synced.

But when i try we bare bears it just can't happen. the frame rates were:

23.97 the clip

mine was 30.

As you can see the case is the same here with the one up here, but they can't sync. Is like 1 second or 2 seconds delay. I tried everything.. Please help me