The clip is slowed down when i place it on the timeline ?

Hello everybody! This situation is driving me crazy. I got a video, and when i dragged it into the timeline, it gets pitched down and also i think slowed down because its impossible to match with the audio. I got a bunch of videos filmed with different cameras, and this only happens with a gopro, not with the others. What could it be? I attach a video for the purpose of a better understanding. Thank you!

Don't see the video. You'll have to link it to a YouTube or Vimeo, not attach it.

What is the frame rate and codec of the GoPro clip?
What is the frame rate of your timeline?