Hello, I have a problem with my audio track, the video was recorded in gopro. I downloaded the file to a folder, listened and everything was fine, the sound worked, then I uploaded the video to Sony Vegas and the audio track breaks, I would compare it to noise, I put it into audacity and it’s exactly the same. Please help what to do? 
https://prnt.sc/r67xtz
What app did you use to listen to the file?
Test the file on this webpage to see what the full format is: https://mediaarea.net/MediaInfoOnline
Format - MPEG-4
Format Profile - Base Media / Version 1
What is the full file name (including the file extension)?
I don’t know if I understood correctly, full name : GH010225.MP4
Look:
General
Complete name : GH010225.MP4
Format : MPEG-4
Format profile : Base Media / Version 1
What app did you play the file with that sounded “fine”?
How did you do that? Did you “Import” it via Audacity’s “File” menu?
Do you have FFmpeg for Audacity installed?