Exporting video

[Elena1N]

When exporting the video, my audio is not syncing and I am unsure as to what I am doing incorrectly. I am taking a class but the answers to this question does not remedy the problem in the class chat, i.e., clearing the cache, unless I am doing that wrong, I am a total beginner and need help.

[Eko Wardoyo]

what footage format do you want to edit? .MTS?

[Elena1N]

It's an Mp4 the file is given by the instructor

[John T Smith]

MP4 is a wrapper, what is inside YOUR wrapper - Exactly what is INSIDE the video you are editing?
Report back with the codec details of your file, use the program below
Free program to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
- when you analyze your file in MediaInfo and post a screen shot in the forum, do so in TREE view
- post your information IN your message, not as an attachment that someone would have to download
.
Does your video use a Variable Frame Rate? See https://community.adobe.com/t5/Premiere-Pro/Variable-frame-rate-video-with-Premiere-Pro/td-p/4601935
If yes, use https://handbrake.fr/ open source transcoder/converter to convert to Constant Frame Rate

[Ann Bens]

It's an Mp4 the file is given by the instructor

By @Elena1N

Best is to ask your instructor.