@RUMERIK

Hi

Video and sound not syncing when export is often caused by :

1. The one or more of your source videos you are editing is variable framerate - this is common with mobile phone video and some drone cameras.
   
   Download and install MediaInfo and analyse one of the clips and post the results, see this tutorial on how to setup MediaInfo and analyse a video clip for all the data required.  
   
   In the Video section of the analysis if see this:
   
   Frame rate mode                          : Variable
   
   Then the video(s) need converting to Constant framerate using a video converter such as Handbrake.
    
2. The source video files are MPG files.
   
   In the program right click the mpg file(s) on the timeline and select Create (new) frame table option.

If neither of the above apply then we need more information - computer specification, Windows version and program version, see this topic for what is required and please quote processor and graphics card make/model in full.

The MediaInfo analysis of a source video clip, if video from mobile phone has been used then analyse that video clip.

HTH

John EB
Forum Moderator