I have three AVI video files that I would like to merge into one file. When they are played independently, the audio is in sync for all of them. But when I combine them into one file using AVS Video Editor, the audio on two of the files goes out of sync with the video by 800 milliseconds or more.

What can I do so that the audio stays in sync for all of them as I merge them? Your help would be most appreciated.

Dear user,

We recommend you to use AVS Video Converter to merge several video files. Here is the instruction: http://onlinehelp.avs4you.com/AVS-Video-Converter/Features/merging.aspx

If the issue still persists please:

1. Send us the screenshot of Advanced / Conversion options window after you import the files to the programm;

2. Merge the two original files wich are out of sync after conversion and let us know if the issue persists;

3. Please make sure that all the files are played back correctly on the Preview

Best regards