Note: this will work for all video formats, not just mkv/mp4/avi – they’re just common formats (and the 3 that I’ve found most often have sync issues). If you aren’t using VLC yet, head over to their download page and give it an install. The quick solution is to use the amazing (and free) media player – VLC, and its easy to use built in audio delay/forward feature. Temporarily Fix Out of Sync Audio and Video There are two ways to fix out of sync audio and video – one is temporary and quick, the other is permanent and a bit more involved, although still quite easy. This step by step guide will show you how to fix out of sync audio and video in a video file.
