Repair with VLC Media Player: VLC has an in-built video repair feature, which can fix minor corruptions or distortions in AVCHD videos. You can repair corrupt videos using this free open source player. Play on another media player: Try to play AVCHD videos in other player such as VLC Player or Windows Media Player. Read More for More Information below source.
Source: https://www.stellarinfo.com/article/repair-AVCHD-video-file.php