AVSEQ is an uncommon video format. You cannot play an AVSEQ file with a media player since it has the “.DAT” extension, and most media players do not support the .DAT file. You could rename the AVSEQ.DAT to AVSEQ.MPG, however, some media players may not play the video file properly. If you want to play your AVSEQ file, you can convert AVSEQ to MPEG. All media players support the MPEG video format. Many video converters allow you to convert AVSEQ videos to MPEG. Writer Bio
