Never run any .exe or .bat files that might be included in the folder; a video file should only be a media format like .mkv , .mp4 , or .avi .
Highly recommended for its ability to play almost any file format without extra codec packs. MPC-HC (Media Player Classic): A lightweight alternative. Never run any
Always run an antivirus scan on files downloaded from third-party sources before opening them. Never run any