: To view the contents, you would typically need: 7-Zip or WinRAR : To extract the files.

: Use the "Open Archive" feature in 7-Zip to look at the file list before fully extracting to ensure there are no suspicious executable files. mkv files or explain how to verify the file's hash ?

: The .7z format uses LZMA/LZMA2 compression, which is standard for large video archives to reduce file size significantly without losing quality.