If you don’t have an app that can decompress files ending with the . 7z file extension, such as WinRAR or 7Zip, you must install one before you can continue.
If you prefer, you could click Windows builds by BtbN instead, which is another Windows build of FFmpeg. There are a variety of builds available from different websites—the official FFmpeg website may add more as they become available.
Right-click the Windows/Start button and select File Explorer. Click the Downloads folder in the left panel (you may have to click This PC first to find it). Right-click ffmpeg-*-git-*full_build. 7z (the file name will vary depending on the current release). Select Extract Here and wait for the files to extract. This creates a new folder with the same name as the . 7z file.
Press Windows key + S to open the search bar. Type system variables into the search bar. Click Edit the system environment variables in the search results. Click the Environment variables button in the bottom-right area of the window.
Click the New button to open a new blank line below the bottom-most path. Type C:\ffmpeg\bin. Or, if you placed the FFmpeg folder on a different drive or in a different folder, replace this path with that location instead (remember to leave \bin at the end). Click OK. Now you’ll see the FFmpeg path and the end of the “Path” variable in the upper portion of the window.
