Deeplabcut: ffmpeg no recognised when trying to edit videos

hi ,
i am using windows OS, DLC-CPU env, maDLC 2b7 version, ipython.
I am glad to say this, that the maDLC runs/analyses superbly my short test vidoes. I further wanted to crop my videos from 1280 * 720 resolution to smaller 640 * 360 using the option in GUI for editing video. i end up getting following statement in my command window.

‘ffmpeg’ is not recognized as an internal or external command,
operable program or batch file.

i checked previous posts here, and there is a wikihow page for installing ffmpeg separately on windows 10. however that link doesnt work, could you suggest a link / build which is recommended to install for usage in maDLC.

thank you very much