ffprobe or avprobe not found. Please install one

Make sure you have the last version for youtube-dl

sudo youtube-dl -U

after that you can solve this problem by installing the missing ffmpeg on ubuntu and debian:

sudo apt-get install ffmpeg

and macOS use the command:

brew install ffmpeg

I know the user asked this for Linux, but I had this issue in Windows (10 64bits) and found little information, so this is how I solved it:

• Download LIBAV, I used libav-11.3-win64.7z. Just copy "avprobe.exe" and all DLLs from "/win64/usr/bin" to where "youtube-dl.exe" is.

In case LIBAV does not help, try with FFMPEG, copying the contents of the "bin" folder to where "youtube-dl.exe" is. That did not help me, but others said it did, so it may worth a try.

Hope this helps someone having the issue in Windows.

brew install ffmpeg will install what you need and all the dependencies if you are on a Mac.

On Windows, you can easily install ffmpeg via chocolatey

choco install ffmpeg