Mixcloud and MP4
There is no video on Mixcloud. Here is what that means.
By using this site you confirm you have the right to download the file you request.
Nothing to convert
Mixcloud is a sound platform. A show has no video track, so there is no MP4 to make — and a site offering one for a Mixcloud link is either producing a still image with audio attached, or lying.
What you want is the MP3. If you specifically need an MP4 container for a video editor, make it there from the audio plus whatever picture you intend to pair it with.
Frequently asked questions
Other sites offer MP4 for Mixcloud — how?
By wrapping the audio in a video container with a still image. It is an MP4 in name, with nothing moving in it.