I recently started to convert all of my movies from MKV to MP4. The main reason for this is that I want to be able to play back videos from all my Apple devices without the need for additional software, like VLC or IINA.

For many people not that deep into video file formats I want to explain what the supported formats for video on macOS are and how to get there from almost any source material.

I maintain an archive of videos, especially documentaries from public media libraries from tv channels etc. on my NAS. Whilst I can use youtube-dl for the most part, it’s rather difficult for sites that use HTTP live streaming (HLS) to stream their content. In the most cases this is even AES-128 encrypted, which makes it difficult to download it. But since there’s players that support playback, it’s obviously possible to decode the stream on the client side. ffmpeg is the swiss army knife for video/audio encoding and muxing and therefore the perfect utility for downloading encrypted HLS content.