[Cin] A resource for Audio-Visual Preservation using FFmpeg

I came across what seems to be a great web resource for Audio-Visual Preservation using FFmpeg cross platform. This resource is released under a CC BY 4.0 (Creative Commons) License and provided “as is” without warranty or support of any kind. Most of the content is in English, a smaller part in German only https://avpres.net/ Tutorials (under work) *  Bash Cookbook for Archivists *  FFmpeg Cookbook for Archivists Especially the latter "FFmpeg Cookbook" seems for me to be a great tutorial and reference using FFmpeg code syntax. An example: Filter image  - Pad 4:3 into 16:9 https://avpres.net/FFmpeg/4-3_16-9