This script uses ffmpeg to convert MKV and MP4 file format in MOV for DaVinci Resolve video editing program
sudo apt-get update
sudo apt-get install ffmpeg| { | |
| description = "C/C++ environment"; | |
| inputs = { | |
| nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable"; | |
| utils.url = "github:numtide/flake-utils"; | |
| }; | |
| outputs = { self, nixpkgs, utils, ... }@inputs: | |
| utils.lib.eachDefaultSystem ( |
Magic numbers are the first bits of a file which uniquely identify the type of file. This makes programming easier because complicated file structures need not be searched in order to identify the file type.
For example, a jpeg file starts with ffd8 ffe0 0010 4a46 4946 0001 0101 0047 ......JFIF.....G ffd8 shows that it's a JPEG file, and ffe0 identify a JFIF type structure. There is an ascii encoding of "JFIF" which comes after a length code, but that is not necessary in order to identify the file. The first 4 bytes do that uniquely.
This gives an ongoing list of file-type magic numbers.