The encoding proposed by that blog post matches the encoding used in MKV container, see section #4 “Variable-Size Integer” in that specification: https://www.rf

The encoding proposed by that blog post matches the encoding used in MKV container, see section #4 “Variable-Size Integer” in that specification: https://www.rfc-editor.org/rfc/rfc8794.html https://www.rfc-editor.org/rfc/rfc8794.html All modern CPUs have instruction to swap order of bytes in the integers to big endian. And many programming languages have an intrinsic function to emit these instructions. Quite useful for both encoder and decoder of these integers.