Open .m4s File ✯ [VERIFIED]

ffmpeg -i segment_1.m4s -f null -

import struct

Shows boxes, sizes, sample counts, decode times. open .m4s file

It does include the initial ftyp or the full moov (those are in the initialization segment, often .mp4 or .m4i ). ffmpeg -i segment_1

You’ll see one moov (from init) followed by multiple moof+mdat pairs. open .m4s file