// REFERENCE
MKV/WebM signature
Signature (hex): 1A 45 DF A3 (EBML)
Matroska (.mkv) and WebM start with 1A 45 DF A3, the EBML header. They're flexible containers supporting many video, audio and subtitle tracks.
Related tools
Work with this in:
Related
mp3
MP3 signature mp4
MP4 signature avi
AVI signature wav
WAV signature flac
FLAC signature ogg
OGG signature
MP3 signature mp4
MP4 signature avi
AVI signature wav
WAV signature flac
FLAC signature ogg
OGG signature
Signatures verifiable with CyberEscudo's magic-bytes identifier. Educational content.