Multimovies.ul

hexdump -C multimovies.ul | head -n 10 Look for headers like ftyp (MP4), RIFF (AVI/WAV), OggS , MKA , or plaintext strings.

ffplay -f mulaw -ar 8000 -i multimovies.ul (adjust sample rate — 8 kHz is common for μ-law) multimovies.ul

If it seems like raw video:

file multimovies.ul This checks magic bytes. Might say "data", "RIFF", "ISO Media", or "μ-law audio". hexdump -C multimovies

If it’s μ-law audio: