/fragmented.mp4: > fq -d mp4 'mp4_path(".moov.trak[1]")' /fragmented.mp4 |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f| |.boxes[1].boxes[2]: {} 0x280| 00 00 01 bf | .... | size: 447 0x280| 74 72 61 6b | trak | type: "trak" (Container for an individual track or stream) 0x280| 00 00 00 5c| ...\| boxes: [2] 0x290|74 6b 68 64 00 00 00 03 00 00 00 00 00 00 00 00|tkhd............| * |until 0x442.7 (439) | | > fq -d mp4 'mp4_path(mp4_path(".moov.trak[1]"))' /fragmented.mp4 ".moov.trak[1]"