To analyze the subject, we utilize three primary investigative vectors:

Evaluating the MP4 (MPEG-4 Part 14) format for potential compression standards (H.264/HEVC).

Likely H.264 (MPEG-4 AVC) or H.265 (HEVC) depending on the "High Efficiency" settings of the source device.

The sequential index in the device's internal gallery database. 4. Technical Analysis