@mega-yfue/eufy-sdk / VideoFrameHeader

Interface: VideoFrameHeader

Parsed fields of a CMD_VIDEO_FRAME 22-byte header.

Properties

flags

flags: number;

Raw flag byte at 0x04.

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height

height: number;

Frame height (s16 LE @ 0x0c).

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keyframe

keyframe: boolean;

True when flag@0x04 bit0 is set: a keyframe carrying the ECIES envelope.

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payloadLength

payloadLength: number;

Length of the body THIS frame carries, from u32 LE @ 0x00 — not the length of the access unit it belongs to.

A station serves a unit larger than STATION_CHUNK_BYTES as several frames, and each one declares only its own share: measured on two models, a 70190-byte unit arrived as 64000 then 6190, and a 104451-byte keyframe as 64000 then 40451. A frame that carries a whole unit declares the whole unit, however large — a captured keyframe declares 0x3b323.

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sequence

sequence: number;

u16 LE @ 0x06 — repeated across every frame of ONE access unit, which is what makes it usable as part of a unit's identity. What it counts differs by model (one increments it per unit, another leaves it 0 for the whole stream), so it is never read as a count on its own.

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timestamp

timestamp: number;

Timestamp word (u32 LE @ 0x0e).

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width

width: number;

Frame width (s16 LE @ 0x0a).