This demo validates the video transport used by GhostSignal (a deterministic bottom-band grid channel).
It embeds and extracts a GSIG-framed payload in-browser. Higher-level protocol layers (META/layouts) are specified separately.
Video Frame
VBB profile (demo): bottom band, 8×8 px cells, 4 rows (32px). Each byte is a 2×4 cell block (MSB→LSB). 1 = white, 0 = black.
Controls
Embed: draws video + VBB band per frame and records WebM.
Extract: scans the VBB band, locates the GSIG header, and writes the decoded text into Decoded output.
Stego Scanner
Visualizes extracted bytes from the bottom band in real time.