Video codec¶
Encodings - video
ENC-06 - status: draft - video, screen-share
Video and screen-share tracks are carried as H.264; profile/level negotiation and packetization mode are not yet specified.
Video tracks MUST be H.264. The engine exposes an H.26x
passthrough/packetizer path (wa_h26x_passthrough, h26x_packetizer)
operating on H.264 NAL units.
TODO: H.264 profile/level negotiation, packetization mode, and how a screen-content track is distinguished from a camera track.
Notes. Engine ships screen-content and luma-histogram detectors alongside the H.264 NAL handling (likely inputs to screen-content track distinction).
Breakdown: video-packetization
Implemented by
| Flavor | Status | Source | Notes |
|---|---|---|---|
whatsapp-rust |
unknown | — | — |
Annotation wacrg:ENC-06 — a flavor marks its implementation site in source with this comment; a script clones the source, finds it, and attaches the commit blame/permalink.
Contributors
| Contributor | Role |
|---|---|
 Rajeh Taher |
wrote initial spec |
protocol history / diff - blame
Open questions - H.264 profile/level negotiation and packetization mode. - Whether other video codecs are supported.
Changelog¶
- 2026-06-21 — Initial spec entry.