Crate moq_video 

Native video capture, encoding, and publishing for Media over QUIC.

Counterpart to moq-audio for video tracks. Sits on top of moq_mux (and the hang catalog) and adds the native pieces a desktop/CLI publisher needs:

• capture describes a frame source (capture::Config) and grabs frames via libavdevice. Today that’s a webcam (avfoundation / v4l2 / dshow); screen capture would slot in here too.
• encode H.264-encodes frames and publishes them through moq_mux::codec::h264::Import, which handles catalog registration and framing. Two entry points:
  • encode::publish_capture captures a webcam and publishes it (turnkey). It encodes strictly on demand: the track and catalog are advertised up front, but the camera opens only while a subscriber is watching and is released when the last one leaves.
  • encode::Producer publishes H.264 you encoded yourself.

The decode/consume side (the mirror of moq-audio’s AudioConsumer) is not implemented yet; native subscribers can keep using moq_mux directly.

API stability

The public API is deliberately ffmpeg-free: no public type, signature, or error variant names an ffmpeg-next type. encode::Encoder takes raw RGBA bytes (not an ffmpeg frame), the camera capture/encode path stays internal, and Error::Ffmpeg carries a plain message. So a major ffmpeg-next bump is not a breaking change for consumers, and we don’t re-export ffmpeg-next. Config structs are #[non_exhaustive]: build them via default()/new() and set fields, so new options stay additive.

Modules

capture

Frame capture via libavdevice.

encode

Encode captured video and publish it as a moq H.264 track.

Enums

Error

Errors returned by moq-video.