2.6 KiB
Hackathon
IETF Prague 118
MoqTransport
Reference libraries are available at moq-rs and moq-js. The Rust library is well documented but the web library, not so much.
TODO Update both to draft-01. TODO Switch any remaining forks over to extensions. ex: track_id in SUBSCRIBE
The stream mapping right now is quite rigid: stream == group == object.
TODO Support multiple objects per group. They MUST NOT use different priorities, different tracks, or out-of-order sequences.
The API and cache aren't designed to send/receive arbitrary objects over arbitrary streams as specified in the draft. I don't think it should, and it wouldn't be possible to implement in time for the hackathon anyway.
TODO Make an extension to require this stream mapping?
Generic Relay
I'm hosting a simple CDN at: relay.quic.video
The traffic is sharded based on the WebTransport path to avoid namespace collisions. Think of it like a customer ID, although it's completely unauthenticated for now. Use your username or whatever string you want: CONNECT https://relay.quic.video/alan.
TODO Currently, it performs an implicit ANNOUNCE "" when role=publisher. This means there can only be a single publisher per shard and role=both is not supported. I should have explicit ANNOUNCE messages supported before the hackathon to remove this limitation.
TODO I don't know if I will have subscribe hints fully working in time. They will be parsed but might be ignored.
CMAF Media
You can publish and watch broadcasts.
You can also use moq-pub to publish your own media if you would like.
I'm currently using a JSON catalog similar to the proposed Warp catalog.
TODO update to the proposed format.
If you want to fetch from the relay directly, the name of the broadcast is path. For example, https://quic.video/watch/bbb can be accessed at relay.quic.video/bbb. The namespace is empty and the catalog track is .catalog.
Each of the tracks uses a single object per groups. Video groups are per GoP, while audio groups are per frame. There's also an init track containing information required to initialize the decoder.
TODO Base64 encode the init track in the catalog.
TODO Add a flag for publishing LoC media? It shouldn't be difficult.
Clock
TODO Host a clock demo that sends a group per second:
GROUP: YYYY-MM-DD HH:MM
OBJECT: SS