See the session in DevTools
Watch subscriptions and objects as they happen, with MSF and CMSF catalogs, LOC and CMAF objects, timelines, JSON and CBOR decoded.
See the session in DevToolsDebug and monitor MoQ, end to end.
moqtap · outlined boxes are your stack
Intercept and break any connection
See every message between your app and the relay, then break the network on cue: loss, jitter, outages, dropped keyframes, the same every run.
Intercept and break any connectionWatch real publishers and viewers
See what each release did to playback, compare relays, and tell whether a stall came from the player, the relay or the publisher.
Check what a relay really supports
Every public MoQ relay, tested on each draft, with spec violations quoted.
27 public relays, nightly
Find MoQ software to build with
Libraries, relays, players and publishers, with the drafts and formats each one supports.
38 libraries, relays, players
What you get with each tool
Inspector
- Every MoQ session in the page, including iframes and workers.
- Each control message decoded, with error names and how long the reply took.
- MSF and CMSF catalogs read; LOC, CMAF and timeline tracks decoded as their catalog declares.
- Which code in the page sent each message, and every problem in one list.
CLI
- Watch a web or native app’s session live, or record it to a file.
- Ask a relay which drafts it speaks and what it is publishing.
- Recreate LTE, Wi-Fi, satellite or a bufferbloated link, each direction on its own.
- Drop or hold back chosen objects, change conditions mid-run, replay any run exactly.
Insight
- Each release against the last: stalls, missing groups, time to first media.
- Find sessions by release, relay, browser or stall, and open any one on a timeline.
- Timing from the publisher, so a stall that started at the source says so.
- Alerts to Slack, PagerDuty or a webhook, and a Prometheus endpoint.
Built on open source libraries
The codec, client, proxy and trace format our tools are built on, MIT-licensed for Rust and JavaScript.
Rust crates
moqtap-codec
Zero-dependency wire codec for drafts 07–23.
moqtap-clientMoQT client for native QUIC and WebTransport.
moqtap-proxyTransparent intercepting proxy framework.
moqtap-trace.moqtrace file format reader and writer.
npm packages
Start where your player is
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