The Livestream Expertsv1.0.3 · UNIVERSAL
Never get
caught off air.
Stream Check is the pre-flight surveyor and live watchdog for on-location broadcasts. Prove the venue’s network before the doors open — then catch dead air, silence, and a dropped uplink the instant they happen.
Two jobs. One tool.
Before the show, prove the network. During the show, catch the break before the client does.
Survey the venue
Open it on arrival, hit Run survey, and within seconds know whether this network will actually let your stream out. TCP/TLS to the real Twitch, YouTube and Facebook ingest, STUN for Teams/Zoom, plus a captive-portal and uplink-speed read.
Watch the stream
Point it at the program return: a publicly available stream URL or any window on screen, and it watches for a frozen or black picture, silent audio, a quality drop, or a dropped uplink, then strobes the whole screen, silently, no sound, so the crew reacts in seconds, not minutes.
Will the stream get out?
The whole survey runs in parallel and reports like a broadcast rundown: green tally, it's open; red, it's blocked.
The watchdog that screams.** silently, of course
Four channels watched at once: video, audio, detail, uplink. When one goes bad, the whole screen strobes so nobody misses it.
Frozen or black frames caught from on-screen motion and luma: the picture nobody at FOH is looking at.
Silence detection with a live dB meter and a level history: the receipt for "it was quiet."
A soft-picture / bitrate-collapse read, plus a heartbeat on this Mac's own connection.
A one-click incident report: every alarm, its duration, the audio receipt, and a snapshot of exactly what aired when it fired.
Pinpoint the break.
Purely additive. Everything else works without it. Connect a Restream account and Stream Check reads the real upstream numbers, so a dead stream names a culprit instead of a mystery.
The local monitor catches the break on this Mac. Restream tells you which side of the chain it’s on. Stream Check taps Restream’s real-time telemetry socket and follows the program from the field encoder all the way out to every destination.
Feed → Restream
The live ingest arriving from the field encoder: total, video, and audio bitrate, frame rate, packet loss, resolution, and codec.
Bitrate collapses or loss spikes and the break is your feed: the venue, the uplink, or the encoder, before Restream ever sees it.
Restream → platforms
Per destination, the delivery status (CONNECTED, CONNECTING, or DISCONNECTED) plus outbound bitrate and buffer.
Incoming stays clean but a channel won’t hold and the break is Restream or its hop to that platform, not you.
On each platform
What the platform reports back on its own: online state and live viewer count, resolved to real channel names like YouTube and Twitch.
One channel drops while the rest keep delivering and the break is that platform. The show stays live everywhere else.
The real endpoints.
A curated list for the stable platforms, plus a paste-URL field for the dynamic ones: TikTok, LinkedIn, and client custom ingest.
Not Ookla. On purpose.
ISPs prioritize traffic to the speed-test sites everyone recognizes, so those numbers read high and mean nothing at a venue. Stream Check measures against neutral endpoints the ISP has no reason to favor: the honest number.
A browser can’t do this.
A successful connect to live.twitch.tv:1935 literally proves this network lets your stream reach Twitch. No probe server. No guessing.
Browsers only speak HTTP(S) and WebSocket. Stream Check opens the real TCP and UDP sockets a broadcast encoder uses.
Browsers hard-block RTMP’s 1935 and dozens of others as "unsafe." A native app probes exactly the ports your show will use.
It reaches the actual platform ingest, so it catches venues that allowlist by destination, exactly where you get burned.
Run the
check.
Free, and built by a live-production crew for their own shows. Download it, run a survey on your next load-in, and never get surprised on air again.