StreamWatch HLS Monitor

Name: StreamWatch HLS Monitor
Author: Sylvain Corvaisier

Multiview Stream Health Alerts

A native Mac control-room monitor for up to nine live HLS streams at once, with stall detection, colour-coded health, event logging and webhooks.

App Store

Fact sheet

App name: StreamWatch HLS Monitor
Developer: SAS Corvaisier
Price: Free to download, with an optional subscription.
Platforms: macOS
Minimum OS: macOS 15.0
Release date: 16 March 2026
Latest version: 1.0.4 (18 August 2026)
Category: Utilities, Photo & Video
Age rating: 17+
Store languages: 8
Store links: App Store
Website: ireplay.tv/streamwatch
Press contact: Sylvain Corvaisier, vendredi-app.fr

About the app

StreamWatch is built for the people running 24/7 linear channels: FAST channel operators, radio broadcasters, OTT platform teams and streaming infrastructure engineers. Up to nine .m3u8 streams sit in a configurable multiview grid with green, yellow and red health states.

Detection is the point. Stalls are caught with sub-second precision, bitrate and resolution are tracked per stream, degraded streams raise a sticky yellow alert held for five minutes or until acknowledged, and failures retry with exponential backoff from two seconds to thirty-two.

Every status transition is logged with a timestamp and duration, filterable per stream or globally, exportable as JSON or CSV, and posted to your alerting stack as a webhook. Presets rotate automatically and pause on an affected preset until it is acknowledged.

Key features

Nine simultaneous HLS streams in nine selectable multiview layouts
Sub-second stall detection with live, degraded, down and unknown states
Webhook notifications on status change, with exponential backoff on failures
XMLTV EPG per stream, with the now-playing title on each cell
Admin and operator roles with biometric unlock, and operator mode hiding URLs

The story

Enterprise stream probes are priced and scoped for an organisation with a dedicated monitoring team, which leaves the small operator running six FAST channels watching them in browser tabs. StreamWatch is the control-room view at the size that actually exists: a native Mac app, in the menu bar, launching at login, that says which of your nine streams is down before a viewer emails to say so.

About the developer

Sylvain Corvaisier has been writing native Apple software since the first public iPhone SDK in 2008. He works from Rennes, France, under SAS Corvaisier, and has published 21 apps across 7 platforms, from iPhone and iPad through to Apple Watch, Mac, Apple TV, Android, Fire TV and Roku. Everything is built natively, one platform at a time, with no cross-platform wrapper in between. He also runs Vendredi App, a monthly workshop in Rennes where a working app ships in an afternoon.

For interviews, review copies or extra assets for StreamWatch HLS Monitor, use the contact form at vendredi-app.fr.

Contact