Who is Stream Master Pro for?

Stream Master Pro is a consumer product built for firefox users who inspect and download streaming media.

Does Stream Master Pro have a free plan?

Yes — Stream Master Pro is free to use.

What platforms does Stream Master Pro run on?

Stream Master Pro runs on the web and embeddable surfaces.

Is Stream Master Pro still active?

Unverified. Stream Master Pro has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to Stream Master Pro?

Similar projects tracked by PulseGate include Stream Detector Pro, MediaManifest Pro, and Stream Finder.

Who makes Stream Master Pro?

Stream Master Pro is developed by B52.

How long has Stream Master Pro been around?

Stream Master Pro first shipped in 2023.

Back to the index

Stream Master Pro

Name: Stream Master Pro
Author: B52

mozilla.orgDownloaders & offline video

Stream Master Pro is a Firefox extension that tracks playlists, manifests, subtitles, and selected file types across HLS, HDS, MPEG-DASH, and Smooth Streaming. It can copy URLs, generate commands for media tools, and download detected video and audio files.

FreeWebEmbeddable

Visit mozilla.org

3alternatives

8features

2023since

Overview

8 features

In the Downloaders & offline video space, Stream Master Pro takes a focused approach. Finding, monitoring, copying, and downloading streaming manifests, subtitles, and media files from browser streams. Stream Master Pro is a consumer product aimed at firefox users who inspect and download streaming media. Stream Master Pro costs nothing to use. It runs on the web and embeddable surfaces.

B52 builds and maintains Stream Master Pro, and it first shipped in 2023. Among its 8 catalogued features are manifest tracking, subtitle monitoring, and media downloads. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Manifest tracking
Subtitle monitoring
Media downloads
URL copying
Command generation
Custom file types
Content-Type monitoring
Download history access

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed19 Sep · 15:34 UTC
The Stream Detector verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Stream Master Pro

What is Stream Master Pro?: Finding, monitoring, copying, and downloading streaming manifests, subtitles, and media files from browser streams. It is catalogued under Downloaders & offline video on PulseGate.
Who is Stream Master Pro for?: Stream Master Pro is a consumer product built for firefox users who inspect and download streaming media.
Does Stream Master Pro have a free plan?: Yes — Stream Master Pro is free to use.
What platforms does Stream Master Pro run on?: Stream Master Pro runs on the web and embeddable surfaces.
Is Stream Master Pro still active?: Unverified. Stream Master Pro has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to Stream Master Pro?: Similar projects tracked by PulseGate include Stream Detector Pro, MediaManifest Pro, and Stream Finder.Stream Detector Pro MediaManifest Pro Stream Finder
Who makes Stream Master Pro?: Stream Master Pro is developed by B52.
How long has Stream Master Pro been around?: Stream Master Pro first shipped in 2023.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who inspect and download streaming media
Model: B2C
Solves: Finding, monitoring, copying, and downloading streaming manifests, subtitles, and media files from browser streams.

Registered as

Firefox Add-ons: stream-master-pro

Developer

B52

Index record

Indexed: 19 Sep 2026
Lifecycle: Alive
Last seen: 19 Sep 2026

Identity audit (13)

Slug: the-stream-detector-mozilla-org-x5atu0
Lifecycle state recorded: 19 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 19 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 19 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/stream-master-pro

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