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DownStream

mozilla.orgDownloaders & offline video

PulseGate's liveness check found it on 18 Sep 2026; it is registered on Firefox Add-ons and has been in the index since 18 Sep 2026. How this is checked

DownStream is a Firefox extension that detects HLS, DASH, progressive, and other media streams on webpages. It downloads selected quality levels, merges separate audio and video tracks, preserves subtitles, and saves the result as a single playable file.

Inferred · not functionally tested

FreeWebEmbeddablemacOSWindowsLinux
DownStream preview
Visit mozilla.org
1alternative
8features
2026since

Overview

6 features

Purpose: Downloading streamed video with separate audio, video, and subtitle tracks as one playable file.

Inferred · not functionally tested

Audience: Firefox users who download online video and audio

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: free · license: Proprietary · platforms: WEB · deployment: browser, embeddable, macos, windows, linux

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: addons.mozilla.org · addons.mozilla.org. These links do not verify the individual claims.

DownStream sits in PulseGate's Downloaders & offline video category. Inferred · not functionally tested: It focuses on downloading streamed video with separate audio, video, and subtitle tracks as one playable file. Inferred · not functionally tested: DownStream is a consumer product aimed at firefox users who download online video and audio. Basis unknown · not verified: DownStream costs nothing to use. Basis unknown · not verified: DownStream is available on the web, embeddable surfaces, macOS, Windows, and Linux.

It is developed by TheFantas, and it first shipped in 2026. Inferred · not functionally tested: Among its 6 catalogued features are HLS detection, DASH detection, and progressive 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.

Tasks: Inferred · not functionally tested

  • HLS detection
  • DASH detection
  • Progressive downloads
  • Audio-video merging
  • Subtitle preservation
  • Quality selection

Topics: Inferred · not functionally tested

Tags
firefox-extensionhls-downloaderdash-downloadermedia-merging

JSON profile · Text profile · Access guide

Built with & integrations

Runs on
BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

Public signals
HTTPSPrivacy PolicyTerms of ServiceFree tierMulti-languageStore listing found

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed18 Sep · 04:27 UTC
    DownStream seen via Firefox Add-ons
    Source: Firefox Add-ons · Open

Frequently asked questions about DownStream

What is DownStream?
Inferred · not functionally tested: DownStream focuses on downloading streamed video with separate audio, video, and subtitle tracks as one playable file. It is catalogued under Downloaders & offline video on PulseGate.
Who is DownStream for?
Inferred · not functionally tested: DownStream is a consumer product built for firefox users who download online video and audio.
Does DownStream have a free plan?
Basis unknown · not verified: Yes — DownStream is free to use.
What platforms does DownStream run on?
Basis unknown · not verified: DownStream runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is DownStream still active?
PulseGate's liveness check found it on 18 Sep 2026.
What projects are similar to DownStream?
Similar projects tracked by PulseGate include Stream Video Downloader, HLS Stream Downloader, and Stream.Stream Video DownloaderHLS Stream DownloaderStream
Who makes DownStream?
DownStream is developed by TheFantas.
How long has DownStream been around?
DownStream first shipped in 2026.

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