FastStream Video Player
Stream videos without buffering in the browser. An extension that gives you a better, accessible video player designed for your needs.
FastStream Video Player - Buffer-Free Streaming
"FastStream Video Player" is a Firefox add-on designed to replace standard video players on websites, providing faster streaming, customizable subtitles, and adjustable audio/video settings. With features like parallel downloading and extensive accessibility options, it enhances your video viewing experience. The player supports various video formats and can be easily activated on any website. FastStream prioritizes user privacy and does not collect telemetry, making it a safe choice for effortless streaming.
Add-on stats
Weekly download count: 254
Firefox on Android: No
Risk impact: Very high risk impact 
Risk likelihood:
Manifest version: 3
Permissions:
- storage
- tabs
- webRequest
- declarativeNetRequest
- downloads
- cookies
- contextualIdentities
Host permissions:
- <all_urls>
Size: 3.59M
Email: an*****@gmail.com
URLs: Website
Ranking
Other platforms
Not available on Android
Not available on Edge
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Add-on summary
Tired of having videos buffer with slow internet speeds? Frustrated by a website's lack of accessibility features? This extension will replace videos on websites with a video player designed for your needs. Say goodbye to buffering and hello to a more accessible video experience!
- Automatic fragmentation and parallel requests for up to 6x faster download speeds. Watch videos without interruptions by predownloading the video in the background.
- Advanced subtitling features include: customizable subtitle appearance, built-in OpenSubtitles support to find subtitles on the internet, and an intuitive subtitle syncing tool to adjust subtitle timings on the fly.
- Adjustable audio dynamics (equalizer, compressor, mixer, volume booster), and video settings (brightness, contrast, hue, LMS daltonization for color blindness) for your unique audiovisual preferences.
- 20+ remappable keybinds and accessible tool buttons for easy control of the player.
- Available in multiple languages! Translated into Spanish, Japanese, Russian, and Malay by the FastStream community. Support for more languages is coming soon!
The player currently supports:
- MP4 videos (.mp4)
- HLS streams (.m3u8)
- DASH streams (.mpd)
- Youtube
To use the player, simply:
See moreUser reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Improves video loading speeds significantly
- Allows for video streaming from various sites without buffering
- Subtitles and search in open subtitles work well
- User-friendly interface and customizable settings
- Open-source, which adds value and trust to the add-on
Cons
- Some users experience issues with buffering despite the add-on
- Integration with other downloading tools (like IDM) is inconsistent
- Users need to manually enable the extension on video pages for it to work properly
- Limited information on changing video quality during playback
- Download feature reliability concerns
Most mentioned
- Improves buffering speed and video loading
- Requires manual activation on video pages for functionality
- Compatible with various video sites
- Users report a significant enhancement in streaming experience
- Ability to download streams is highlighted but not universally reliable
User reviews
Genius app!
I was just looking for some solution against loading a small buffer when watching movies, because due to the overloaded network sometimes the buffer does not have time to load enough video, and there are constantly slowdowns, but this player makes just an amazing move, loading the entire movie at once! Perfect!
by Firefox user 18164338, 2025-01-16
Fantastic work! It does everything it says it does. It works on all kinds of sites, and it definitely makes the videos load faster most of the time. The subtitles work well. It has the option to search in open subtitles; I've only used it once, but it did work. I honestly only have good things to say; no complaints here.
by manux, 2025-01-16
work fine. the player can also download the stream.
by kerabera, 2025-01-08
Add-on safety
Risk impact
FastStream Video Player requires a lot of sensitive permissions. Exercise caution before installing.
Risk likelihood
FastStream Video Player is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
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