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RENDEXER pro
RENDEXER pro

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How to Download Bluesky, Threads & Mastodon Videos as 1080p MP4 (Fix .m3u8 Stream Issue)

#webdev #productivity #tutorial #showdev

If you have ever tried saving a video from Bluesky, Threads, or Mastodon (Fediverse) directly in your mobile or desktop browser, you have probably run into a frustrating issue:

  1. Bluesky serves videos as fragmented HLS (.m3u8) playlists rather than direct .mp4 files—meaning normal browser saving only downloads a tiny 0.3 KB text playlist instead of the actual playable video.
  2. Threads and Mastodon often separate multi-image carousels or voice notes, making batch archiving slow.

To solve this directly in the browser without command-line tools like ffmpeg or yt-dlp, you can use Rendexer PRO.

What is Rendexer PRO?

Rendexer PRO is a free, zero-login web utility built for downloading and archiving media from Threads, Bluesky, and Mastodon:

  • Bluesky Video Downloader: Automatically stitches and transmuxes .m3u8 HLS video segments into a universal faststart 1080p .mp4 file with accurate duration headers that play smoothly on iOS Safari, Android Gallery, and video editors.
  • Threads Video & MP3 Downloader: Save 1080p Threads videos and extract 320kbps MP3 audio or voice notes with an inline preview player.
  • Mastodon & Fediverse Downloader: Download MP4 videos, GIFVs, and audio streams from any federated Mastodon instance (mastodon.social, mstdn.jp, fosstodon.org, etc.).
  • Raw 4K Photo & Carousel ZIP Archiver: Download uncropped original JPEG/PNG images directly from AT Protocol and Fediverse servers, or bundle entire multi-photo carousels into a single .zip archive in one click.
  • PC-to-Mobile QR Transfer: Scan a dynamic QR code to transfer extracted videos or audio directly to your phone without cables or cloud logins.

How to Use It (3 Simple Steps):

  1. Copy the public post link from Bluesky (bsky.app), Threads (threads.net / threads.com), or Mastodon.
  2. Paste the URL into https://www.rendexer.com/.
  3. Click Download HD MP4, Extract MP3 Audio, or Download All as ZIP.

It requires zero account registration, adds no watermarks, and is 100% free across Android, iOS, Windows, and macOS browsers.

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