Supported Video Formats
Stream Video Downloader detects and processes HLS (.m3u8) streams and direct MP4 files. It does not support MPEG-DASH manifests, DRM-protected video, or YouTube. The rest of this page explains exactly where those lines fall.
What's supported
HLS / M3U8 — live and on-demand
Both master playlists (multiple quality variants) and media playlists (a single quality's segment list). Covers:
- Multiple bitrate/resolution variants — the converter picks the highest-resolution variant
- Separate audio renditions — selectable on the audio extraction page when more than one exists
- AES-128 segment encryption — decrypted automatically during conversion
- Live broadcasts — played with a LIVE badge; conversion applies to VOD, not live
- WebVTT subtitle renditions
Direct MP4 files
A single progressive MP4 served over HTTP(S) — detected and downloaded as-is, without needing conversion.
What's not supported
YouTube
Explicitly excluded from detection.
DRM-protected streams
Streams protected by Widevine, FairPlay, or a comparable DRM system are not supported. This is a different, much stronger barrier than HLS's own AES-128 segment encryption, which the converter handles on its own.
MPEG-DASH (.mpd)
The extension and converter parse HLS playlists specifically. DASH manifests use a different, XML-based format and aren't read.
Output formats
Frequently asked questions
Does Stream Video Downloader support MPEG-DASH?
No. It only parses HLS (.m3u8) playlists. DASH manifests (.mpd) use a different, XML-based format and are not read by the extension or the converter.
Can it download DRM-protected video?
No. Content protected by a real DRM system — Widevine or FairPlay — is not supported. That's different from HLS's own lightweight AES-128 segment encryption, which the extension and converter handle automatically when present.
Does it work on YouTube?
No. YouTube is explicitly excluded from detection.
What resolution can it convert?
Whatever resolution the source stream's highest-quality variant offers. Conversion copies the existing video stream rather than re-encoding it, so there's no separate quality cap on top of that.
What file do I get after converting?
An MP4 file from the /convert page, or an M4A (AAC audio) file from the /audio page.