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Video conversion targets
Audio extraction targets
How conversion works
1
Detect the stream
Video Downloader Plus identifies an HLS or DASH stream on the page and surfaces it in the popup.
2
Choose a target format
Select your desired output format from the format picker before starting the download.
3
Local processing via WebAssembly
Video Downloader Plus downloads all segments and passes them through a WebAssembly-based media engine running in your browser. No data leaves your device during this step.
4
Save the output file
The finished file is written to your downloads folder in the format you selected.
Format comparison
When to use each format
- MP4 — The right choice for almost everything. Works on every phone, TV, tablet, and browser without configuration.
- MKV — When you want to preserve alternate language tracks, multiple subtitle files, or attach metadata for a media server like Plex or Jellyfin.
- MOV — When the file is headed into Final Cut Pro or another Apple editing tool that handles MOV natively.
- WebM — When file size matters and the destination is a browser or Linux environment. Also the format to reach for when you want VP9 or AV1 output.
Audio format comparison
Key details
- Local-only processing — The WebAssembly media engine runs entirely in your browser. Your video data stays on your machine.
- Lossless quality — Video Downloader Plus remuxes streams into the target container without re-encoding video or audio, so there is no quality degradation for supported codec combinations.
- Automatic track muxing — HLS and DASH streams with separate audio and video renditions are merged into a single output file before being saved.
- DASH SegmentBase passthrough — When a DASH stream uses SegmentBase (meaning the content is already a standard MP4 with byte-range requests), Video Downloader Plus downloads the file directly and skips the conversion step entirely.