Will it download the entire stream?
No — only the bytes needed to parse the playlist + a few segment headers. We rely on Mediabunny's lazy loading.
M3U8 Playlist Inspector
Paste an .m3u8 URL or drop a local playlist to inspect duration, tracks, codecs, languages, and resolutions. Read-only — nothing is uploaded.
Frequently asked questions
Why does my m3u8 fail to load?
Almost always CORS. Try downloading the playlist + .ts segments locally and use the upload tab.
Can it detect DRM / encryption?
If the playlist references EXT-X-KEY, the format will probe but track decoding may fail later. Encryption is read-supported, write is not.
Does it parse multi-rendition master playlists?
Yes — Mediabunny resolves the master playlist and surfaces tracks from the chosen rendition.
Subtitles?
WebVTT subtitle tracks aren't fully exposed — Mediabunny does not currently surface them as named tracks.
Which browsers are supported?
Chrome 105+, Edge 105+, Safari 16.4+, Firefox 130+.