Why does the audio output skip video?
MP3, WAV, AAC are audio-only containers — video tracks would be invalid. We auto-discard video for these targets.
Paste an .m3u8 URL or drop a local playlist, choose any output container, and convert client-side. Video targets keep video + audio; audio targets discard video automatically.
MP3, WAV, AAC are audio-only containers — video tracks would be invalid. We auto-discard video for these targets.
MP4 keeps both tracks by default. For an audio-only MP4, use the dedicated audio-only converters or Subtitle Mux toolchain.
Most often CORS. Try the upload tab as a workaround.
WebVTT subtitle tracks aren't currently muxed.
Output writes to OPFS, so files larger than RAM still work.
Chrome 105+, Edge 105+, Safari 16.4+, Firefox 130+. WebCodecs is required.