Client-side Converter — MP4 → MP3 (no server)
Use only with videos you own or are permitted to convert.
Select local MP4/Video file:
Convert to MP3 (extract audio)
Transcode/Remux to MP4
MP3 quality (VBR 0-9 — lower is better):
0 (best)
2
4
6
8
Progress / Log
FFmpeg not loaded.
Output