kfn2mp4 is a Python command-line utility that transforms KaraFun KFN karaoke files into standard MP4 video files. It extracts audio, background, and lyrics, then uses FFmpeg to produce a synchronized video with embedded subtitles in ASS format. It is intended for users who want to play or edit KaraFun content in common media players.
kfn2mp4 is an Other dev tools product. It focuses on converting proprietary KaraFun KFN karaoke files into standard MP4 videos with working lyrics and subtitles. kfn2mp4 is an open-source project aimed at karaoke enthusiasts. The project is open source (GPL-3.0). It runs on the command line.
It is developed by Lukasz Nowak, and the product first shipped in 2026. The project is developed in the open on GitHub with 1 commits in the last 90 days. Among its 5 catalogued features are KFN Conversion, MP4 Output, and Synchronized Lyrics.
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