Unmixr Dubbing vs Voicebox

Unmixr Dubbing converts speech into dubbed video or audio by transcribing it, translating the script, and assigning AI voices to detected speakers. Users can choose distinct voices, edit translated lines, split or merge segments, and regenerate changed segments. Timing and speaking speed can be adjusted segment by segment. Exports include dubbed media and translated subtitles in SRT and VTT formats. Uploads can be up to 60 minutes; MP4, MOV, MP3, and WAV are listed as common formats. The dubbing page describes support for 100+ languages, while plan details list 85. Dubbing does not re-animate lips or change video frames. A free account includes 5,000 credits and watermarked exports up to three minutes, with no trial; the seven-day trial instead includes 20,000 credits. Paid plans start at $9 a month. Background music separation is available on paid recurring plans, but not in the trial. The service is listed for web and API platforms, though the Lite plan has no developer API.

Voicebox is a free, open-source local AI voice studio for voice cloning, speech generation, dictation, and agent voice output. Its desktop app can clone a voice from as little as three seconds of audio, supplied by file, microphone recording, or system capture. The maker lists seven text-to-speech engines for cloning, preset voices, and delivery control. A timeline editor supports multi-voice narratives, arranging tracks, trimming clips, and mixing conversations; effects include pitch shift, reverb, delay, and compression. Dictation uses a global shortcut to send transcripts to the focused text field or clipboard, with local Whisper models supporting 99 languages. MCP-aware agents such as Claude Code, Cursor, and Cline can speak through Voicebox, and a local REST API provides speech generation and related functions. The privacy policy says the offline desktop app requires no account and does not send recordings, profiles, transcripts, generations, or settings to the maker. Local is free with unlimited local generations and captures. Cloud and mobile sync are marked as coming soon, and cloud pricing and limits are not final.