DupDub is a browser-based AI audio and video creation platform designed for content creators, marketers, educators, podcasters, audiobook producers, businesses, and developers. It combines text-to-speech, voice cloning, talking avatars, video translation, transcription, subtitle creation, scriptwriting, sound effects, recording, and video editing inside one production environment.
Its text-to-speech studio provides more than 700 AI voices across over 90 languages and accents, with more than 1,000 voice styles and scenarios. Users can assign multiple voices to a single project and adjust pronunciation, speed, pitch, rhythm, emphasis, and pauses. Custom lexicons, phonemes, and aliases help improve the pronunciation of brand names, technical terminology, abbreviations, and unusual words. Music and sound effects can also be added directly to generated narration.
DupDub’s voice-cloning tools let authorized users create reusable synthetic voices for videos, podcasts, advertisements, elearning, and multilingual content. Its AI avatar workspace can animate built-in presenters or uploaded human and animal photos. Photo, gesture, and motion avatars can speak from a written script, recorded voice, or uploaded audio while applying automatic lip synchronization and facial animation.
For localization, DupDub can transcribe audio and video, translate subtitles and spoken content, replace the original narration, and synchronize translated speech with the visible speaker. Video translation currently supports more than 40 languages, while broader voice and subtitle workflows cover a larger language catalog. Its subtitle-alignment tool can also synchronize a supplied script with an uploaded recording and export the result as an SRT file.
The platform includes browser-based screen, webcam, and microphone recording, as well as an editor for separating audio, adding captions, replacing narration, and preparing finished videos. Developers can integrate text-to-speech, voice cloning, avatars, translation, and transcription through DupDub APIs. A three-day trial is available, while paid plans use different generation allowances and credits.