This guide shows you how to start a dubbing project in CAMB.AI Studio: upload your video, choose your languages, decide how much CAMB.AI should do automatically, and set up the project before you begin.
Before you start
Supported formats: .mp4, .mov, .mp3, .wav, .flac and .aac. MXF files are supported on the Expert and Enterprise plans.
Maximum file size and length depend on your plan: from 500 MB and 5 minutes per video on Free, up to unlimited size and 120 minutes on Expert. The upload box shows your own limits. See Price plans.
For the best voice match, we recommend at least 90 seconds of speech per speaker.
Videos dubbed on the Free plan include a watermark.
Step by step
Step 1. Open Instant Dubbing. In the left sidebar, under Projects, click Instant Dubbing. (You can also click Dub videos, any language on the Home page.)
Step 2. Choose your languages.
Source Language: the language spoken in your video.
Target Languages: tick one or more languages to dub into. You can dub into several languages in one project.
Step 3. Add your video. Use one of the two tabs at the top:
File: click Click or Drag to Upload Here, or drag your file into the box.
Link: paste a Google Drive file or folder link in Upload Link. Make sure the link is shared publicly ("Anyone with the link").
Step 4. Choose how much to automate. Click Choose How Much to Automate, pick an option, then click Select Option.
Transcript Only (recommended): CAMB.AI creates the transcript, and you guide each stage yourself: transcript, translation and voiceover. More steps, but the best quality and the most control. Best for multi-speaker and entertainment videos.
Transcript + Translation: CAMB.AI creates the transcript and translation, and you review the translation before the voiceover is made. Useful when you know the target language but can't check the original.
End-to-End Dubbing: CAMB.AI creates the transcript, translation and voiceover in one go, and you go straight to reviewing the voices and producing the final mix. Fastest and beginner friendly; works best for videos with 1 or 2 speakers.
đł Tip: fixing the transcript or translation before voices are generated means you won't spend credits regenerating dialogues later.
Step 5. Check the Settings panel. On the right, under Settings:
Project Name: give your project a name you'll recognise.
Speech Model: the AI voice model used for dubbing. New projects use MARS8.1-Beta (best quality, widest language coverage). Click it to choose another: MARS8-Pro (balanced speed and quality; the only model where the speaker audio settings work), MARS8-Instruct (most expressive, for TV and film), MARS-X Instruct (Beta) or MARS7 (legacy). See Which speech model should I choose?
Transcription Mode: Fast produces a transcript quickly while keeping high quality; Slow takes longer but can be more accurate, especially for complex audio.
Translation instructions (optional): tell the AI how to translate, not just what. For example:
Tone: "Formal" for business or legal content, "Casual" for vlogs and social media.
Length: "Concise" keeps translations short so they fit the speaker's original timing, which matters a lot for dubbing.
Audience: e.g. "Avoid technical jargon" or "Use Gen-Z slang".
Step 6. Project Setup (optional). Expand Project Setup to set:
Folder: where the project is saved.
Description: a short note about the project.
Number of Speakers: leave on Auto, or set the exact number if you know it, to help CAMB.AI separate the voices.
Keywords: names, brands and technical terms to keep consistent across languages. See What are Keywords?
Step 7. Advanced Audio Controls (optional).
Include music in foreground (on by default): keeps music together with the speech during audio separation. Turn it off if you want music kept only in the background track.
My audio contains only speech: turn on if there's no music, sound effects or background noise.
Custom audio: upload your own Background music & effects track, or your own Voice track, to replace what CAMB.AI detects.
Step 8. Advanced Transcription Options (optional). Already have subtitles? Upload them to skip automatic transcription:
Original Transcript (.srt): subtitles in the source language.
Translation language and Translated Transcript (.srt): your own translation for a target language. If you don't upload one, CAMB.AI translates for you.
Files must be .srt and under 2 MB.
Step 9. Begin dubbing. Click Begin Dubbing Project. Stay on the page until the upload finishes; closing or refreshing it can stop the upload. When processing is done, the project opens in the editor so you can review, edit and download it. You can find your projects again in the History tab or on the Projects tab of the Home page.
What's next?
Troubleshooting
The Begin Dubbing Project button is greyed out: check you've chosen a source language, at least one target language, added a file or link, and picked an automation option.
My Google Drive link doesn't work: make sure sharing is set to "Anyone with the link".
My file is rejected: check the format and your plan's size and length limits shown in the upload box.
Still stuck? Contact us.