How to re-narrate a children's video in another language
Upload the video and tell Vizard Agent to drop the music, keep the sound effects and narrate it in a new language. Vizard Agent separates the audio into stems, tests more than one separation method on the difficult scenes, casts a child's voice in the target language, and writes a line for every scene.
What do you type into Vizard Agent?
Name the three parts separately. Vizard Agent treats removing the music, preserving the effects and adding narration as three requirements to satisfy together, and stating each one is what stops it solving the easy one and approximating the rest. Describe the voice by age, because a children's video narrated by an adult reads completely differently.
Prompt
What does Vizard Agent actually do?
Localising a children's video means keeping every splash and engine noise while removing the music under them, which is a separation problem rather than an editing one. A method that is very good at pulling music out can be slightly destructive to percussive effects, so Vizard Agent tests the hardest scenes and checks the result by ear. In the session behind this article it:
- Installed a stem separator, checked the hardware acceleration and tested the model's speed on a sample before running it on seven minutes.
- Separated the audio into stems, analysed what each contained, and listened to them to verify the effects survived.
- Tested the separation on the hardest scenes, the car wash and the digging, and tried a second method there when the first thinned the effects.
- Searched for a child's voice in the target language across two passes and tested the result.
- Wrote and generated narration for all twelve scenes and checked each line against its scene's timing.
- Muted the music, kept the isolated effects, measured both tracks and mixed them, delivering 424.58 seconds at the source's own 2816x1440.
When does this not work well?
Stem separation is a genuinely hard problem, and how well it goes depends on how the original audio was mixed. Music and effects sharing frequencies can't be fully pulled apart, and percussive effects suffer most because they look like drums to a separator. You also need the rights to the video, and a synthetic child's voice is a choice to weigh for your audience.
Common questions
Will the sound effects really survive? Mostly. Vizard Agent isolates them and checks, and percussive effects are the ones that suffer.
Can Vizard Agent use a child's voice? Yes. It searches for one in the target language and tests it before generating the full script.
Why not just mute the audio and narrate over it? Because the sound effects are most of what makes a children's video engaging. Muting everything leaves a silent film with a voice on top.