Kaushal AI

A mobile learning app that dubs every lesson into Hindi, Marathi and English with AI, so learners watch in the language they know best.

One lesson, three languages.

Each lesson is recorded once, then dubbed into Hindi, Marathi and English automatically.

Built with

Learners pick a format first, short videos or a full certification course, then browse by topic or search.

Kaushal AI asking the learner to choose between short videos and certification courses.
Pick a format
Short videos, or a certification course.
Searching courses by topic in Kaushal AI, with results showing how many lessons each has.
Search by topic
Each result shows how many lessons it holds.

Four steps run on every upload. Sarvam handles the speech and the languages; FFmpeg puts the new audio back on the video.

Source video
Recorded once
01
Transcribe
The lesson’s speech becomes text.
Sarvam · Speech to text
02
Translate
The text is translated into each language.
Sarvam · Translation
03
Voice
A new spoken track is made for each language.
Sarvam · Text to speech
04
Merge
The new audio goes back onto the original video.
FFmpeg · Audio and video
- हिन्दीHindi
- मराठीMarathi
- English

Fig. 1From one recording to a lesson in each language.

Courses come in chapters, lessons play full screen, and the profile keeps the learner’s account in one place.

A Kaushal AI course with its chapters listed.
Chapters
Each course, chapter by chapter.
A lesson playing full screen in Kaushal AI, with a language button.
The player
Full screen, with a language button.
A learner’s profile in Kaushal AI, with their plan and a sign-out button.
Profile
The learner’s plan and account.

The people who run the courses manage them in the app: details, chapters and the order they play in.