The problem Sahayak solves Sahayak: Educational Video Revolution in 100 Words The Problem It Solves Sahayak solves the critical challenge of creating educational videos at scale for 260 million Indian students. Traditional video production is prohibitively expensive and time-consuming, while existing AI solutions like Google Veo 3 lack educational focus and remain costly.
How People Can Use It Educators can instantly generate curriculum-aligned videos on any topic through our API. Sahayak creates videos by:
Generating sequential image frames with educational accuracy Creating synchronized audio narration Assembling a complete video in under 60 seconds Reducing costs by 95% compared to manual production This transforms educational content creation from weeks to seconds.
Challenges we ran into Challenges I Ran Into The most significant hurdle was implementing audio synchronization in our video generation pipeline. Initially, videos were created without sound despite FFmpeg commands appearing correct. Investigation revealed two critical issues: insufficient audio normalization and incorrect audio stream mapping.
After extensive debugging, I discovered the solution required:
Adding explicit volume boosting ( -af volume=4.0
) Implementing proper audio normalization ( loudnorm=I=-16:TP=-1.5:LRA=11
) Creating enhanced FFmpeg commands for video assembly The breakthrough came by developing a comprehensive audio diagnostic tool that analyzed generated videos and fixed existing assets, ensuring perfect synchronization between educational visuals and narration.
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