How Captions Enables Anyone To Tell Their Story With Video
summary
Captions claims to let anyone make shareable talking videos by generating speech-driven lip sync from text using an internal multi‑stage Transformer called lift up plus third‑party TTS and alignment: AI Creator uses 11labs for text→audio, Whisper for word‑time alignment, and model optimizations (bounding‑box generation, 2s chunk parallelism, asset caching, torch compile hotspots) to cut P90 from ~17.5 to ~7 minutes at 512×512. Platform reports 10M creators, 3M videos/month, 75% users outside the US and adds AI twin and accent select for accent control.
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chapters (8)
- 0:00Captions and video storytelling
- 2:58AI Creator and AI Twin features
- 6:05AI video generation model
- 8:12Content moderation for AI videos
- 10:16Latency and cost optimization
- 13:44AI video creation process
- 15:10Accent selection for global reach
- 17:36Future of AI video generation
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