ToneShift - Styleful Video Captions
Vercel
Video Captioning
Our Track 2 agent captions short videos in four tones: formal, sarcastic, humorous-tech, and humorous-non-tech. It reads /input/tasks.json, downloads each clip, samples key frames with ffmpeg, transcribes audio with Whisper when present, and builds a factual JSON context with a Fireworks vision model. A text model writes a neutral base caption, then rewrites it into the four styles with few-shot prompts. A judge step checks accuracy and tone and regenerates once if needed. The container writes /output/results.json and exits. Perception can run on CPU/GPU; generation uses Fireworks. We keep facts shared across styles so humor does not invent details. Built for varied scenes beyond the three sample clips.
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