Two prompts: Claude Opus 5.5 codes, renders and self-checks a full 1080p promo video
sujingshen · x · 2026-09-28
The author gave Claude Opus 5.5 just a URL and the instruction "make a promo video for X". The agent scraped the site to extract selling points, wrote code to draw animations frame by frame, rendered a 1080p video with ffmpeg, then screenshot-checked the output and fixed text overlapping the control bar.
When told there was no voiceover or BGM, it found its usual TTS source unreachable, downloaded an open-source voice model from GitHub, generated English narration timed to each frame (trimming overlong lines), synthesized an original soundtrack in code, and applied voice ducking and loudness normalization. The author never opened an editor or touched an asset library — calling the agent "a coder-editor" that ran the entire production pipeline itself.
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