Opus 5.5 builds a colorful video in one shot with a zero-dependency render pipeline
Asked to make the video more colorful, Opus 5.5 produced it in one shot: a single index.html rendered frame by frame with Playwright and stitched into mp4 with ffmpeg, plus Python to analyze audio beats.
tried using the same prompt and asked to make the video more colorful. opus 5.5 is really amazing one shot, it put all the code in a single index.html file and rendered it using playwright frame by frame in a headless window, then ffmpeg to generate the mp4. it used a seek function and eval to render each frame. the model seems to prefer doing everything with zero dependencies from scratch instead of using tools like remotion, egaki, or hyperframes. maybe it's because anthropic created special RL environments to create videos from code? and they probably went for the simplest possible approach. the model seems to have an internal idea of the video it wants to make. it can even reason spatially. it then outputs some spaghetti code with magic numbers to make the video actually render. the code doesn't seem to be the important part. it's just an output artifact. i wonder how good the model is at recreating the internal video representation from the code. for analyzing the audio, it used python. it used it to output timestamps of the beats and used them as magic numbers in the html page. if things continue to go this way, humans can't look at the code anymore. it's like looking at assembly. it makes zero sense to us. we need a higher-level form to describe the model's internal representation. markdown sure isn't that. traditional tools like ae aren't it either. here is the code it used https://gist.github.com/remorses/3d467b50a0519ef7859823046dc9c427
This post quotes another post: “Opus 5.5 generates a code-only UI morph animation, prompt template open-sourced”