The Generative category is worth knowing about. Most people don’t realize ffmpeg can produce test patterns, fractal animations, and signal sources entirely from internal filters — no input file needed. fftool surfaces these. They’re useful for testing pipelines, generating placeholders, or just seeing what ffmpeg can do.
// Step 5: use it! vvvvv
，这一点在PG官网中也有详细论述
张禾就在一次面试中，遇到了一个曾在短视频里刷到过的知识点，但她发现自己根本答不出来。“一方面是因为我紧张，还是按照惯性思维去思考问题。我刷到的短视频并没有改变我的思维方式，让我真正学到什么。”
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