ffmpeg 知乎教程

https://zhuanlan.zhihu.com/p/455572544

The issue links to an external tutorial on Zhihu. Review the linked content to understand what ffmpeg-tool does and how it helps newcomers. Determine if the tutorial should be integrated into the project's documentation, referenced, or used as a basis for creating local guides. Check the repository for existing documentation structure to see where this information fits.

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