许多这样做的工具，例如 FBGrab 和 fbdump ;查看这两个源，很容易扩展其中一个或编写自己的视频而不是快照。

Many tools for doing so, for example FBGrab and fbdump; look at the sources for those two, it would be pretty easy to extend either one or write your own which captures video instead of just snapshots.

但是，我建议将写入帧缓冲区的程序也记录为一个记录，以便使捕获帧在写入帧之间同步（而不是部分地通过写，跳过或...）

However, I would recommend that the program writing to the framebuffer be the one recording as well, in order to synchronize capturing frames between writing them (and not partially through a write, or skipping, or ...)