ffmpeg：如何添加pixellate效果？ [英] ffmpeg: how to add pixellate effect?

问题描述

我需要模糊一些上传的视频并进行编码。
由于模糊，这意味着像素化它们，所以大方块出现并模糊。

I need to blur some uploaded videos and encoded them. Infact by blur, it means pixellate them so "big squares" appear and blur it.

有什么想法我可以做到吗？ （ffmpeg会很棒，任何命令行的窗口工具都应该可以）

Any idea on how I can do that ? (ffmpeg would be great, by any command line windows tool should be ok)

谢谢。

推荐答案

FFmpeg可以支持包含pixeliz0r的frei0r过滤器。示例：

FFmpeg can support the frei0r filters which includes pixeliz0r. Example:

ffmpeg -i input -filter:v frei0r=pixeliz0r=0.02:0.02 output

这两个参数是：

• BlockSizeX：一个像素的水平尺寸


• BlockSizeY：一个像素的垂直尺寸

当然，更大的价值当然会创造更大的块。 Zeranoe FFmpeg版本包括frei0r，但是我不确定它是否适用，因为某些用户遇到问题尽管这可能至少在6个月之前，但它在 #ffmpeg IRC中。

A larger value will of course create larger blocks. The Zeranoe FFmpeg builds include frei0r, however I'm not sure if it works as some users were having issues with it in #ffmpeg IRC although this was probably at least 6 months ago.

至于Linux编译很简单。 Ubuntu用户可以按照 HOWTO：安装并使用最新的FFmpeg和x264 ，只需添加 frei0r-plugins-dev 作为依赖，然后将 - enable-frei0r 添加到您的ffmpeg配置中。

As for Linux compilation is simple. Ubuntu users can follow HOWTO: Install and use the latest FFmpeg and x264 and simply add frei0r-plugins-dev as a dependency and then add --enable-frei0r to your ffmpeg configure.

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