ffmpeg在drawtext中单引号

问题描述

即使我逃避他们，我也无法获取ffmpeg的drawtext视频过滤器来绘制撇号/单引号，当它们在drawtext的text =参数中时。双引号工作正常，从文件加载的文本（例如textfile =example.txt）中的撇号工作正常。这是一个错误吗？

例如

  ffmpeg -i test.mpg -vf drawtext =撇号不打印... 
 ffmpeg  - i test.mpg -vf drawtext =即使他们没有转义... 
  

  ffmpeg -i test.mpg -vf drawtext = text =It\\\\\很容易
  

生成包含撇号的文本叠加层。文本被解析了几次，所以你不仅要逃避报价，还要逃避斜线逃避报价。

在这种情况下，您使用文本文件的替代方法可能是更好的方法。

I haven't been able to get ffmpeg's drawtext video filter to draw apostrophes/single quotes when they are in drawtext's "text=" parameter, even when I escape them. Double quotes work fine, and apostrophes in text loaded from a file (e.g. textfile="example.txt") work fine. Is this a bug?

e.g.

ffmpeg -i test.mpg -vf drawtext="apostrophes don't print" ...
ffmpeg -i test.mpg -vf drawtext="even when they\'re escaped" ...

解决方案

Special character escapes are like violence: if they're not solving your problem, you're not using enough.

ffmpeg -i test.mpg -vf drawtext=text="It\\\\\'s so easy"

Produces a textual overlay that includes an apostrophe. The text is being parsed a couple times, so you not only have to escape the quote, you also have to escape the slash escaping the quote. Twice.

Your alternative of using a textfile might be a better method in this situation.

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