Document that path is broken by Asar, closes #10

README.md

@@ -34,10 +34,20 @@ const ffmpeg = require('fluent-ffmpeg');
 ffmpeg.setFfmpegPath(ffmpegPath);
 ```
 
-## Warnings during install
+## Known issues
+
+### Warnings during install
 
 To automatically choose the binary to install, [optionalDependencies](https://docs.npmjs.com/files/package.json#optionaldependencies) are used. This currently outputs warnings in the console, an issue that is [tracked by the npm team here](https://github.com/npm/npm/issues/9567).
 
+### Wrong path under Electron with Asar enabled
+
+It's a [known issue](https://github.com/electron-userland/electron-packager/issues/740) that Asar breaks native paths. As a workaround, if you use Asar, you can do something like this:
+
+```javascript
+const ffmpegPath = require('@ffmpeg-installer/ffmpeg').path.replace('app.asar', 'app.asar.unpacked');
+```
+
 ## The binaries
 
 Downloaded from the sources listed at [ffmpeg.org](https://ffmpeg.org/download.html):