Fix installation on m1 mac

Author: antoineMoPa

binding.gyp

@@ -90,10 +90,12 @@
     }],
     ['OS=="mac"', {
       "include_dirs" : [
-        "/usr/local/Cellar/ffmpeg@5/5.1.3/include/"
+        "/usr/local/Cellar/ffmpeg@5/5.1.3/include/",
+        "/opt/homebrew/Cellar/ffmpeg@5/5.1.3/include/",
       ],
       "library_dirs": [
         "/usr/local/Cellar/ffmpeg@5/5.1.3/lib/",
+        "/opt/homebrew/Cellar/ffmpeg@5/5.1.3/lib/",
       ]
     }],
   ]

install_ffmpeg.js

@@ -185,7 +185,8 @@ async function darwin() {
     output = await exec('brew list ffmpeg@5');
     returnMessage = 'FFmpeg already present via Homebrew.';
   } catch (err) {
-    if (err.stderr !== 'Error: No such keg: /usr/local/Cellar/ffmpeg@5\n') {
+    if (err.stderr.indexOf('Error: No such keg') === -1 &&
+        err.stderr.indexOf('ffmpeg@5') === -1) {
       console.error(err);
       console.log('Either Homebrew is not installed or something else is wrong.\nExiting');
       process.exit(1);