Quoting paths in case of special chars, close #31

audiogram/combine-frames.js

 
   // Raw ffmpeg command with standard mp4 setup
   // Some old versions of ffmpeg require -strict for the aac codec
-  var cmd = "ffmpeg -r " + options.framesPerSecond + " -i " + options.framePath + " -i " + options.audioPath + " -c:v libx264 -c:a aac -strict experimental -shortest -pix_fmt yuv420p " + options.videoPath;
+  var cmd = "ffmpeg -r " + options.framesPerSecond + " -i \"" + options.framePath + "\" -i \"" + options.audioPath + "\" -c:v libx264 -c:a aac -strict experimental -shortest -pix_fmt yuv420p \"" + options.videoPath + "\"";
 
   exec(cmd, cb);
 

audiogram/trim.js

 
   }
 
-  var cmd = "ffmpeg -i " + options.origin + " -ss " + (options.startTime || 0) + " -t " + (options.endTime - options.startTime) + " -acodec libmp3lame -b:a 128k " + options.destination;
+  var cmd = "ffmpeg -i \"" + options.origin + "\" -ss " + (options.startTime || 0) + " -t " + (options.endTime - options.startTime) + " -acodec libmp3lame -b:a 128k \"" + options.destination + "\"";
 
   exec(cmd, cb);