- Command.dump can now output commands pastable into sh

- Command no longer leaves zombies everywhere and exports process return codes
- fixed --audio copy/--video copy - it actually copies streams now
- files with a colon in their names can be processed now
- files with multiple audio streams are sort of handled
- halt when ffmpeg returns an error

aux.py

@@ -63,7 +63,7 @@ class Command:
 		self.__dict__["fifo"] = None
 		self.__dict__["terminated"] = False
 	
-	def dump(self, sequence=None):
+	def dump(self, sequence=None, pretty=False):
 		out = []
 		
 		if not sequence:
@@ -77,7 +77,10 @@ class Command:
 			elif item is not None:
 				out.append(str(item))
 		
-		return out
+		if pretty:
+			return [('"%s"' %(a) if ' ' in a else a) for a in out]
+		else:
+			return out
 	
 	def run(self, stderr=False):
 		"""
@@ -118,6 +121,7 @@ class Command:
 		
 		if None in buffer:
 			self.__dict__["terminated"] = True
+			self.__dict__["returncode"] = self.process.poll()
 			
 			if len(buffer) == 1:
 				return None