diff --git a/src/you_get/processor/ffmpeg.py b/src/you_get/processor/ffmpeg.py
index 50172071..0d6c309a 100644
--- a/src/you_get/processor/ffmpeg.py
+++ b/src/you_get/processor/ffmpeg.py
@@ -3,21 +3,25 @@
 import os.path
 import subprocess
 
-def has_ffmpeg_installed():
+def get_usable_ffmpeg(cmd):
     try:
-        p = subprocess.Popen(['ffmpeg', '-version'], stdout=subprocess.PIPE)
+        p = subprocess.Popen([cmd, '-version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         out, err = p.communicate()
-        import re
-        assert re.search('Libav', str(out, 'utf-8').split('\n')[0]) is None
+        vers = str(out, 'utf-8').split('\n')[0].split(' ')
+        assert (vers[0] == 'ffmpeg' and vers[2][0] > '0') or (vers[0] == 'avconv')
+        return cmd
     except:
-        return False
-    else:
-        return True
+        return None
+
+FFMPEG = get_usable_ffmpeg('ffmpeg') or get_usable_ffmpeg('avconv')
+
+def has_ffmpeg_installed():
+    return FFMPEG is not None
 
 def ffmpeg_convert_ts_to_mkv(files, output = 'output.mkv'):
     for file in files:
         if os.path.isfile(file):
-            params = ['ffmpeg', '-i']
+            params = [FFMPEG, '-i']
             params.append(file)
             params.append(output)
             subprocess.call(params)
@@ -27,7 +31,7 @@ def ffmpeg_convert_ts_to_mkv(files, output = 'output.mkv'):
 def ffmpeg_concat_mp4_to_mpg(files, output = 'output.mpg'):
     for file in files:
         if os.path.isfile(file):
-            params = ['ffmpeg', '-i']
+            params = [FFMPEG, '-i']
             params.append(file)
             params.append(file + '.mpg')
             subprocess.call(params)
@@ -37,7 +41,7 @@ def ffmpeg_concat_mp4_to_mpg(files, output = 'output.mpg'):
         for input in inputs:
             o.write(input.read())
     
-    params = ['ffmpeg', '-i']
+    params = [FFMPEG, '-i']
     params.append(output + '.mpg')
     params += ['-vcodec', 'copy', '-acodec', 'copy']
     params.append(output)
@@ -50,7 +54,7 @@ def ffmpeg_concat_mp4_to_mpg(files, output = 'output.mpg'):
     return
 
 def ffmpeg_concat_ts_to_mkv(files, output = 'output.mkv'):
-    params = ['ffmpeg', '-isync', '-i']
+    params = [FFMPEG, '-isync', '-i']
     params.append('concat:')
     for file in files:
         if os.path.isfile(file):
@@ -68,20 +72,23 @@ def ffmpeg_concat_ts_to_mkv(files, output = 'output.mkv'):
 def ffmpeg_concat_flv_to_mp4(files, output = 'output.mp4'):
     for file in files:
         if os.path.isfile(file):
-            params = ['ffmpeg', '-i']
+            params = [FFMPEG, '-i']
             params.append(file)
             params += ['-map', '0', '-c', 'copy', '-f', 'mpegts', '-bsf:v', 'h264_mp4toannexb']
             params.append(file + '.ts')
             
             subprocess.call(params)
     
-    params = ['ffmpeg', '-i']
+    params = [FFMPEG, '-i']
     params.append('concat:')
     for file in files:
         f = file + '.ts'
         if os.path.isfile(f):
             params[-1] += f + '|'
-    params += ['-c', 'copy', '-absf', 'aac_adtstoasc', output]
+    if FFMPEG == 'avconv':
+        params += ['-c', 'copy', output]
+    else:
+        params += ['-c', 'copy', '-absf', 'aac_adtstoasc', output]
     
     if subprocess.call(params) == 0:
         for file in files: