diff --git a/moviepy/video/io/ffmpeg_tools.py b/moviepy/video/io/ffmpeg_tools.py
index 523172f16..644a3ad74 100644
--- a/moviepy/video/io/ffmpeg_tools.py
+++ b/moviepy/video/io/ffmpeg_tools.py
@@ -36,7 +36,7 @@ def ffmpeg_extract_subclip(filename, t1, t2, targetname=None):
            "-ss", "%0.2f"%t1,
            "-i", filename,
            "-t", "%0.2f"%(t2-t1),
-           "-vcodec", "copy", "-acodec", "copy", targetname]
+           "-map", "0", "-vcodec", "copy", "-acodec", "copy", targetname]
     
     subprocess_call(cmd)