[svn r457] added check != NULL before g_string_free to avoid GLib Critical warnings
3 gst-launch-0.10 filesrc location=sample1_divx.nuv ! ffdemux_nuv name=nuvdemux nuvdemux.video_00 ! queue ! ffdec_mpeg4 ! xvimagesink sync=false nuvdemux.audio_00 ! queue ! ffdec_mp3 ! audioconvert ! alsasink sync=false 2>&1