Trying to use playbin with external subtitles crashes for me with CVS:

 gst-launch-0.10 playbin uri=file:///path/foo.avi  suburi=file:///path/foo.srt

in queue_threshold_reached() because get_active_group() returns NULL.

Everything works fine if I add a simple if(!group)return , but that doesn't look like the right solution.

I wonder if queue_threshold_reached() should have been called at all given that group_commit() has already been called via no_more_pads_full() from new_decoded_pad_full().

I also wonder if queue_threshold_reached() shouldn't take the group lock before calling _get_active_group()?