subparse: GStreamer-CRITICAL print log when do fast backward

Submitted by Mingke Wang

Created attachment 324235
create new seek event with rate=1 for seeking

subparse will cause following printing when do fast backward:
GStreamer-CRITICAL **: gst_segment_to_running_time_full: assertion 'stop != -1' failed

since subparse alwasy seek to the beginning start, so creating the new seek event with rate=1 will solve this problem

Patch 324235, "create new seek event with rate=1 for seeking":
0001-subparse-GStreamer-CRITICAL-print-log-when-do-fast-b.patch

Version: 1.6.0