Playing this particular mpeg2 video clip attached at here, the gstreamer player stuck in the last 3rd frame of end of video for around 5 mins to 8 mins there only exit. Don't see this issue using mplayer Fedora18 or play this video clip on windows media player windows 7.

I try using both command pipeline in software & hardware decode also see same issue:
1.)gst-launch-1.0 -v filesrc location=auto.m2v ! mpegvideoparse ! vaapidecode ! vaapsink
2.)gst-launch-1.0 -v filesrc location=auto.m2v ! mpegvideoparse ! mpeg2dec ! xvimagesink

Just pure run this command pipeline:
gst-launch-1.0 -v filesrc location=auto.m2v ! mpegvideoparse ! fakesink

Put in my own debug message & count in gst_mpegv_parse_handle_frame function.
This consistent start happend at that function count number: 8564
GstMpegVideoPacket packet retrieve from gst_mpeg_video_parse
-> packet.size = 0 until the end
-> packet.offset = a bit weird....

gstbuffer.c:635:gst_buffer_new_allocate:[00m new buffer 0xb613b8c0 of size 196608 from allocator (nil)

And you can see the new buffer size keep increasing....until drain out then only exit the gstreamer.

Not able to find other demuxer to replace mpegvideoparse to checkout whether is really demuxer problem or the video clip issue. 

Run this in Fedora 18 system.