Hello!

Started here:
https://www.facebook.com/groups/opensuseproject/permalink/10154827002729488/

Tried to play big .mkv (Matroska) file (1.30h concert record) on Totem-player
and in some time got heavy memory leak: system started with 560 RAM, and after
Totem-player is running, memory-count slowly, but continiously raised up to 2G,
and after some time all system RAM and swap were full. But Totem played sound
ok, instead of video-stream (no video-stream). Later this was resolved by
installing gstreamer-plugins-libav
(https://forums.opensuse.org/showthread.php/517478-How-to-force-Totem-player-to-display-video-on-mkv-files).
And memory leak seems to be gone (hope so, still trying to reproduce).

My assumption is: Totem by GStreamer tried to call gstreamer-plugins-libav, got
'false' in response and processed this situation in wrong way, so RAM was
leaked after some time (in 30-40 min experimentally.)

Please, try to reproduce this bug. Thank you!

OS: 42.1, XFCE, ext4 on root partition, xfs in /home.