This question is related to "Chapter 14. Clocks and synchronization in GStreamer" [1] as the reading of it confuses me more than it helps. So.. Should I do anything for such a pipeline ? Thanks. Cédric P.-S. I'd love to read some documentation on this topic. [1] http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-clocks.html