Hi all, I already know that gstreamer has video editing capabilities because i see that PITIVI use it. I'm studing how to edit videos with gstreamer and i already has a guess - GNonLin plugin - but i decide to ask them if i'll can do what i need and i think here is the best place to discover! Below i say what i need and what i already do. I has a aplication that generates frames for me and i need implement a fixed time size video on memory (no file) - in form of a sliding window. When my app receives a event notification (a mouse click i.e.), they need flush this video to file on disk. 1) implement a pipeline that connect my app and gstreamer (with appsrc plugin); this is OK (tested and validated) 2) implement the video encoding on a give format; this is ok (tested and validated) 3) implement the sliding window; (how to do that? some simple examples? to help me start?) 4) Monitor a evento to flush the sliding window to a file on disk (i already has ideas for this, but tips is always good and welcome!! =) Below is a single sketch to show what i need. video's sliding window on memmory |<----------1min---------->| |<----------1min---------->| |<----------1min---------->| |<----------1min---------->| |<----------1min---------->| |---------------------------------------------------------------------------------------------------> (time) | event | |<---30s--->| video file to disk!! Any help is appreciated. Thanks in advance!!! -- Raul Holanda Cordeiro Celular: +55 (85) 8863-6877 Celular: +55 (85) 8805-3592 Skype: raulhcordeiro -- Raul Holanda Cordeiro Celular: +55 (85) 8863-6877 Celular: +55 (85) 8805-3592 Skype: raulhcordeiro