Hi, I am not pro in gstreamer, but the closest solution that comes to my mind is to use appsrc ! decoder ! appsink So you need to have a pipeline but you provide data from your software and you get decoded stream back to your software. I am working now on appsrc solution for my program. <div class="gmail_quote">2011/5/19 kilian stein <<a href="mailto:stein.kilian@gmail.com">stein.kilian@gmail.com</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hello, I'm new to gstreamer and i wonder if it's possible with gstreamer : (1) to put a buffer in a plugin (in a decoder/filter for example) (2) lunch the decode/filter process (only process one plugin) (3) and grab the out buffer The question is, is it possible to use a plugin alone without using the pipeline ? Regards, Kilian _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div> -- Your Sincerely Michal Joachimiak