<div class="gmail_quote">On Tue, May 18, 2010 at 1:31 PM, Hunterwood <<a href="mailto:markus.jagerskogh@imentum.se">markus.jagerskogh@imentum.se</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> To isolate the problem with the caps, the code just passes on the incomming buffer (just as the gst-template, which I used as base), and the interresting parts of the encoder looks like this (I have omited gst_gtestenc_class_init and parts of gst_gtestenc_base_init bellow): </blockquote><div> </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> static GstFlowReturn gst_gtestenc_chain (GstPad * pad, GstBuffer * buf) { Gstgtestenc *filter; filter = GST_GtestENC (GST_OBJECT_PARENT (pad)); /* just push out the incoming buffer without touching it */ return gst_pad_push (filter->srcpad, buf); } </blockquote><div> Are you setting the proper caps/type on the buffer itself? <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#gst-buffer-set-caps">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#gst-buffer-set-caps</a> Imho you're passing a buffer incompatible with the pad caps. Regards </div></div>