you mean the buffer pushed by filesrc is 8 bytes ? As IMHO h264parse pushes one NALU for every buffer, so there might be an issue with your decoder ? -kapil <div class="gmail_quote">On Tue, Mar 30, 2010 at 9:20 PM, ericcardmanNo3 <<a href="mailto:daniel.kuhne@yahoo.de">daniel.kuhne@yahoo.de</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> hi! i do: gst-launch filesrc location=my.264 ! h264parse ! myh264decoder ! ffmpegcolorspace ! fbdevsink the filesrc passes buffers of 4096 byte to h264parse. h264parse passes a 23 byte buffer to myh264decoder where i decode to get stream configuration - works. But next buffer is 8 byte and i cant push the decoded buffer to downstream. 0:00:01.265381034 1526 0x7b388 DEBUG h264parse gsth264parse.c:956:gst_h264_parse_sink_event:<h264parse0> Pushing newseg rate 1, applied rate 1, format 2, start 0, stop 3041866, pos 0 0:00:01.268311470 1526 0x7b388 DEBUG h264parse gsth264parse.c:897:gst_h264_parse_chain:<h264parse0> received buffer of size 4096 0:00:01.269130929 1526 0x7b388 DEBUG h264parse gsth264parse.c:499:gst_h264_parse_chain_forward:<h264parse0> NAL type: 7, ref_idc: 1 0:00:01.269879079 1526 0x7b388 DEBUG h264parse gsth264parse.c:540:gst_h264_parse_chain_forward:<h264parse0> we have a SPS or PPS NAL 0:00:01.270759876 1526 0x7b388 DEBUG h264parse gsth264parse.c:553:gst_h264_parse_chain_forward:<h264parse0> pushing buffer 0x432c0, size 23, ts 0:00:00.000000000 -- View this message in context: <a href="http://n4.nabble.com/h264parse-srcpad-buffers-NAL-SPS-PPS-experts-needed-tp1745406p1745406.html" target="_blank">http://n4.nabble.com/h264parse-srcpad-buffers-NAL-SPS-PPS-experts-needed-tp1745406p1745406.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Download Intel&#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. <a href="http://p.sf.net/sfu/intel-sw-dev" target="_blank">http://p.sf.net/sfu/intel-sw-dev</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div> -- <a href="http://www.linkedin.com/in/kapilagrawal">http://www.linkedin.com/in/kapilagrawal</a>