I am not sure though....You can try "fpsdisplaysink" to measure framerate. <div class="gmail_quote">On Fri, Feb 15, 2013 at 1:10 PM, Baby Octopus <<a href="mailto:jagadishkamathk@gmail.com" target="_blank">jagadishkamathk@gmail.com</a>> wrote: <blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote">Hi, I want to know how is a video framerate calculated in a transport stream(frame rate of video/x-raw which comes out of decodebin) 1. Is it the job of demuxer(tsdemux)?Is it based on dts/pts present in transport PES in such a case? If dts/pts id not present how does it get calculated? 2. Is it the job of videoparse(h264parse)r? 3. Is it the job of video decoder(avdec_h264)? I'm using decodebin which internally is using libav decoders. I have this question because because certain H264 streams have a framerate of 0/1 when they come out of decodebin. I'm not sure why it is happening ~BO -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/How-is-a-video-frame-rate-calculated-in-a-transport-stream-tp4658547.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/How-is-a-video-frame-rate-calculated-in-a-transport-stream-tp4658547.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ 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>