I don't know why, but the error has gone away if I run receiver before sender. -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/tsdemux-ffec-h264-ffmpeg-0-non-existing-PPS-referenced-tp4665890p4665903.html Sent from the GStreamer-devel mailing list archive at Nabble.com.