why appsrc can not be linked directly to qtdemux?

[Ugly Face]

I linked filesrc directly to qtdemux to play mp4 file . but when I use
appsrc, It does not work any more. should I add some elements between them?

By the way , if  I want to push raw H264 data(NALU) to appsrc, how can I set
the caps of appsrc properly?
would this work?
caps = gst_caps_new_simple ("video/x-h264",
    			"framerate", GST_TYPE_FRACTION, 15, 1,
    			"width", G_TYPE_INT, PIC_WIDTH,
    			"height", G_TYPE_INT, PIC_HEIGHT,
    			NULL);



--
View this message in context: http://gstreamer-devel.966125.n4.nabble.com/why-appsrc-can-not-be-linked-directly-to-qtdemux-tp4665548.html
Sent from the GStreamer-devel mailing list archive at Nabble.com.