How to get framerate of video?

ms congvt0201 at
Tue Mar 6 02:44:54 PST 2012

I'm newbie in Gstreamer, I have some questions:
+ How to get *framerate* of video from *GstCaps*
+ I have injected data into  appsrc which is set max size to 65536. I wanna
get percentage of buffer used. when i use gst_app_src_get_size function, it
returned -1. How to get size of buffer used?
Please suggest for me, thank so much!

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