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run Gstreamer on TVP5158 + DM6467t

Other Parts Discussed in Thread: TVP5158

Dear All,

I am working on gstreamer on DM6467t and TVP5158 board

According http://processors.wiki.ti.com/index.php?title=Example_GStreamer_Pipelines#DM6467T

I can let gstreamer run decode+display, althorugh the color is not currect.

But I can't let gstreamer run capture+encode+rtp. the following is the command I type.

gst-launch -v v4l2src always-copy=FALSE ! TIVidenc1 codecName=h264enc engineName=encode contiguousInputFrame=TRUE ! rtph264pay pt=96 ! udpsink host=<HOST_PC_IP> port=5000
the error message are in the following
============================================================
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not negoti
ate format
Additional debug info:
gstbasesrc.c(2584): gst_base_src_start (): /GstPipeline:pipeline0/GstV4l2Src:v4l
2src0:
Check your filtered caps, if any
Setting pipeline to NULL ...
Freeing pipeline ...
============================================================
I guess the code is default to use TVP7002. So it can't run TVP5158 normally.
Can Somebody help me out? 
Any suggestion is welcome.
Thanks a lot.
Rock