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Negotiation problem in v4l2src

AnonymousContent
Expert 4605 points 
I want to capture and encode the video in omap35x platform. 

I am trying the following pipeline 

gst-launch -v v4l2src always-copy=FALSE num-buffers=2000 ! TIVidenc1 codecName=mpeg4enc engineName=encode contiguousInputFrame=TRUE ! filesink location=sample.m4v

I am facing the following error

Setting pipeline to PAUSED ...

(gst-launch-0.10:1336): GStreamer-WARNING **: pad v4l2src0:src returned caps which are not a real subset of its template caps
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not negotiate format
Additional debug info:
gstbasesrc.c(2719): gst_base_src_start (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
Check your filtered caps, if any
Setting pipeline to NULL ...
Freeing pipeline ...

Please suggest if I am doing any mistake.
  • 0
    TI__Expert 5680 points

    Hello,

    Looks like your video capture source does not support UYVY format needed by TIVidenc1 element, try adding "ffmpegcolorspace" element in your pipeline to see if that helps

    gst-launch -v v4l2src num-buffers=2000 always-copy=FALSE ! ffmpegcolorspace ! 'video/x-raw-yuv,format=(fourcc)UYVY' ! TIVidenc1 codecName=mpeg4enc engineName=encode ! filesink location=sample.m4v

    Also looks like you are using very old gstreamer or dvsdk release and i would suggest moving to latest version.

    Thanks

    Brijesh