How to rescale of the IPU using GStreamer

[gavingreenwalt]

I'm trying to resize a video feed but I'm getting an error.

mfw_v4lsrc device=/dev/video0 ! \

mfw_ipucsc ! \

'video/x-raw-yuv, width=100, height=100' ! \

vpuenc codec=mjpg ! \

tcpclientsink host=192.168.1.2 port=910 sync=false

But when I run my launch with width=100, height=100 added I get this error.

ERROR: from element /GstPipeline:pipeline0/MFWGstV4LSrc:mfwgstv4lsrc0: Internal data flow error.

Reason not-negotiate....(-4)

I tried adding (int) in front of the width and height but to no avail.

[Yuri]

  Please check, using gst-inspect, if  "mfw_ipucsc" element is present and has
all the needed properties (width, height).

Have a great day,
Yuri

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[gavingreenwalt]

I have mfw_ipucsc as you can see in my pipeline example in my original question.   How do I format width and height to have mfw_ipucsc reszie?   Thanks!

I tried changing the caps to 'video/x-raw-yuv, width=640, height=480' but then it stops working with 'Got EOS from element pipeline0".  If I restore it to 1280x720 (the input resolution) it returns to normal operation.   So how do I tel the ipucsc to actually change the scale?

[Yuri]

Please let me know result of the following command :

$ gst-inspect mfw_ipucsc

Regards,

Yuri.

[gavingreenwalt]

I found the solution.  You need caps on on either side of mfw_ipucsc not just after.   So this works:

mfw_v4lsrc device=/dev/video0 ! \

'video/x-raw-yuv, width=1280, height=720' ! \

mfw_ipucsc ! \

'video/x-raw-yuv, width=100, height=100' ! \

vpuenc codec=mjpg ! \

tcpclientsink host=192.168.1.2 port=910 sync=false

[nagendrasarma]

yes, you are right Gavin,

i do have same issue and solved by adding caps before mfw_ipucsc, but i have one more requirement is

to change the mfw_ipucsc output dynamically, i am using the gstreamer call " gst_element_link_filtered ()" and working file initially.

but i if try to change caps (after pausing pipeline) and again try to link, not working. can anybody help me ?

the actual requirement is         _______ the output of scale can be variable

                                               /

videosrc(1080p awlays) ---> scale -----> vpuenc

regards

nagendra