Play V4l2 video source on framebuffer

jamesM JamesMartin_2000 at
Wed Mar 31 20:08:05 UTC 2021

I installed Ubuntu server 20.04 (without GUI) on my desktop PC and also
installed video capture card on my PC.
i wanna play real time Pal camera frame(720*576 )on framebuffer but i cant 

>>v4l2-ctl --all
Driver Info:
	Driver name      : tw686x
	Card type        : tw6864
	Bus info         : PCI:0000:01:00.0
	Driver version   : 5.4.94
	Capabilities     : 0x85200001
		Video Capture
		Extended Pix Format
		Device Capabilities
	Device Caps      : 0x05200001
		Video Capture
		Extended Pix Format
Priority: 2
Video input : 0 (Composite0: ok)
Video Standard = 0x0000b000
Format Video Capture:
	Width/Height      : 720/480
	Pixel Format      : 'UYVY' (UYVY 4:2:2)
	Field             : Interlaced
	Bytes per Line    : 1440
	Size Image        : 691200
	Colorspace        : SMPTE 170M
	Transfer Function : Default (maps to Rec. 709)
	YCbCr/HSV Encoding: Default (maps to ITU-R 601)
	Quantization      : Default (maps to Limited Range)
	Flags             : 
Streaming Parameters Video Capture:
	Capabilities     : timeperframe
	Frames per second: 30.000 (30/1)
	Read buffers     : 3

User Controls

                     brightness 0x00980900 (int)    : min=-128 max=127
step=1 default=0 value=0 flags=slider
                       contrast 0x00980901 (int)    : min=0 max=255 step=1
default=100 value=100 flags=slider
                     saturation 0x00980902 (int)    : min=0 max=255 step=1
default=128 value=128 flags=slider
                            hue 0x00980903 (int)    : min=-128 max=127
step=1 default=0 value=0 flags=slider

>>gst-launch-1.0 v4l2src device="/dev/video0" !
"video/x-raw,width=640,height=576,format=(string)YUY2" !

 WARNING:errorneous pipeline:could not link v4l2src0 to fbdevsink0 ,
fbdevsink0 cant handle

It seems gstreamer pipeline need some filters  would you please help me what
kind of filters should i use?

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