I am running this command on jetson nano .
gst-launch-1.0 v4l2src device=/dev/video0 io-mode=2 do-timestamp=true ! “image/jpeg,framerate=(fraction)60/1,width=1920,height=1080” ! nvv4l2decoder mjpeg=1 enable-max-performance=1 ! nvvidconv ! ‘video/x-raw(memory:NVMM), format=(string)I420, framerate=(fraction)60/1’ ! videorate ! ‘video/x-raw(memory:NVMM),framerate=(fraction)60/1’ ! nvvidconv ! ‘video/x-raw, format=(string)I420’ ! videoconvert ! “video/x-raw, format=I420, width=1920, height=1080” ! identity drop-allocation=true ! tee ! v4l2sink device=/dev/video4
here : /dev/video0 is my usb3.0 camera ; /dev/video4 is my v4l2loopback device
getting the following error :
Setting pipeline to PAUSED …
Opening in BLOCKING MODE
libv4l2: error getting pixformat: Invalid argument
Opening in BLOCKING MODE
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
NvMMLiteOpen : Block : BlockType = 277
NVMEDIA: Reading vendor.tegra.display-size : status: 6
NvMMLiteBlockCreate : Block : BlockType = 277
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming stopped, reason not-negotiated (-4)
Execution ended after 0:00:00.273282927
Setting pipeline to PAUSED …
Setting pipeline to READY …
Setting pipeline to NULL …
Freeing pipeline …
But when running this command :
gst-launch-1.0 v4l2src device=/dev/video0 io-mode=2 do-timestamp=true ! “image/jpeg,framerate=(fraction)60/1,width=1920,height=1080” ! nvv4l2decoder mjpeg=1 enable-max-performance=1 ! nvvidconv ! ‘video/x-raw(memory:NVMM), format=(string)I420, framerate=(fraction)60/1’ ! videorate ! ‘video/x-raw(memory:NVMM),framerate=(fraction)60/1’ ! nvvidconv ! ‘video/x-raw, format=(string)I420’ ! videoconvert ! “video/x-raw, format=I420, width=1920, height=1080” ! identity drop-allocation=true ! tee ! fakesink
this works.
that means it is issue with v4l2loopback … pls help