Cannot capture with v4l2src

[mdegans]

For integration into an existing pipline, it's easier for me to use v4l2src instead of the argus source, but I can't manage to get it to negotiate caps.

gst-launch-1.0 nvarguscamerasrc ! autovideosink

works

gst-launch-1.0 v4l2src ! fakesink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
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)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

No matter what I try, I can't get v4l2src to work.

formats supported by v4l2:

$ v4l2-ctl -D --list-formats-ext -d /dev/video0 
Driver Info (not using libv4l2):
        Driver name   : tegra-video
        Card type     : vi-output, imx477 7-001a
        Bus info      : platform:54080000.vi:0
        Driver version: 4.9.140
        Capabilities  : 0x84200001
                Video Capture
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps   : 0x04200001
                Video Capture
                Streaming
                Extended Pix Format
ioctl: VIDIOC_ENUM_FMT
        Index       : 0
        Type        : Video Capture
        Pixel Format: 'RG10'
        Name        : 10-bit Bayer RGRG/GBGB
                Size: Discrete 4032x3040
                        Interval: Discrete 0.033s (30.000 fps)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.017s (60.000 fps)

Would this be related to #19 in which case I must patch v4l2src itself?

[mdegans]

i see it is likely related, since the issue exists with other csi sources of the same format. thanks for the helpful wiki