Gstreamer, v4l2src: GST_V4L2SRC_MAX_RESOLUTION

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

i have second problem. i have mipi-camera with default resolution 4056x3040. try pipeline:
gst-launch-1.0 -v v4l2src device=/dev/video11 ! videoconvert ! fpsdisplaysink text-overlay=false sync=false
is ok, but resolution is 3840x2160:

gst-launch-1.0 -vvv v4l2src device=/dev/video11 ! videoconvert ! fpsdisplaysink text-overlay=false sync=false
Setting pipeline to PAUSED ...
Using mplane plugin for capture
libv4l2: error getting pixformat: Invalid argument
Pipeline is live and does not need PREROLL ...
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstAutoVideoSink:fps-display-video_sink/GstXvImageSink:fps-display-video_sink-actual-sink-xvimage: sync = false
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw, format=(string)NV12, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, colorimetry=(string)1:3:5:1
/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps = video/x-raw, format=(string)NV12, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, colorimetry=(string)1:3:5:1
**

i try change variable GST_V4L2SRC_MAX_RESOLUTION to 4056x3040 but nothing happens.
how i can start current pipeline with resolution 4056x3040? is i need to fix camera driver? or fix gstremer?
PS. pipeline is working ok:
gst-launch-1.0 -v v4l2src device=/dev/video11 ! video/x-raw,width=4056,height=3040 ! videoconvert ! fpsdisplaysink text-overlay=false sync=false
thanks !

3

Hi,
Please run the command and share the prints for reference:

$ v4l2-ctl -d /dev/video11 --list-formats-ext

Not sure but probably the caps is not set exactly fitting the sensor mode.

4

it is ok, i saw in “dmesg” what resolution is set to 4056x3040.
–list-formats-ext:

v4l2-ctl -d /dev/video11 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
Type: Video Capture Multiplanar

    [0]: 'UYVY' (UYVY 4:2:2)
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
    [1]: 'NV16' (Y/CbCr 4:2:2)
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
    [2]: 'NV61' (Y/CrCb 4:2:2)
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
    [3]: 'NV21' (Y/CrCb 4:2:0)
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
    [4]: 'NV12' (Y/CbCr 4:2:0)
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
    [5]: 'NM21' (Y/CrCb 4:2:0 (N-C))
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
    [6]: 'NM12' (Y/CbCr 4:2:0 (N-C))
            Size: Stepwise 32x32 - 4048x3040 with step 8/8
5

Hi,
Please try

$ gst-launch-1.0 -v v4l2src device=/dev/video11 ! video/x-raw,width=4048,height=3040,format=UYVY ! videoconvert ! fpsdisplaysink text-overlay=false video-sink=fakesink sync=false
6

yes, it work. i writing it in 1st post omg. how can i change default resolution that will be not 3840x2160 but 4056x3040? is a need to fix gstreamer?

7

Hi,
Selecting 3840x2160 seems to be default behavior. We are uncertain how to change it. You may go to gstreamer community to get suggestion:
https://discourse.gstreamer.org/

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9

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