SK-AM62P-LP: Problems with gst-launch-1.0

Sergio Rossi

Part Number: SK-AM62P-LP

Tool/software:

Hi,

We're facing some difficulties with our video pipeline.

we set video format using " v4l2-ctl -d /dev/video3 --set-fmt-video=width=1280,height=720,pixelformat=UYVY " command, but when we run the pipeline as " gst-launch-1.0 -v v4l2src device=/dev/video3 ! videoconvert ! autovideosink " it overwrites our previous configuration, as show bellow in the example.

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root@am62pxx-evm:~# v4l2-ctl -d /dev/video3 --set-fmt-video=width=1280,height=720,pixelformat=UYVY
root@am62pxx-evm:~# v4l2-ctl -d /dev/video3 --get-fmt-video
Format Video Capture:
    Width/Height      : 1280/720
    Pixel Format      : 'UYVY' (UYVY 4:2:2)
    Field             : None
    Bytes per Line    : 2560
    Size Image        : 1843200
    Colorspace        : Rec. 709
    Transfer Function : Rec. 709
    YCbCr/HSV Encoding: Rec. 709
    Quantization      : Limited Range
    Flags             : 
root@am62pxx-evm:~# gst-launch-1.0 -v v4l2src device=/dev/video3 ! videoconvert ! autovideosink
Setting pipeline to PAUSED ...
warning: queue 0xffff8c000be0 destroyed while proxies still attached:
  xdg_wm_base@7 still attached
  wl_seat@6 still attached
  wl_subcompositor@5 still attached
  wl_compositor@4 still attached
  wl_registry@2 still attached
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

root@am62pxx-evm:~# v4l2-ctl -d /dev/video3 --set-fmt-video=width=1280,height=720,pixelformat=UYVY
root@am62pxx-evm:~# v4l2-ctl -d /dev/video3 --get-fmt-video
Format Video Capture:
	Width/Height      : 1280/720
	Pixel Format      : 'UYVY' (UYVY 4:2:2)
	Field             : None
	Bytes per Line    : 2560
	Size Image        : 1843200
	Colorspace        : Rec. 709
	Transfer Function : Rec. 709
	YCbCr/HSV Encoding: Rec. 709
	Quantization      : Limited Range
	Flags             : 
root@am62pxx-evm:~# gst-launch-1.0 -v v4l2src device=/dev/video3 ! videoconvert ! autovideosink
Setting pipeline to PAUSED ...
warning: queue 0xffff8c000be0 destroyed while proxies still attached:
  xdg_wm_base@7 still attached
  wl_seat@6 still attached
  wl_subcompositor@5 still attached
  wl_compositor@4 still attached
  wl_registry@2 still attached
Pipeline is live and does not need PREROLL ...
Got context from element 'autovideosink0': gst.gl.GLDisplay=context, gst.gl.GLDisplay=(GstGLDisplay)"\(GstGLDisplayWayland\)\ gldisplaywayland0";
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, format=(string)YVYU, interlace-mode=(string)progressive, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)Y42B, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)Y42B, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage.GstGhostPad:sink.GstProxyPad:proxypad1: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)Y42B, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLUploadElement:gluploadelement0.GstPad:src: caps = video/x-raw(memory:GLMemory), width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)RGBA, texture-target=(string)2D
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLColorConvertElement:glcolorconvertelement0.GstPad:src: caps = video/x-raw(memory:GLMemory), width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)RGBA, texture-target=(string)2D
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLColorBalance:glcolorbalance0.GstPad:src: caps = video/x-raw(memory:GLMemory), width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)RGBA, texture-target=(string)2D
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLImageSink:sink.GstPad:sink: caps = video/x-raw(memory:GLMemory), width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)RGBA, texture-target=(string)2D
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLColorBalance:glcolorbalance0.GstPad:sink: caps = video/x-raw(memory:GLMemory), width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)RGBA, texture-target=(string)2D
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLColorConvertElement:glcolorconvertelement0.GstPad:sink: caps = video/x-raw(memory:GLMemory), width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)RGBA, texture-target=(string)2D
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage/GstGLUploadElement:gluploadelement0.GstPad:sink: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)Y42B, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstGLImageSinkBin:autovideosink0-actual-sink-glimage.GstGhostPad:sink: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)Y42B, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, interlace-mode=(string)progressive, format=(string)Y42B, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:sink: caps = video/x-raw, width=(int)3840, height=(int)2160, framerate=(fraction)120/1, format=(string)YVYU, interlace-mode=(string)progressive, colorimetry=(string)bt709
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Failed to allocate required memory.
Additional debug info:
/usr/src/debug/gstreamer1.0-plugins-good/1.22.12/sys/v4l2/gstv4l2src.c(950): gst_v4l2src_decide_allocation (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
Buffer pool activation failed
Execution ended after 0:00:00.061778235
Setting pipeline to NULL ...
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
Additional debug info:
/usr/src/debug/gstreamer1.0/1.22.12/libs/gst/base/gstbasesrc.c(3134): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming stopped, reason not-negotiated (-4)
warning: queue 0xffff8c04fd30 destroyed while proxies still attached:
  xdg_wm_base@13 still attached
  wl_seat@12 still attached
  wl_subcompositor@8 still attached
  wl_compositor@11 still attached
  wl_registry@14 still attached
Freeing pipeline ...
root@am62pxx-evm:~# v4l2-ctl -d /dev/video3 --get-fmt-video
Format Video Capture:
	Width/Height      : 3840/2160
	Pixel Format      : 'YVYU' (YVYU 4:2:2)
	Field             : None
	Bytes per Line    : 7680
	Size Image        : 16588800
	Colorspace        : Rec. 709
	Transfer Function : Rec. 709
	YCbCr/HSV Encoding: Rec. 709
	Quantization      : Limited Range
	Flags             :

Is there a specific reason for that?

Best Regards,

Sergio

4 days ago

0 Jianzhong Xu 4 days ago

TI__Guru 52575 points

Hello Sergio,

I believe gst-launch-1.0 changed the format of the video device node. If you do the following,

gst-launch-1.0 v4l2src device=/dev/video3 ! video/x-raw, width=1280, height=720,format=UYVY

I believe you should have the same format as set by the v4l2-ctl command.

Regards,

Jianzhong

0 Sergio Rossi 1 day ago in reply to Jianzhong Xu

Intellectual 255 points

Hello Jianzhong,

Yes you are correct, but we're using a Qt application to control the camera, and qt pipeline uses something near that pipeline.

"gst-launch-1.0 v4l2src device=/dev/video3 ! autovideosink"

so every time that we ran the program it reconfigure video format. Do you know any way to prevent that from happening?

Regards,

0 Jianzhong Xu 16 hours ago in reply to Sergio Rossi

TI__Guru 52575 points

Can you try to use "media-ctl" to set the format? For example github.com/.../setup_camera_ox05b.sh

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SK-AM62P-LP: Problems with gst-launch-1.0