No preview is shown with nvgstcapture-1.0

midterm07 · May 11, 2021, 2:09pm

I am using nvgstcapture-1.0 for recording videos. My camera is Raspberry Pi HQ (IMX477) camera and I am able to record videos up to 4K@30Hz with nvgstcapture-1.0. However, I am not able to see any preview of the video on the screen. On the other hand, when working with gstreamer I am able to see the video on my screen. Here is the output:

GST_ARGUS: 2592 x 1944 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 22.250000; Exposure Range min 13000, max 683709000;

GST_ARGUS: 2560 x 1440 FR = 40.000000 fps Duration = 25000000 ; Analog Gain range min 1.000000, max 22.250000; Exposure Range min 13000, max 683709000;

GST_ARGUS: Running with following settings:
Camera index = 0
Camera mode = 1
Output Stream W = 1920 H = 1080
seconds to Run = 0
Frame Rate = 59.999999
GST_ARGUS: Setup Complete, Starting captures for 0 seconds
GST_ARGUS: Starting repeat capture requests.
CONSUMER: Producer has connected; continuing.
gpcr
w = 640, h = 480

ShaneCCC · May 12, 2021, 3:41am

Didn’t you integrate the driver and device tree to the system?

What’s the output for v4l2-ctl -all and v4l2-ctl --list-formats-ext

midterm07 · May 12, 2021, 7:35am

v4l2-ctl --all:

Driver Info (not using libv4l2):
Driver name : tegra-video
Card type : vi-output, imx477 8-001a
Bus info : platform:54080000.vi:4
Driver version: 4.9.201
Capabilities : 0x84200001
Video Capture
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04200001
Video Capture
Streaming
Extended Pix Format
Priority: 2
Video input : 0 (Camera 4: no power)
Format Video Capture:
Width/Height : 1920/1080
Pixel Format : ‘RG10’
Field : None
Bytes per Line : 3840
Size Image : 4147200
Colorspace : sRGB
Transfer Function : Default (maps to sRGB)
YCbCr/HSV Encoding: Default (maps to ITU-R 601)
Quantization : Default (maps to Full Range)
Flags :

Camera Controls
                 group_hold 0x009a2003 (bool)   : default=0 value=0 flags=execute-on-write
                sensor_mode 0x009a2008 (int64)  : min=0 max=0 step=0 default=0 value=1 flags=slider
                       gain 0x009a2009 (int64)  : min=0 max=0 step=0 default=0 value=16 flags=slider
                   exposure 0x009a200a (int64)  : min=0 max=0 step=0 default=0 value=23871 flags=slider
                 frame_rate 0x009a200b (int64)  : min=0 max=0 step=0 default=0 value=30000001 flags=slider
                bypass_mode 0x009a2064 (intmenu): min=0 max=1 default=0 value=1
            override_enable 0x009a2065 (intmenu): min=0 max=1 default=0 value=1
               height_align 0x009a2066 (int)    : min=1 max=16 step=1 default=1 value=1
                 size_align 0x009a2067 (intmenu): min=0 max=2 default=0 value=0
           write_isp_format 0x009a2068 (bool)   : default=0 value=0
   sensor_signal_properties 0x009a2069 (u32)    : min=0 max=0 step=0 default=0 flags=read-only, has-payload
    sensor_image_properties 0x009a206a (u32)    : min=0 max=0 step=0 default=0 flags=read-only, has-payload
  sensor_control_properties 0x009a206b (u32)    : min=0 max=0 step=0 default=0 flags=read-only, has-payload
          sensor_dv_timings 0x009a206c (u32)    : min=0 max=0 step=0 default=0 flags=read-only, has-payload
           low_latency_mode 0x009a206d (bool)   : default=0 value=0
           preferred_stride 0x009a206e (int)    : min=0 max=65535 step=1 default=0 value=0
               sensor_modes 0x009a2082 (int)    : min=0 max=30 step=1 default=30 value=4 flags=read-only

v4l2-ctl --list-formats-ext:

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)
		Size: Discrete 2592x1944
			Interval: Discrete 0.033s (30.000 fps)
		Size: Discrete 2560x1440
			Interval: Discrete 0.025s (40.000 fps)

ShaneCCC · May 12, 2021, 8:21am

What about below command.

export DISPLAY=:0
gst-launch-1.0 nvarguscamerasrc ! "video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080,format=(string)NV12" ! nvvidconv ! xvimagesink sync=false

midterm07 · May 12, 2021, 8:35am

There is a redundant comma after NV12 (corrected). Other than that it works and I am able to see the stream.

ShaneCCC · May 12, 2021, 9:02am

OK, maybe you can try to configure the same resolution for nvgstcapture-1.0 to try.

midterm07 · May 12, 2021, 9:21am

Tried nvgstcapture-1.0 with --prev-res=4 and --video-res=4 (4: 1920x1080). Still no preview.

ShaneCCC · May 12, 2021, 9:32am

Could you try overlay sink.

export DISPLAY=:0
gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12' ! nvoverlaysink -e

midterm07 · May 12, 2021, 12:04pm

Here is the output:
Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
GST_ARGUS: Creating output stream
CONSUMER: Waiting until producer is connected…
GST_ARGUS: Available Sensor modes :
GST_ARGUS: 4032 x 3040 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 22.250000; Exposure Range min 13000, max 683709000;

GST_ARGUS: 1920 x 1080 FR = 59.999999 fps Duration = 16666667 ; Analog Gain range min 1.000000, max 22.250000; Exposure Range min 13000, max 683709000;

GST_ARGUS: 2592 x 1944 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 22.250000; Exposure Range min 13000, max 683709000;

GST_ARGUS: 2560 x 1440 FR = 40.000000 fps Duration = 25000000 ; Analog Gain range min 1.000000, max 22.250000; Exposure Range min 13000, max 683709000;

GST_ARGUS: Running with following settings:
Camera index = 0
Camera mode = 1
Output Stream W = 1920 H = 1080
seconds to Run = 0
Frame Rate = 59.999999
GST_ARGUS: Setup Complete, Starting captures for 0 seconds
GST_ARGUS: Starting repeat capture requests.
CONSUMER: Producer has connected; continuing.

ShaneCCC · May 12, 2021, 12:41pm

Any preview on HDMI display?

midterm07 · May 12, 2021, 1:19pm

No preview.

ShaneCCC · May 12, 2021, 1:21pm

Looks like nvoverlaysink element have problem on your system. What’s the different for your system.

midterm07 · May 12, 2021, 3:16pm

What information can help to understand the problem?

ShaneCCC · May 12, 2021, 3:25pm

Any reason need to use nvgstcapture-1.0?

midterm07 · May 12, 2021, 5:14pm

Much easier to use compared to gst-launch-1.0.

ShaneCCC · May 12, 2021, 5:26pm

Do have no idea due to there’s no any error.

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No preview is shown with nvgstcapture-1.0

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