Jetson TX2 capture and display GStreamer pipelines for Jetpack prior to 4.2
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Capture
There are two ways to capture: Using v4l2 or using nvcamerasrc.
nvcamerasrc
This plugin was created by NVIDIA and it has access to the ISP that helps to convert from Bayer to YUV suitable for the video encoders. However, it seems that its usage is limited to the OmniVision OV5693 sensor until NVIDIA releases its source code or until it adds support to v4l2 to use the ISP.
gst-launch-1.0 nvcamerasrc fpsRange="30.0 30.0" ! 'video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)I420, framerate=(fraction)30/1' ! \ nvvidconv flip-method=2 ! 'video/x-raw(memory:NVMM), format=(string)I420' ! fakesink silent=false -v
When the pipeline is launched a daemon appears on top nvcamera-daemon, one question about the daemon was posted on the Nvidia Embedded Computing Forum
ARM consumption: 45.7% of one core (4 cores available 400% - this means something like 11.25% of total)
RAM 1119/7853MB (lfb 1258x4MB) cpu [0%@1267,off,off,0%@1267,0%@1267,0%@1267] RAM 1119/7853MB (lfb 1258x4MB) cpu [28%@345,off,off,7%@345,3%@345,16%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [23%@345,off,off,12%@345,6%@345,12%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [21%@345,off,off,11%@345,9%@345,13%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [23%@345,off,off,7%@345,6%@345,10%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [16%@345,off,off,16%@345,9%@345,7%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [23%@345,off,off,9%@345,7%@345,7%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [16%@345,off,off,14%@345,6%@345,14%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [13%@345,off,off,15%@345,10%@345,14%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [18%@345,off,off,17%@345,4%@345,13%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [13%@345,off,off,10%@345,7%@345,15%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [16%@345,off,off,13%@345,8%@345,11%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [14%@345,off,off,15%@345,12%@345,14%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [18%@345,off,off,13%@345,14%@345,15%@345] RAM 1119/7853MB (lfb 1258x4MB) cpu [19%@345,off,off,11%@345,19%@345,11%@345] RAM 1119/7853MB (lfb 1257x4MB) cpu [14%@345,off,off,18%@345,13%@345,13%@345] RAM 1119/7853MB (lfb 1257x4MB) cpu [14%@345,off,off,10%@345,13%@345,17%@345] RAM 1119/7853MB (lfb 1257x4MB) cpu [10%@345,off,off,12%@345,14%@345,13%@345]
1574 root 20 0 9.917g 116260 37488 S 45.7 1.4 1:24.81 nvcamera-daemon 11085 nvidia 20 0 331488 9492 6004 S 3.3 0.1 0:06.98 gst-launch-1.0
The nvvidconv is required normally to convert the memory type, however, in this case, it is used to flip the image. Removing the flip from the pipeline saves like 5% of the ARM load.
nvcamerasrc exposes several properties to control the ISP
wbmode : White balance affects the color temperature of the photo
flags: readable, writable
Enum "GstNvCamWBMode" Default: 1, "auto"
(0): off - GST_NVCAM_WB_MODE_OFF
(1): auto - GST_NVCAM_WB_MODE_AUTO
(2): incandescent - GST_NVCAM_WB_MODE_INCANDESCENT
(3): fluorescent - GST_NVCAM_WB_MODE_FLUORESCENT
(4): warm-fluorescent - GST_NVCAM_WB_MODE_WARM_FLUORESCENT
(5): daylight - GST_NVCAM_WB_MODE_DAYLIGHT
(6): cloudy-daylight - GST_NVCAM_WB_MODE_CLOUDY_DAYLIGHT
(7): twilight - GST_NVCAM_WB_MODE_TWILIGHT
(8): shade - GST_NVCAM_WB_MODE_SHADE
(9): manual - GST_NVCAM_WB_MODE_MANUAL
scene-mode : property to set scene mode
flags: readable, writable
Enum "GstNvCamSceneMode" Default: 0, "face-priority"
(0): face-priority - GST_NVCAM_SCENE_MODE_FACE_PRIORITY
(1): action - GST_NVCAM_SCENE_MODE_ACTION
(2): portrait - GST_NVCAM_SCENE_MODE_PORTRAIT
(3): landscape - GST_NVCAM_SCENE_MODE_LANDSCAPE
(4): night - GST_NVCAM_SCENE_MODE_NIGHT
(5): night-portrait - GST_NVCAM_SCENE_MODE_NIGHT_PORTRAIT
(6): theatre - GST_NVCAM_SCENE_MODE_THEATRE
(7): beach - GST_NVCAM_SCENE_MODE_BEACH
(8): snow - GST_NVCAM_SCENE_MODE_SNOW
(9): sunset - GST_NVCAM_SCENE_MODE_SUNSET
(10): steady-photo - GST_NVCAM_SCENE_MODE_STEADYSHOT
(11): fireworks - GST_NVCAM_SCENE_MODE_FIREWORKS
(12): sports - GST_NVCAM_SCENE_MODE_SPORTS
(13): party - GST_NVCAM_SCENE_MODE_PARTY
(14): candle-light - GST_NVCAM_SCENE_MODE_CANDLE_LIGHT
(15): barcode - GST_NVCAM_SCENE_MODE_BARCODE
color-effect : property to set color effect
flags: readable, writable
Enum "GstNvCamColorEffectMode" Default: 1, "off"
(1): off - GST_NVCAM_COLOR_EFFECT_OFF
(2): mono - GST_NVCAM_COLOR_EFFECT_MONO
(3): negative - GST_NVCAM_COLOR_EFFECT_NEGATIVE
(4): solarize - GST_NVCAM_COLOR_EFFECT_SOLARIZE
(5): sepia - GST_NVCAM_COLOR_EFFECT_SEPIA
(6): posterize - GST_NVCAM_COLOR_EFFECT_POSTERIZE
(7): aqua - GST_NVCAM_COLOR_EFFECT_AQUA
auto-exposure : property to set auto exposure mode
flags: readable, writable
Enum "GstNvCamAutoExposureMode" Default: 2, "on"
(1): off - GST_NVCAM_AUTO_EXPOSURE_OFF
(2): on - GST_NVCAM_AUTO_EXPOSURE_ON
(3): OnAutoFlash - GST_NVCAM_AUTO_EXPOSURE_AUTOFLASH
(4): OnAlwaysFlash - GST_NVCAM_AUTO_EXPOSURE_ALWAYSFLASH
(5): OnFlashRedEye - GST_NVCAM_AUTO_EXPOSURE_AUTO_RED_EYE
flash : property to set flash mode
flags: readable, writable
Enum "GstNvCamFlashMode" Default: 0, "off"
(0): off - GST_NVCAM_FLASH_OFF
(1): on - GST_NVCAM_FLASH_ON
(2): torch - GST_NVCAM_FLASH_TORCH
(3): auto - GST_NVCAM_FLASH_AUTO
flicker : property to select flicker detection and avoidance mode
flags: readable, writable
Enum "GstNvCamFlickerMode" Default: 3, "auto"
(0): off - GST_NVCAM_FLICKER_OFF
(1): 50Hz - GST_NVCAM_FLICKER_50HZ
(2): 60Hz - GST_NVCAM_FLICKER_60HZ
(3): auto - GST_NVCAM_FLICKER_AUTO
contrast : property to adjust contrast value
flags: readable, writable
Float. Range: 0 - 1 Default: 0
saturation : property to adjust saturation value
flags: readable, writable
Float. Range: 0 - 2 Default: 1
tnr-strength : property to adjust temporal noise reduction strength
flags: readable, writable
Float. Range: 0 - 1 Default: 0
tnr-mode : property to select temporal noise reduction mode
flags: readable, writable
Enum "GstNvCamTNRMode" Default: 0, "NoiseReduction_Off"
(0): NoiseReduction_Off - GST_NVCAM_NR_OFF
(1): NoiseReduction_Fast - GST_NVCAM_NR_FAST
(2): NoiseReduction_HighQuality - GST_NVCAM_NR_HIGHQUALITY
edge-enhancement : property to adjust edge enhnacement value
flags: readable, writable
Float. Range: 0 - 1 Default: -1
trigger : property to fire pre capture trigger
flags: readable, writable
Enum "GstNvCamCaptureTrigger" Default: 0, ""
(1): idle - GST_NVCAM_TRIGGER_IDLE
(2): start - GST_NVCAM_TRIGGER_START
intent : property to select capture intent
flags: readable, writable
Enum "GstNvCamCaptureIntent" Default: 1, "preview"
(1): preview - GST_NVCAM_INTENT_PREVIEW
(2): still - GST_NVCAM_INTENT_STILL
(3): video - GST_NVCAM_INTENT_VIDEO
(4): video-snapshot - GST_NVCAM_INTENT_VIDEO_SNAPSHOT
(5): zsl - GST_NVCAM_INTENT_ZSL
sensor-id : Set the id of camera sensor to use. Default 0.)
flags: readable, writable
Integer. Range: 0 - 255 Default: 0
enable-exif : Return Exif data with captured frame
flags: readable, writable
Boolean. Default: false
enable-meta : Return Sensor meta data with captured frame
flags: readable, writable
Boolean. Default: false
aeRegion : Property to set region of interest for auto exposure.
Use GArray, with values of ROI coordinates (top,left,bottom,right)
and weight in that order, to set the property.
flags: readable, writable
Boxed pointer of type "GArray"
wbRegion : Property to set region of interest for white balance.
Use GArray, with values of ROI coordinates (top,left,bottom,right)
and weight in that order, to set the property.
flags: readable, writable
Boxed pointer of type "GArray"
fpsRange : Property to set FPS range.
Use string with values of FPS Range (low, high)
in that order, to set the property.
flags: readable, writable
String. Default: null
exposure-time : Property to adjust exposure time.
This property will have effect only when Exposure mode is Off.
flags: readable, writable
Float. Range: 0 - 3.402823e+38 Default: 0.033
wbManualMode : Property to set manual mode of White balance.
This property will have effect only when wbMode is manual.
flags: readable, writable
Enum "GstNvCamWBManualMode" Default: 0, "off"
(0): off - GST_NVCAM_WB_MANUAL_OFF
(1): reset - GST_NVCAM_WB_MANUAL_RESET
(2): restore - GST_NVCAM_WB_MANUAL_RESTORE
(3): external-gains - GST_NVCAM_WB_MANUAL_EXTGAINS
wbGains : Property to set external white balance Gains.
Use GArray, with values of WB gains (R, GR, GB, B)
in that order, to set the property.
This will have effect only when wbMode is manual.
flags: readable, writable
Boxed pointer of type "GArray"
aeLock : Property to lock auto exposure.
flags: readable, writable
Boolean. Default: false
callback : Property to set user callback. It is required if user wants
to change capture settings per frame. Provide address
of GstNvCamSrcCallbacks type struct as value.
flags: writable
Pointer. Write only
dump-bayer : Dump raw bayer data in still capture mode.
flags: readable, writable
Boolean. Default: false
num-sensors : Property to get number of sensors.
Returns GArray containing number of sensors {usb,csi}
flags: readable
Boxed pointer of type "GArray"
enable-surround-cameras: Enable Surround Camera (Res: 3456x2304)
flags: readable, writable
Boolean. Default: false
stitch-in-w : Set the stitch in W.
flags: readable, writable
Integer. Range: 0 - 4336 Default: 4336
stitch-in-h : Set the stitch in H.
flags: readable, writable
Integer. Range: 0 - 2440 Default: 2440
surface-layout : Set the surface layout. Default 0. (0=Blocklinear, 1=Pitch)
flags: readable, writable
Integer. Range: 0 - 1 Default: 0
orientation : Sensor orientation value. This must be accessed after PAUSED state.
flags: readable
Integer. Range: 0 - 360 Default: -1
v4l2src
Starting on L4T R23.2 there is a /dev/video0 node to capture, however, this node will give you frames in Bayer which are NOT suitable to encode because it grabs frames directly from the ov5693 camera without using the ISP.
https://devtalk.nvidia.com/default/topic/923984/ov5693-through-v4l2-interface-not-working-in-23-2/
It works also with the UVC driver.
Capture and Display
nvcamerasrc
gst-launch-1.0 nvcamerasrc fpsRange="30.0 30.0" ! 'video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)I420, framerate=(fraction)30/1' ! \ nvvidconv flip-method=2 ! 'video/x-raw(memory:NVMM), format=(string)I420' ! nvoverlaysink -e
ARM consumption: 46.1% of one core (4 cores available 400% - this means something like 14% of total). However, only the capture is 11.25% so the display consumes 2.75%. For other cameras, you can find in our wiki latency numbers for glass to glass measurements
RAM 1184/7853MB (lfb 1246x4MB) cpu [2%@345,off,off,0%@345,0%@345,0%@345] RAM 1186/7853MB (lfb 1246x4MB) cpu [2%@1881,off,off,0%@1881,6%@1881,0%@1881] RAM 1239/7853MB (lfb 1246x4MB) cpu [21%@345,off,off,26%@345,18%@345,16%@345] ->Start capture RAM 1239/7853MB (lfb 1246x4MB) cpu [18%@345,off,off,9%@345,9%@345,10%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [21%@345,off,off,12%@345,8%@345,6%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [9%@345,off,off,12%@345,12%@345,15%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [11%@345,off,off,14%@345,17%@345,8%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [13%@345,off,off,15%@345,17%@345,8%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [10%@345,off,off,14%@345,14%@345,10%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [14%@345,off,off,22%@345,9%@345,12%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [12%@345,off,off,14%@345,8%@345,20%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [9%@345,off,off,9%@345,17%@345,19%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [7%@345,off,off,17%@345,20%@345,12%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [9%@345,off,off,17%@345,13%@345,12%@345] RAM 1239/7853MB (lfb 1246x4MB) cpu [12%@345,off,off,20%@345,7%@345,14%@345] RAM 1194/7853MB (lfb 1246x4MB) cpu [9%@345,off,off,9%@345,15%@345,8%@345] ->Stop capture RAM 1194/7853MB (lfb 1246x4MB) cpu [0%@345,off,off,0%@345,2%@345,0%@345] RAM 1194/7853MB (lfb 1246x4MB) cpu [0%@345,off,off,0%@345,1%@345,0%@345]
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1574 root 20 0 9.979g 208932 44656 S 46.2 2.6 5:18.85 nvcamera-daemon 11507 nvidia 20 0 423932 11508 8796 S 3.6 0.1 0:00.66 gst-launch-1.0
nvgstcapture-1.0
This is an application based on GStreamer and OMX to capture, encode and save the video to the filesystem, and exposes several application options. The source code is not released by NVIDIA yet but they are planning to release it in future versions of Linux 4 Tegra (L4T). For further reference, you can check the Nvidia Embedded Computing Forum.
nvidia@tegra-ubuntu:~$ nvgstcapture-1.0 --help
Encoder null, cannot set bitrate!
Encoder Profile = Baseline
Usage:
nvgstcapture-1.0 [OPTION...] Nvidia GStreamer Camera Model Test
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gst Show GStreamer Options
Application Options:
--prev-res Preview width & height. USB Range: 0 to 12 (5632x4224) and CSI Range: 2 to 12 (5632x4224) e.g., --prev-res=3
--cus-prev-res Custom Preview width & height [for CSI only] e.g., --cus-prev-res=1920x1080
--image-res Image width & height. Range: 0 to 12 (5632x4224) e.g., --image-res=3
--video-res Video width & height. Range: 0 to 9 (3896x2192) e.g., --video-res=3
-m, --mode Capture mode value (1=still 2=video)
-v, --video-enc Video encoder type (0=h264[HW] 1=vp8[HW] 2=h265[HW] 3=vp9[HW])
-b, --enc-bitrate Video encoding Bit-rate(in bytes) e.g., --enc-bitrate=4000000
--enc-profile Video encoder profile (Only for H.264) (0=Baseline, 1=Main, 2=High)
-J, --image-enc Image encoder type (0=jpeg_SW[jpegenc] 1=jpeg_HW[nvjpegenc])
-k, --file-type Container file type (0=mp4 1=3gp 2=mkv)
--cap-dev-node Video capture device node (0=/dev/video0[default], 1=/dev/video1, 2=/dev/video2) e.g., --cap-dev-node=0
--svs [For USB] (=) chain for video Preview. [For CSI only] use "nvoverlaysink"
--file-name Captured file name. nvcamtest is used by default
--camsrc Camera Source to use (0=v4l2, 1=csi[default], 2=videotest, 3=eglstream)
--orientation [For CSI only] Camera sensor orientation value
-w, --whitebalance [For CSI only] Capture whitebalance value
-s, --scene-mode [For CSI only] Camera Scene-Mode value
-c, --color-effect [For CSI only] Camera Color Effect value
--auto-exposure [For CSI only] Camera Auto-Exposure value
--flash [For CSI only] Camera Flash value
--flicker [For CSI only] Camera Flicker Detection and Avoidance Mode value
--contrast [For CSI only] Camera Contrast value
--saturation [For CSI only] Camera Saturation value
--edge-enhancement [For CSI only] Camera Edge Enhancement value
--tnr-strength [For CSI only] Camera TNR-Strength value
--tnr-mode [For CSI only] Camera TNR Mode value
--sensor-id [For CSI only] Camera Sensor ID value
--eglstream-id [For CSI EGLStream Consumer] Select EGLStream Producer ID value. Default value 0
--display-id [For nvoverlaysink only] Display ID value
--aeRegion [For CSI Only] ROI for AE coordinates(top,left,bottom,right) and weight in that order.e.g., --aeRegion="30 40 200 200 1.2"
--wbRegion [For CSI Only] ROI for AWB coordinates(top,left,bottom,right) and weight in that order.e.g., --wbRegion="30 40 200 200 1.2"
--fpsRange [For CSI Only] FPS range values (low, high) e.g., --fpsRange="15 30"
--exposure-time [For CSI only] Capture exposure time value. e.g., --exposure-time=0.033
--wbGains [For CSI Only] WB gains values (R, GR, GB, B) in that order. e.g., --wbGains="1.2 1.4 0.8 1.6"
--overlayConfig Overlay Configuration Options index and coordinates in (index, x_pos, y_pos, width, height) order e.g. --overlayConfig="0, 0, 0, 1280, 720"
--enable-exif Enable Exif data
--dump-bayer Dump bayer data in addition to image capture.
--eglConfig EGL window Coordinates (x_pos y_pos) in that order e.g., --eglConfig="50 100"
--aeLock [For CSI only] Enable auto exposure lock e.g., --aeLock
--enable-meta Enable Sensor MetaData reporting
--nvvideosink-create-eglstream [For nvvideosink EGLStream Producer] Enable nvvideosink EGLStream Producer
--callback Enable User callback to set capture settings per frame
--app-profile Enable KPI profiling
--kpi-numbers Enable KPI measurement
-A, --automate Run application in automation mode
-S, --start-time Start capture after specified time in seconds. Default = 5 sec (use with --automate or -A only)
-Q, --quit-after Quit application once automation is done after specified time in seconds. Default = 0 sec (use with --automate or -A only)
-C, --count Number of iterations of automation testcase. Default = 1 (use with --automate or -A only)
--capture-gap Number of milliseconds between successive image/video capture. Default = 250 msec (use with --automate and --capture-auto only)
--capture-time Capture video for specified time in seconds. Default = 10 sec (use with --automate and --capture-auto only)
--toggle-mode Toggle between still and video capture modes for count number of times (use with --automate or -A only)
--toggle-sensor Toggle between sensor-id 0 and 1 (use with --automate or -A only)
--capture-auto Do image/video capture in automation mode for count number of times(use with --automate or -A only)
--enum-wb Enumerate all white-balance modes for count number of times (use with --automate or -A only)
--enum-scm Enumerate all scene modes for count number of times (use with --automate or -A only)
--enum-ce Enumerate all color-effect modes for count number of times (use with --automate or -A only)
--enum-ae Enumerate all auto-exposure modes for count number of times (use with --automate or -A only)
--enum-f Enumerate all flash modes for count number of times (use with --automate or -A only)
--enum-fl Enumerate all flicker detection and avoidance modes for count number of times (use with --automate or -A only)
--enum-ct Enumerate contrast value through 0 to 1 by a step of 0.1 for count number of times (use with --automate or -A only)
--enum-st Enumerate saturation value through 0 to 2 by a step of 0.1 for count number of times (use with --automate or -A only)
--enum-ee Enumerate edge-enhancement value through 0 to 1 by a step of 0.1 for count number of times (use with --automate or -A only)
--enum-ts Enumerate TNR strength value through 0 to 1 by a step of 0.1 for count number of times (use with --automate or -A only)
--enum-tnr Enumerate all TNR modes for count number of times (use with --automate or -A only)
--streaming-mode [For CSI Only] Enable streaming mode (1=stream only, 2=stream+record)
--streaming-file File to stream instead of camera input
Supported resolutions in case of CSI Camera
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
(5) : 2104x1560
(6) : 2592x1944
(7) : 2616x1472
(8) : 3840x2160
(9) : 3896x2192
(10): 4208x3120
(11): 5632x3168
(12): 5632x4224
Runtime CSI Camera Commands:
Help : 'h'
Quit : 'q'
Set Capture Mode:
mo:<val>
(1): image
(2): video
Get Capture Mode:
gmo
Set Sensor Id (0 to 10):
sid:<val> e.g., sid:2
Get Sensor Id:
gsid
Set sensor orientation:
so:<val>
(0): none
(1): Rotate counter-clockwise 90 degrees
(2): Rotate 180 degrees
(3): Rotate clockwise 90 degrees
Get sensor orientation:
gso
Set Whitebalance Mode:
wb:<val>
(0): off
(1): auto
(2): incandescent
(3): fluorescent
(4): warm-fluorescent
(5): daylight
(6): cloudy-daylight
(7): twilight
(8): shade
(9): manual
Get Whitebalance Mode:
gwb
Set Scene-Mode:
scm:<val>
(0): face-priority
(1): action
(2): portrait
(3): landscape
(4): night
(5): night-portrait
(6): theatre
(7): beach
(8): snow
(9): sunset
(10): steady-photo
(11): fireworks
(12): sports
(13): party
(14): candle-light
(15): barcode
Get Scene-Mode:
gscm
Set Color Effect Mode:
ce:<val>
(1): off
(2): mono
(3): negative
(4): solarize
(5): sepia
(6): posterize
(7): aqua
Get Color Effect Mode:
gce
Set Auto-Exposure Mode:
ae:<val>
(1): off
(2): on
(3): OnAutoFlash
(4): OnAlwaysFlash
(5): OnFlashRedEye
Get Auto-Exposure Mode:
gae
Set Flash Mode:
f:<val>
(0): off
(1): on
(2): torch
(3): auto
Get Flash Mode:
gf
Set Flicker Detection and Avoidance Mode:
fl:<val>
(0): off
(1): 50Hz
(2): 60Hz
(3): auto
Get Flicker Detection and Avoidance Mode:
gfl
Set Contrast (0 to 1):
ct:<val> e.g., ct:0.75
Get Contrast:
gct
Set Saturation (0 to 2):
st:<val> e.g., st:1.25
Get Saturation:
gst
Set Exposure Time in seconds:
ext:<val> e.g., ext:0.033
Get Exposure Time:
gext
Set Auto Exposure Lock(0/1):
ael:<val> e.g., ael:1
Get Auto Exposure Lock:
gael
Set Edge Enhancement (0 to 1):
ee:<val> e.g., ee:0.75
Get Edge Enhancement:
gee
Set ROI for AE:
It needs five values, ROI coordinates(top,left,bottom,right)
and weight in that order
aer:<val> e.g., aer:20 20 400 400 1.2
Get ROI for AE:
gaer
Set ROI for AWB:
It needs five values, ROI coordinates(top,left,bottom,right)
and weight in that order
wbr:<val> e.g., wbr:20 20 400 400 1.2
Get ROI for AWB:
gwbr
Set FPS range:
It needs two values, FPS Range (low, high) in that order
fpsr:<val> e.g., fpsr:15 30
Get FPS range:
gfpsr
Set WB Gains:
It needs four values (R, GR, GB, B) in that order
wbg:<val> e.g., wbg:1.2 2.2 0.8 1.6
Get WB Gains:
gwbg
Set TNR Strength (0 to 1):
ts:<val> e.g., ts:0.75
Get TNR Strength:
gts
Set TNR Mode:
tnr:<val>
(0): NoiseReduction_Off
(1): NoiseReduction_Fast
(2): NoiseReduction_HighQuality
Get TNR Mode:
gtnr
Capture: enter 'j' OR
followed by a timer (e.g., jx5000, capture after 5 seconds) OR
followed by multishot count (e.g., j:6, capture 6 images)
timer/multihot values are optional, capture defaults to single shot with timer=0s
Start Recording : enter '1'
Stop Recording : enter '0'
Video snapshot : enter '2' (While recording video)
Set Preview Resolution:
pcr:<val> e.g., pcr:3
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
(5) : 2104x1560
(6) : 2592x1944
(7) : 2616x1472
(8) : 3840x2160
(9) : 3896x2192
(10): 4208x3120
(11): 5632x3168
(12): 5632x4224
Note - For preview resolutions 4208x3120 and more use option --svs=nveglglessink
Get Preview Resolution:
gpcr
Set Image Resolution:
icr:<val> e.g., icr:3
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
(5) : 2104x1560
(6) : 2592x1944
(7) : 2616x1472
(8) : 3840x2160
(9) : 3896x2192
(10): 4208x3120
(11): 5632x3168
(12): 5632x4224
Get Image Capture Resolution:
gicr
Set Video Resolution:
vcr:<val> e.g., vcr:3
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
(5) : 2104x1560
(6) : 2592x1944
(7) : 2616x1472
(8) : 3840x2160
(9) : 3896x2192
Get Video Capture Resolution:
gvcr
Runtime USB Camera Commands:
Help : 'h'
Quit : 'q'
Set Capture Mode:
mo:<val>
(1): image
(2): video
Get Capture Mode:
gmo
Capture: enter 'j' OR
followed by a timer (e.g., jx5000, capture after 5 seconds) OR
followed by multishot count (e.g., j:6, capture 6 images)
timer/multihot values are optional, capture defaults to single shot with timer=0s
Start Recording : enter '1'
Stop Recording : enter '0'
Set Preview Resolution:
pcr:<val> e.g., pcr:2
(0) : 176x144
(1) : 320x240
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
NOTE: Preview/Encode resolution will be same as Capture resolution for USB-Camera
Get Preview Resolution:
gpcr
Get Image Capture Resolution:
gicr
Get Video Capture Resolution:
gvcr
Set Capture Device Node:
cdn:<val> e.g., cdn:0
(0): /dev/video0
(1): /dev/video1
(2): /dev/video2
Get Capture Device Node:
gcdn
Runtime encoder configuration options:
Set Encoding Bit-rate(in bytes):
br:<val> e.g., br:4000000
Get Encoding Bit-rate(in bytes):
gbr
Set Encoding Profile(only for H.264):
ep:<val> e.g., ep:1
(0): Baseline
(1): Main
(2): High
Get Encoding Profile(only for H.264):
gep
Force IDR Frame on video Encoder(only for H.264):
Enter 'f'
Capture snapshots
Sometimes when the board has been just flashed you need to run reboot in order to run nvgstcapture-1.0 successfully. To take snapshots:
nvgstcapture-1.0 #then press j to take an snapshot q
Resolutions available to create snapshot:
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
(5) : 2104x1560
(6) : 2592x1944
(7) : 2616x1472
(8) : 3840x2160
(9) : 3896x2192
(10): 4208x3120
(11): 5632x3168
(12): 5632x4224
nvgstcapture-1.0 -m 1 --image-res=10 #set 1 to snapshot mode
In general, the application is consuming 15% of each of the four cores. It is always displaying video, so this could affect.
Capture and record video
nvgstcapture-1.0 -m 2 # set the mode in video
1 # start video recording
2 # take a snapshot
0 # stop video recording
In case of video it should support:
(2) : 640x480
(3) : 1280x720
(4) : 1920x1080
(5) : 2104x1560
(6) : 2592x1944
(7) : 2616x1472
(8) : 3840x2160
(9) : 3896x2192
However, it is not possible to set other values than 2,3,4,5 up to 9.
nvgstcapture-1.0 -m 2 --video-res=5
top
top - 22:15:09 up 2:30, 4 users, load average: 0.47, 0.45, 0.30
Tasks: 267 total, 1 running, 266 sleeping, 0 stopped, 0 zombie
%Cpu(s): 11.0 us, 6.0 sy, 0.0 ni, 83.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 8041332 total, 754840 free, 1611400 used, 5675092 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 6303032 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1639 root 20 0 9.979g 264612 45284 S 52.3 3.3 6:14.66 nvcamera-daemon
27513 nvidia 20 0 815040 13932 10272 S 4.3 0.2 0:01.48 nvgstcapture-1.
There are a daemon and a pipeline. Interesting...
While recording the pipeline (nvgstcapture) increases the ARM load to 10% and then it goes down again, even with the highest resolution. It will be interesting to understand what is the daemon doing.
