DART-MX8M CSI: Difference between revisions
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== Testing Camera Preview on Display == | == Testing Camera Preview on Display == | ||
{{#vardefine:USE_KMSSINK}} | |||
{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M | | {{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M | | ||
In the examples below /dev/videoX is either /dev/video0 or /dev/video1 | In the examples below /dev/videoX is either /dev/video0 or /dev/video1 | ||
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* QSXGA 2592x1944@15fps: | * QSXGA 2592x1944@15fps: | ||
# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false | # gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false | ||
| {{#varexists:USE_KMSSINK | | |||
* 800x480@30fps: | |||
# gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! video/x-raw,width=800,height=480 ! kmssink sync=false can-scale=false | |||
* 1280x720@30fps: | |||
# gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! video/x-raw,width=1280,height=720 ! kmssink sync=false can-scale=false | |||
* 1920x1080@30fps: | |||
# gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! video/x-raw,width=1920,height=1080 ! kmssink sync=false can-scale=false | |||
# gst-launch-1.0 v4l2src device=/dev/video0 ! imxvideoconvert_g2d ! kmssink sync=false can-scale=false | |||
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* 480P 640x480@30fps: | * 480P 640x480@30fps: | ||
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* QSXGA 2592x1944@15fps: | * QSXGA 2592x1944@15fps: | ||
# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false | # gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false | ||
}}}} | }}}}}} | ||
== Testing Camera JPEG Snapshot == | == Testing Camera JPEG Snapshot == | ||
Revision as of 18:39, 5 April 2021
DART-MX8M Camera
Testing MIPI-CSI2 cameras
Before running any of the pipelines below make sure you have camera(s) connected. i.MX family of processors uses gstreamer as multimedia framework. Please refer to https://gstreamer.freedesktop.org/
Camera Probe
Run the following command to see if you have the camera(s) detected
# v4l2-ctl --list-devices
This should produce the following output
# v4l2-ctl --list-devices
i.MX6S_CSI (platform:30a90000.csi1_bridge):
/dev/video0
i.MX6S_CSI (platform:30b80000.csi2_bridge):
/dev/video1
As you can see above there are 2 cameras accessible as /dev/video0 and /dev/video1
Testing Camera Preview on Display
In the examples below /dev/videoX is either /dev/video0 or /dev/video1
- 480P 640x480@30fps:
# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=640,height=480 ! autovideosink sync=false
- NTSC 720x480@30fps:
# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=720,height=480 ! autovideosink sync=false
- 720P 1280x720@30fps:
# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1280,height=720 ! autovideosink sync=false
- 1080P: 1920x1080@30fps:
# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=1920,height=1080 ! autovideosink sync=false
- QSXGA 2592x1944@15fps:
# gst-launch-1.0 v4l2src device=/dev/videoX ! video/x-raw,width=2592,height=1944 ! autovideosink sync=false
Testing Camera JPEG Snapshot
To capture JPEG snapshot run one of the pipelines below depending upon the required picture resolution.
In the examples below /dev/videoX is either /dev/video0 or /dev/video1
- 480P 640x480:
# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=640,height=480 ! jpegenc ! filesink location=/tmp/test.jpg
- NTSC 720x480:
# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=720,height=480 ! jpegenc ! filesink location=/tmp/test.jpg
- 720P 1280x720:
# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1280,height=720 ! jpegenc ! filesink location=/tmp/test.jpg
- 1080P 1920x1080:
# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=1920,height=1080 ! jpegenc ! filesink location=/tmp/test.jpg
- QSXGA 2592x1944:
# gst-launch-1.0 v4l2src device=/dev/videoX num-buffers=1 ! video/x-raw,width=2592,height=1944 ! jpegenc ! filesink location=/tmp/test.jpg
Using both cameras simultaneously
The following pipeline is an example of using both cameras simultaneously.
In this example a short video stream from each camera is saved as an MJPEG-encoded AVI file.
# gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=100 ! video/x-raw,width=1920,height=1080 ! jpegenc ! avimux ! filesink location=./test0.avi \
v4l2src device=/dev/video1 num-buffers=100 ! video/x-raw,width=1920,height=1080 ! jpegenc ! avimux ! filesink location=./test1.avi