C779-Software: Difference between revisions

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  sudo apt-get upgrade
  sudo apt-get upgrade


2. Enable camera module (the camera is enabled by default in Raspberry pi Bullseys OS)
2. Enable camera module (the camera is enabled by default in Raspberry pi '''Bullseys/Bookworm''' OS)
  sudo raspi-config
  sudo raspi-config


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should now reflect the resolution detected.
should now reflect the resolution detected.


8. The chip supports two formats - RGB3(the default) and UYVY. RGB3 is 24bpp, and UYVY is YUV4:2:2 16bpp.
8. Test video recording
v4l2-ctl --verbose -d /dev/video0 --set-fmt-video=width=1280,height=720,pixelformat='RGB3' --stream-mmap=4 --stream-skip=3 --stream-count=2 --stream-to=csitest.yuv --stream-poll
The above command will capture frames and save to /home/pi (filename: csitest.yuv)


Over the normal 2 CSI-2 lanes the data rate is such that RGB3 can run at a maximum of 1080p30, whilst UYVY will go up to 1080p50. Use the following command to select UYVY, however your application may override that.
9. To play the YUV file on Raspberry Pi OS desktop, use FFplay. (Run the following command on local terminal window, Not work if executing the command from SSH).
  v4l2-ctl -v pixelformat=UYVY
  ffplay -f rawvideo -video_size 1280x720 -pixel_format bgr24 csitest.yuv


9. Check that the audio drivers / card is available to ALSA.
'''If you have other tutorials, please leave them in the comments.'''
<pre>
pi@raspberrypi:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: tc358743 [tc358743], device 0: bcm2835-i2s-dir-hifi dir-hifi-0 [bcm2835-i2s-dir-hifi dir-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
</pre>
Note: <span style="color:red;">card 1</span> means that the card number for the TC358743XBG is "1" and it might be different.
 
10. Install GStreamer tool;
sudo apt install gstreamer1.0-tools
 
Check gstreamer tool version:
<pre>
pi@raspberrypi:~ $ gst-launch-1.0 --version
gst-launch-1.0 version 1.18.4
GStreamer 1.18.4
http://packages.qa.debian.org/gstreamer1.0
</pre>
 
<span style="color:red;">Note: </span>
 
Different versions have different command line parameters, which is very annoying.
 
11. Use gstreamer to record video and audio
#GStreamer v1.14 command
gst-launch-1.0 v4l2src io-mode=5 ! video/x-raw, format=UYVY, framerate=25/1 ! v4l2h264enc output-io-mode=4 ! video/x-h264,profile=high ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv alsasrc device=hw:1 ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux.
 
foo.mkv is the output file.
 
If your gstreamer is version 1.8 or above, you can try the following test command. In addition, alsasrc device=hw:1 represents the sound card of TC358743, you can use "arecord -l" to query.
 
#The command to recode a video with audio. (GStreamer 1.18.4)
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,<span style="color:red;">framerate=30/1</span>,format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv alsasrc device=hw:1 ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux.
 
#The sample command to recode a video without audio. (C779 doesn't support audio)
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=30/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv
 
Press CTRL+C to end recording.
 
If you have the '''WARNING: erroneous pipeline: no element "v4l2src"''' error, please run the following command:
sudo apt-get install gstreamer1.0-plugins-good
 
WARNING: erroneous pipeline: no element "h264parse"
sudo apt-get install gstreamer1.0-plugins-bad
 
WARNING: erroneous pipeline: no element "alsasrc"
sudo apt-get install gstreamer1.0-alsa
 
PS:  We recommend that you modify the above '''<span style="color:red;">framerate</span>''' parameter to the actual frame rate of your HDMI signal, the actual frame rate value is from the result of ''''v4l2-ctl --query-dv-timings'''' command.
[[File:Csi-framerate.png|none]]
 
For the above HDMI device, because the frame rate is 60, so we modify the framerate parameter to 60 like the followint command.
 
Record the video only:
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=60/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv
 
Record the video and audio: (if your shield supports audio also)
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=60/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv <span style="color:red;">alsasrc device=hw:1</span> ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux.
 
Note: <span style="color:red;">alsasrc device=hw:1</span> - "'''1'''" means the audio card number, You must change to correct audio card number.(Query the car number via ''''arecord -'''l', refer to step 9)
 
12. For old raspberry pi os, you can use [[Raspistil]] to take photo.


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