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sdtv2csi - SDTV to MIPI CSI-2 Video Decoder

Board for converting SDTV analog video to MIPI CSI-2 using Analog Devices ADV7280A-M.

sdtv2csi topview sdtv2csi backview

Configuration example in Raspberry Pi 4

  1. Get and run kernel patch installation scripts
wget https://github.com/rniwase/sdtv2csi/raw/master/rpi/install_patch.sh
sudo bash install_patch.sh
  1. Set dtoverlay in config.txt
# for Raspberry Pi OS Bookworm:
sudo bash -c 'echo "dtoverlay=adv728x-m,adv7280m=1" >> /boot/firmware/config.txt'
# for Raspberry Pi OS Bullseye:
sudo bash -c 'echo "dtoverlay=adv728x-m,adv7280m=1" >> /boot/config.txt'
  1. Reboot the system and check for devices.
sudo reboot
sudo v4l2-ctl --all -d /dev/video0

Operation check by FFmpeg

  1. Connect NTSC composite video signal to VIDEO_IN pin header AIN1-GND

  2. Install FFmpeg

sudo apt update
sudo apt install ffmpeg
  1. Video recording
# Record full video including blanking line
ffmpeg -an -video_size 720x507 -r 29.97 -i /dev/video0 -c:v rawvideo -vf realtime -t 5 out.asf
# Record video with blanking lines cropped
ffmpeg -an -video_size 720x507 -r 29.97 -i /dev/video0 -c:v rawvideo -vf realtime,crop=720:480:0:27 -t 5 out_crop.asf