sdtv2csi - SDTV to MIPI CSI-2 Video Decoder

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

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

2. 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'

3. 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

3. 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