CVBS (Composite Video)

Composite video is an analog video transmission and supported resolutions are 480i or 576i. ODROID-N2 supports this video feature and designed to connect with a TV through audio jack.

The CVBS video signal is assigned to the audio connector (CON6) and TV can be connected with a cable.

Cable connection

TV connection with RCA male-to-male cables

Enjoy Retro games

In order to select CVBS as a display output rather than HDMI, the Linux kernel command line must be configured properly and HDMI cable must not be attached. The CVBS picture format can be set in boot.ini.

setenv cvbsmode "480cvbs"
#setenv cvbsmode "576cvbs"
setenv bootargs "${bootargs} cvbsmode=${cvbsmode} cvbscable=${cvbscable}"

For example, if the TV support 480CVBS picture format and its cable is connected, the Linux kernel command line would show like this.

$ cat /proc/cmdline 
console=ttyS0,115200n8 ... cvbsmode=480cvbs cvbscable=1 ...

The android support zoom in/out method to manage the overscan. you can mange it via Odroid-Settings or boot.ini.
Zoom rate value is limited from 80% to 100%.

# Display Zoom Rate
setenv zoom_rate "100"

Coming soon…

# Shrink the picture as 10%
setenv overscan=10
setenv bootargs "${bootargs} overscan=${overscan}"
  • odroid-n2/application_note/cvbs.txt
  • Last modified: 2019/08/22 10:14
  • by odroid