27.4.14

Composite (RCA) TV-out to SCART from Raspberry

Today I finally made time to try Pi's composite TV out [AV button on TV remote control :].



I had to edit my NOOBS /boot/config.txt to disable HDMI and enable Standard Definition Video.
# for more options see http://elinux.org/RPi_config.txt

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

#hdmi_force_hotplug=1 # uncomment to enable hdmi
#config_hdmi_boost=4
overscan_left=24
overscan_right=24
overscan_top=16
overscan_bottom=16
#disable_overscan=0

# overclock
arm_freq=900
sdram_freq=450
core_freq=350
force_turbo=1

################################################################################
##  Standard Definition Video Settings
################################################################################

## sdtv_mode
##     defines the TV standard for composite output
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Normal NTSC (Default)
##     1        Japanese version of NTSC - no pedestal
##     2        Normal PAL
##     3        Brazilian version of PAL - 525/60 rather than 625/50, different
##              subcarrier
##
sdtv_mode=2

## sdtv_aspect
##     defines the aspect ratio for composite output
##
##     Value    Description
##     -------------------------------------------------------------------------
##     1        4:3 (Default)
##     2        14:9
##     3        16:9
##
sdtv_aspect=1

## sdtv_disable_colourburst
##     Disables colour burst on composite output. The picture will be
##     monochrome, but possibly sharper
##
##     Value    Description
##     -------------------------------------------------------------------------
##     0        Colour burst is enabled (Default)
##     1        Colour burst is disabled
##
#sdtv_disable_colourburst=1
After rebooting (sudo shutdown -r now) I had no screen change on the TV :( I checked and the output was well set.
pi@raspi ~ $ tvservice -s
state 0x80002 [PAL 4:3], 720x576 @ 50.00Hz, interlaced
Without solution I read a bunch of thread at http://www.raspberrypi.org/forums/viewforum.php?f=28, but no solution. I signed up and made photos for the bug report and by viewing a saw that the SCART is switched to OUTPUT and by switching to INPUT the screen on TV changed.

UPDATE 31.7.2015 - Photos of the used cable and SCART https://goo.gl/photos/dSwhfFQjd3yf3Mrk7https://goo.gl/photos/171jGm9EGKCBAgq98


2 comments:

  1. Are you connecting the Pi to the TV's AV port or the main cable one?

    ReplyDelete
  2. Your tutorial helped me!
    Was having a problem connecting my Pi using RCA.
    With your explanation code written above, it really enlightened me. Thanks again.

    ReplyDelete