RPi and Tv resolution
#1
Hi,

I got following information from my rasberry:
http://imageshack.com/a/img36/4766/n9jf.jpg
It looks like my TV can handle 1280x720 at 60 Hz 16:9

But when I checked my XBMC system info shows:
1024x768 @60.00HZ - full scren.

Do I have to correct setup in my config file or should I change my settings? If yes what should be changed?
Below is my config.txt setup:
Quote:################################################################################
# This file is part of OpenELEC - http://www.openelec.tv
# Copyright © 2009-2012 Stephan Raue ([email protected])
# Inspired and partly copied from:
# http://youresuchageek.blogspot.fr/2012/0...ec-on.html
#
# This Program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This Program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OpenELEC.tv; see the file COPYING. If not, write to
# the Free Software Foundation, 51 Franklin Street, Suite 500, Boston, MA 02110, USA.
# http://www.gnu.org/copyleft/gpl.html
################################################################################
# Bootloader configuration - config.txt
################################################################################
################################################################################
# Memory (System/GPU configuration )
################################################################################
# default GPU memory split (do not change if you do not know what you are doing)
gpu_mem=128
# SDRAM size based GPU memory split, uncomment and setup to override 'gpu_mem'
gpu_mem_256=100
gpu_mem_512=128
################################################################################
# Overclocking settings
# WARNING: Do not change/enable if you do not know what you are doing!
# The System may become unstable or you can have data corruption or
# you can loose your warranty if you set wrong settings
#
# please read: http://elinux.org/RPi_config.txt#Overclo...figuration
################################################################################
# Overclock mode settings.
#
# default recommended values are: arm_freq | core_freq | sdram_freq | over_voltage
# no overclocking : 700 | 250 | 400 | 0
# mode 'Modest' : 800 | 300 | 400 | 0
# mode 'Medium' : 900 | 333 | 450 | 2
# mode 'High' : 950 | 450 | 450 | 6
# mode 'Turbo' : 1000 | 500 | 500 | 6
arm_freq=950
core_freq=450
sdram_freq=450
over_voltage=6
# set to 'force_turbo=1' to disable dynamic overclocking (you can lose your warranty!)
force_turbo=1
# If you have any data corruption using Turbo Mode and overclocking
# try with this setting uncommented
# If this still fails, try to use Medium mode without "over_voltage=2"
# If it ultimately keeps failing, forget about this until it gets fixed
# Use a more conservative mode that will works fine in any cases:
# initial_turbo=30
################################################################################
# Overscan settings
################################################################################
# Make display smaller to stop text spilling off the screen
# see also http://www.raspberrypi.org/phpBB3/viewto...67&t=15700
# overscan_scale=1
# disable_overscan=1
# Adapt overscan values to your needs
# overscan_left=57
# overscan_right=59
# overscan_top=20
# overscan_bottom=20
################################################################################
# various settings see also: http://elinux.org/RPi_config.txt
################################################################################
# hdmi_mode=4
# Force HDMI even if unplugged or powered off
hdmi_force_hotplug=1
hdmi_edid_file=1
################################################################################
# License keys to enable GPU hardware decoding for various codecs
# to obtain keys visit the shop at http://www.raspberrypi.com
################################################################################
# decode_MPG2=0x3xxxxxxxxx
# decode_WVC1=0xcaxxxxxxxx
# decode_DTS=0x00000000
# decode_DDP=0x00000000
################################################################################
# End of default configuration
# all values below this line were inserted from config.txt.bk (your old config)
# and can be merged with the above values
################################################################################

Thank you in advance,

koze
Reply
#2
You may be able to adjust screen resolution in setting/system/video. Does it give 1920x1080 as an option?

However it looks like your display only supports 1080i (interlaced). You will get better image quality from a progressive mode.

Also, 1920x1080 is not reported as native. That means most likely the display doesn't actually have 1920x1080 pixels, and so wouldn't give higher quality in that mode.

You would need to look at the specs for your display, but most likely the display is actually 1024x768 (as that is what EDID is reporting as preferred).
Reply
#3
(2014-02-21, 17:12)popcornmix Wrote: You may be able to adjust screen resolution in setting/system/video. Does it give 1920x1080 as an option?

However it looks like your display only supports 1080i (interlaced). You will get better image quality from a progressive mode.

Also, 1920x1080 is not reported as native. That means most likely the display doesn't actually have 1920x1080 pixels, and so wouldn't give higher quality in that mode.

You would need to look at the specs for your display, but most likely the display is actually 1024x768 (as that is what EDID is reporting as preferred).

I dont think I have an option to adjust screen resolution. I am using Openelec with USB.
Here is my Tv spec:

Quote:Screen Size 42" (107cm) Diagonal
Display Technology Plasma
Resolution 1024x768
Pixel Pitch **
Aspect Ratio 16:9
Contrast Ratio 5000:1
Brightness 1000 cd/m2
Displayable Colors 1.1 billion colors
Viewing Angle 160°
Display Life 60,000 hours
Response Time **
Screen Filter Anti-Glare
Compatibility
Color System NTSC, ATSC
Formats 480i, 480p, 720p, 1080i

Any suggestion? Should I play with some settings or better not?
Thank you,

koze
Reply
#4
Quote:1024x768 @60.00HZ - full screen.
Quote:Resolution 1024x768

Everything seems to be set up correctly.
There's no point driving a higher resolution than your display natively support - the display will just resize it down again, reducing sharpness.
Reply
#5
Thank you,

to be closed.
Reply

Logout Mark Read Team Forum Stats Members Help
RPi and Tv resolution0