Hi,
I use Kodi on a Pi to connect to our main 16:9 CRT TV. The picture did not seem as good as another 4:3 CRT that I use with another Pi and after some investigation I found that after installation the sdtv_mode was strangely set to NTSC with 60Hz refresh. After editing /boot/config.txt as shown below and power cycling the Pi the picture improved but there is still an inconsistency.
cat /boot/config.txt
dtoverlay=lirc-rpi:gpio_out_pin=17,gpio_in_pin=18
sdtv_mode=2
sdram_freq=450
over_voltage_sdram=0
arm_freq=950
disable_splash=1
over_voltage=6
core_freq=450
initial_turbo=0
start_x=1
sdtv_aspect=3
disable_overscan=1
decode_MPG2=0x5f06206d
decode_WVC1=0x5ce67322
gpu_mem_256=112
gpu_mem_512=144
force_turbo=0
hdmi_ignore_cec_init=1
In the Display Setting tab of the OSMC Pi Settings both sdtv options are correctly reported as being PAL and 16:9 but executing the command
/opt/vc/bin/tvservice -s
state 0x80001 [PAL 4:3], 720x576 @ 50.00Hz, interlaced
gives output that is identical to the output of the other Pi that is connected to a real 4:3 CRT TV but I would have expected to see [PAL 16:9] because of the sdtv_aspect=3 setting.
Am I missing something?