[mythtv-users] Force Pal? Possible?

j2 spamfilter2 at mupp.net
Mon Nov 29 20:01:16 UTC 2004


> mythbackend resets the PAL/NTSC setting based on the
> channel configuration when it starts so make sure that
> your channels are configures as PAL.
> I'm not entirely convinced that ivtv should honour
> that call from myth if its wrong. I'm not really sure
> that being able to set ntsc mode from an application
> when the driver has been told to run in pal mode is
> sensible but i dont think we need to change that now.

Ok, i cracked it. This is what works.

/usr/bin/ivtvctl -d /dev/video0 -u 0x3000
/usr/bin/ivtvctl -d /dev/video0 -u 0xff
/usr/bin/ivtvctl -p 0
/usr/bin/ivtvctl -f width=720,height=576
/bin/sleep 2s

I noticed something fun. If i "just" did the -u 0xff as the first command. 
It does not print anything to my syslog. But, if i use 0x3000 as the first 
command, it DOES write

Nov 29 20:55:40 mythbox kernel: saa7115: decoder set norm NTSC
Nov 29 20:55:40 mythbox kernel: saa7115: set audio: 0x01
Nov 29 20:55:40 mythbox kernel: saa7127: Setting Encoder Video Standard
Nov 29 20:55:40 mythbox kernel: saa7127: Set NTSC Video Mode
Nov 29 20:55:40 mythbox kernel: saa7127: Selecting NTSC video Standard


And then the 0xff shows

Nov 29 20:55:42 mythbox kernel: ivtv: Switching standard to PAL.
Nov 29 20:55:42 mythbox kernel: saa7115: decoder set norm PAL
Nov 29 20:55:42 mythbox kernel: saa7115: set audio: 0x01
Nov 29 20:55:42 mythbox kernel: saa7127: Setting Encoder Video Standard
Nov 29 20:55:42 mythbox kernel: saa7127: Set PAL Video Mode
Nov 29 20:55:42 mythbox kernel: saa7127: Selecting PAL video Standard


Funny phenomenon? 



More information about the mythtv-users mailing list