[mythtv] channel.tvformat usage?

[Martin Moeller]

Hi folks.

I thought I had found out what I could use this for, but it seems I was
wrong. Is it only switching between 'Default' and 'ATSC'?

Would it be possible for this to do the equivalent of "v4lctl setnorm
<PAL-BG|NTSC|SECAM>" ? That would be very useful for me.

I have had a couple of incidents lately where autodetection fails in the
driver and doing the above corrects it. Is it really something else I
should use and not tvformat?

An example of wrong and right:

martin at monsterpc:~/mythtv/xawtv> dmesg
saa7134[0]/audio: audio carrier scan failed, using 6.000 MHz [last
detected]
You have new mail in /var/spool/mail/martin
martin at monsterpc:~/mythtv/xawtv> /usr/X11R6/bin/v4lctl list
attribute  | type   | current | default | comment
-----------+--------+---------+---------+-------------------------------------
norm       | choice | PAL-DK  | PAL     | PAL PAL-BG PAL-I PAL-DK NTSC
SECAM PAL-M PAL-Nc
input      | choice | Televis | Televis | Television Composite1 S-Video
audio mode | choice | stereo  | mono    | mono stereo lang1 lang2
bright     | int    |     127 |     128 | range is 0 => 255
contrast   | int    |      63 |      68 | range is 0 => 127
color      | int    |      63 |      64 | range is 0 => 127
hue        | int    |       0 |       0 | range is -128 => 127
volume     | int    |      10 |       0 | range is -15 => 15
mute       | bool   | off     | off     |
vertical f | bool   | off     | off     |
Invert     | bool   | off     | off     |
y offset o | int    |       0 |       0 | range is 0 => 128
y offset e | int    |       0 |       0 | range is 0 => 128
martin at monsterpc:~/mythtv/xawtv> /usr/X11R6/bin/v4lctl setnorm PAL-BG
martin at monsterpc:~/mythtv/xawtv> /usr/X11R6/bin/v4lctl list
attribute  | type   | current | default | comment
-----------+--------+---------+---------+-------------------------------------
norm       | choice | PAL-BG  | PAL     | PAL PAL-BG PAL-I PAL-DK NTSC
SECAM PAL-M PAL-Nc
input      | choice | Televis | Televis | Television Composite1 S-Video
audio mode | choice | mono    | mono    | mono stereo lang1 lang2
bright     | int    |     127 |     128 | range is 0 => 255
contrast   | int    |      63 |      68 | range is 0 => 127
color      | int    |      63 |      64 | range is 0 => 127
hue        | int    |       0 |       0 | range is -128 => 127
volume     | int    |      10 |       0 | range is -15 => 15
mute       | bool   | off     | off     |
vertical f | bool   | off     | off     |
Invert     | bool   | off     | off     |
y offset o | int    |       0 |       0 | range is 0 => 128
y offset e | int    |       0 |       0 | range is 0 => 128