Kay?

Added:
  KERNEL=="video0", SYMLINK+="video"
  KERNEL=="radi0", SYMLINK+="radio"

vbi -> vbi0 is missing, scantv uses that. 

Added and submitted. Thanks!

This is not just a matter of missing symlinks. The /dev/device0 and 1 and 2 and 3 are missing for video, radio, vbi, vtx, and bttv. This may be the case in all versions. How do I create them that they stay?

Put them as real device-nodes with the correct permissions (like they should show up in /dev) in /lib/udev/devices/. They get copied over at every bootup.

As root I ran this script.
---
#!/bin/bash

function makedev () {

        for dev in 0 1 2 3; do
                echo "/dev/$1$dev: char 81 $[ $2 + $dev ]"
                rm -f /dev/$1$dev
                mknod /dev/$1$dev c 81 $[ $2 + $dev ]
                chmod 666 /dev/$1$dev
        done

        # symlink for default device
        rm -f /dev/$1
        ln -s /dev/${1}0 /dev/$1
}

#seehttp://roadrunner.swansea.uk.linux.org/v4lapi.shtml

echo "*** new device names ***"
makedev video 0
makedev radio 64
makedev vtx 192
makedev vbi 224

#echo "*** old device names (for compatibility only) ***"
#makedev bttv 0
#makedev bttv-fm 64
#makedev bttv-vbi 224
---
Of course they only stay there till a reboot. There is NO /lib/udev directory. There is a /dev/.udevdb folder with no class files for the video, radio, etc.
http://forums.novell.com/group/opensuse.org.suse-linux.support.install-configure-administration/readerNoFrame.tpt/@thread@13868@F@10@D-,D@+13865/@article@14329
has a lot of details on what I've tried and learned so far.

Oops, sorry, this is 10.0, which I lost the focus. There should be a /etc/udev/static_devices.txt file, where you can add these nodes. This is completely replaced by /lib/udev/devices on 10.1 and almost all other distros today.

Please add the needed entries to /etc/udev/static_devices.txt, so that they will be created with every reboot. If you update to 10.1 some day, these nodes belong into /lib/udev/devices/ (as long as the kernel does not get fixed to create the nodes). Closing the bug.