i guess you were right and SSBB Jap runs at 480i on pal wii.
To force it to run at 480p, i think you may need to use wii video mode changer.
Somebody did it to make No more Heroes US run at 480p on an pal wii.
(here is the link http://gbatemp.net/index.php?showtopic=77331&st=75)
(here's what she/he has done
1. Open the ISO with Tricha
2. Extract main.dol from second partition
3. Drag on the main.dol in the executable of Wii Video Mode Changer
4. DOS terminal appear and ask you to choose video type you want
5. For 480p, choose "6" than Enter
6. Replace the modified main.dol on the iso
7. Sign in the partition
8. Burn and enjoy)
I have not tried it yet.
Let us know if you succeed to make it work.
The new version of Wii Video Mode Changer has been released (v2.1) which contains a "Smart Patcher". I believe this converts all NTSC resolutions to PAL ones, and it also has SSBB support, as v2 used to crash with an error.
I will hopefully try this out this afternoon to see if it's possible to get 480P mode to work. Will keep you updated.
OK, I can confirm that the Wii Video Mode Changer seems to make no difference with Brawl.
I have my Wii setup in 480P on my 42" LCD, and when launching Brawl from the disc menu it used to flick to 480i mode. This still occurs and the game plays as normal.
When I set my Wii to 576i mode, Brawl launches, but I get a black screen for a bit, and all of sudden it comes back but there is some weird graphical glitches happening. It also seems to slow the console down, all the menus feel very weird. Jumping back to the Wii Menu, the slowness and graphical glitches are still there. I had to power off my console and power it back up before things went back to normal.
Set to 480i mode, everything just works, but I'm pretty sure this is the case even without patching.
For reference, I patched using the Smart Mode and v2.1 of the Wii Video Mode Changer. Here's a quick summary:
Wii set to 480P --> Game switches to 480i on boot
Wii set to 480i --> Game plays as per normal
Wii set to 576i --> Game runs but very weird graphical glitches and slowness.
Hope this helps. Guess I will have to wait a bit longer for a 480P version...
Yes! Moving to component cables makes the picture instantly better and well defined regardless of the video mode. But when running in 480p it just looks so sharp and clear that I find it really reduces eye strain if you are playing for hours at a time and just looks really good. Well worth buying the cables if you have a decent TV.