Adjust video playback brightness on-the-fly...?

I've just moved over from a 5G iPod to an iPhone, and had a question about a certain aspect of video playback...
I watch a lot of video on my iPod (now iPhone), and I'm a stickler for saving my battery life, so I always turn the screen brightness right down to its lowest viewable point when watching video.
I also watch video in bed, with the lights off, so turning the brightness right down still makes the videos perfectly viewable.
Sometime though, of course, I have to turn the brightness up for scenarios where I'm in a brighter environment.
The way to do this on the 5G iPod is, at any time when watching a video, hit the centre button twice (once takes you to the scrubber) and then scroll left or right for dimmer or brighter. Easy. Job done. And you can see the results right there and then, so you can adjust it to just right.
Now unless I'm mistaken, there's no similar way of doing this on the iPhone, and that you can NOT adjust video brightness on the fly...
The only way to adjust brightness is, while watching a video, to go to Home > Settings > Brightness > Drag it > Home > iPod > Video.
Surely everyone can see that's a MUCH more laborious way of doing things!?
Even then, you can't be sure you got the brightness setting adjusted correctly, because a bright vivid animation, like The Simpsons, is much more visible and clear on a low brightness setting than, say, TV shows of Magnum P.I. with their 80's "converted-from-video" feel.
And believe me, I know, because those 2 examples are real-world scenarios for me.
And before anyone says it, yes I DO know about the "Auto-Brightness" setting, but I've tried it, and 9 times out of 10 it's too dim for my liking in a brightly-lit room (especially on the Magnum P.I.'s) and it's too bright in bed with the lights off (especially on the Simpsons)!
So I suppose if I'm making this post a question, it would be:
Is there no method of changing video playback brightness on-the-fly, while the video is still playing on-screen?

Brett,
You've been around on these forums long enough to understand what is and isn't allowed by the TOA, so I'm fairly sure you know (I don't know but could make a guess as well).
In general this whole thread could be deleted... except that you asked a question at the very end of your first post (which was answered). That's all these forums are for, asking and getting questions answered. Editorial comments, rants and raves are not what we are here for.

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