As you can see in the video; don't zoom in too much if there isn't too much light ;). When there is a lot of light, this is not too bad, but in low light, zooming too much is not a good idea. Of course I have not yet done the test with the flash on, I have to wait and see what the results are, which will come soon. Remember that these are the most difficult tests, all smartphone cameras have problems with this. In this video I filmed a little too little in the normal way, without zoom, but at the moments when I didn't zoom in or didn't zoom in much, the quality is quite good. Also remember that you normally don't film in such a place. you usually do this during the day and at an open-air concert or festival. What I do is look for the limits of what the device can do and what you should not do ;). I also made a number of mistakes when zooming, which suddenly made the image even worse. Instead of zooming forward even further, I first zoomed in again and that was not allowed. My apologies for that, I come from an Android smartphone, it takes some getting used to.
But if you watch the evening video of the Oneplus 11 and the Pixel 8 pro; I think the iPhone is much better. The Pixel and OnePlus stutter and when zooming there is much more noise than with the iPhone. Zooming in and out is also better on the iPhone.