Changing window size

can't you record in 16:9 instead of 20:9 ?

if you're recording a live video with your phone, maybe you can move back a bit to capture the whole scene in 16:9. ? your goal is to have a youtube standard aspect ratio after all. it might not be ideal when viewed in your phone, but it's probably good for the majority who uses standard sized phones...

ok, maybe I'm getting mixed up. So the problem is viewing , not creating the video? You want the black bars, not the cropped width? or is it the other way around? Sorry if I ended up making this more complicated, but sometimes what is written and what is read comes out different...

ok, you are screen recording a video and it has the wrong aspect ratio, but you can edit the video to crop it to 16:9. ... and i'm so confused .. sorry, man, but I think it's over my head... maybe you want a resize, not a crop ... or perhaps look for a screen recorder with a crop feature .

if it's your webpage, maybe you can put it in a div container and specify the dimensions in px. but honestly, I'm super confused about this discussion. I feel I don't really get what you're describing. An actual example would be helpful.

Bob_Li I can, but the issue is the page is showing in full screen, everything in the page(the page itself) filling my whole screen. So if I record in 16:9, it'll capture portion of the page, leaving parts at left and right.

Bob_Li what do you mean by move back? by the way if I wasn't clear in my post, what I want to do is to make the page fit within 16:9ratio, keeping the rest of the area unused(blank, or white, or black whatever it is)

Bob_Li main thing is about how the page shows not anything about the image, the image only shows red part, which means the area where 16:9 ratio is(and so the page should be within and filling that red area). You can see some space left at the left and right side of the red area, that would be the unused area which the page wouldn't take. Normally without any method page viewing, the page takes up full screen, I want to make the page be within that red area. The rest at left and right side should not be used. It should be empty/blank(which means it could be white or black indicating that this empty area is not being used by the page, white or black that color depends on my browser theme and not important here) If this is done, I would still screen record the whole screen as that's how normally screen recorders behave. but then I can edit the video to crop it to 16:9 ratio including that red area part(and it is not problem as that part is used by page and in rest area nothing is there that wil be lost of page

Bob_Li the screen recording and cropping is fine. It is the page which is the problem. Is there a way to like...modify the viewport size/window size so instead of taking the full screen, the page takes a specific width and height?