Here are the exact resolutions before rounding for people who are interested. (I don't know why you rounded some of them the way you did) HD: 1280 x 675 Full HD: 1920 x 1012,5 (so rounded to 1012) 2K: 2048 x 1080 QHD: 2560 x 1350 3K UHD: 2880 x 1521,64... (best rounded to 1520) 4K UHD: 3840 x 2025 6K DCI: 6144 x 3240 8K UHD: 7680 x 4050 This exact aspect ratio is 1.8926926...:1 (the 926 repeats forever) Depending on your case, you may want to round the hight of the video to an even number or round it to a number that is divisible by 8.
Hey David. Thank you for adding to the conversation! Like you said, "Depending on your case...". In my experience, most mastering services will recommend rounding down, rather than up. And (like you also said) some will recommend the divisible by 8 rule. And then there's DCP/DCI... which always uses the divisible by 8 rule. I've also found that some places/cameras will use the 1.89... value, while others literally use 1.9. So the math changes there as well, depending on who you're talking to. When I put these little aspect value vids together, I sometimes have to make choices. Sometimes there's more than one right answer, depending on who you're talking for and in what context. And if I don't know all the answers outright, I do whatever research needed to fill in the gaps. I also have to consider the potential audience for these aspect ratio vids. From the title alone, people might watch this video for different reasons. Are they interested in the 1.9 IMAX values? Or are they looking for RED camera 1.9 aspect ratio values? Because the values might actually be slightly different depending on which you're looking for. Some people might even want the exact mathematical ratio with no rounding. So I have to thread that line a little sometimes. I DO very much appreciate your comments, however, as well as your suggestion that I make this video in the first place. I'll pin your comment to the top so others can see it and be armed with as much information/input as possible.
@@UnduMedia older REDs might have a wierd 1.9 ratio but newer ones like raptor and komodo are spot on. Also dcp 4K for 2.39:1 is 4096x1716 and 1716 is not divisible by 8 so maybe they dont always have to be. I donth think JPEG 2000 is limited to blocks of 8. Also I think u used the "aspect ratio cheat sheat" for research but i noticed many mistakes there too (2K being 2048x1078 is just nonsense), I will try to inform them when I can. It would be nice that if they do round things that they at least specify if its up or down and just to an even number or one divisible by 8.
I am certain someone else probably asked this, now I ask, for I have a need. Would you be able to make one of these for IMAX's GT format, aka 1.43:1? These rarer aspect ratios are so hard to find resolution info for, and you've built up a solid collection of cheat sheets, to help us out. If you could give us one for the TRUE IMAX aspect ratio, I'd be in your debt. -Nick
You're correct... you're not the first to ask. I'm committed to another project for the next few weeks. But I promise I'll put together a 1.43:1 cheat sheet video immediately after that. Best I can do.
Hi, these are really useful videos! Could you make one with the 2.20:1 aspect ratio? I always thought it's the best balance between the sizes of the frame and the remaining letterboxes, and yet nowadays it's probably the least used
Much appreciated. Glad someone finds them useful! I will certainly do a 2.20:1 aspect ratio (just need to fit it in sometime in the next few weeks). Thanks for the suggestion!
Nope. Divide 1920 (1080p width) by 1.9. So... 1920/1.9 = 1010. The idea is that this resolution still "fits" inside a 1080p "container". 1920x1010 fits inside 1920x1080. Whereas 2052x1080 (the example you gave) would not fit inside 1920x1080. Make sense?
Here are the exact resolutions before rounding for people who are interested. (I don't know why you rounded some of them the way you did)
HD: 1280 x 675
Full HD: 1920 x 1012,5 (so rounded to 1012)
2K: 2048 x 1080
QHD: 2560 x 1350
3K UHD: 2880 x 1521,64... (best rounded to 1520)
4K UHD: 3840 x 2025
6K DCI: 6144 x 3240
8K UHD: 7680 x 4050
This exact aspect ratio is 1.8926926...:1 (the 926 repeats forever)
Depending on your case, you may want to round the hight of the video to an even number or round it to a number that is divisible by 8.
Hey David. Thank you for adding to the conversation! Like you said, "Depending on your case...".
In my experience, most mastering services will recommend rounding down, rather than up. And (like you also said) some will recommend the divisible by 8 rule. And then there's DCP/DCI... which always uses the divisible by 8 rule.
I've also found that some places/cameras will use the 1.89... value, while others literally use 1.9. So the math changes there as well, depending on who you're talking to.
When I put these little aspect value vids together, I sometimes have to make choices. Sometimes there's more than one right answer, depending on who you're talking for and in what context. And if I don't know all the answers outright, I do whatever research needed to fill in the gaps.
I also have to consider the potential audience for these aspect ratio vids. From the title alone, people might watch this video for different reasons. Are they interested in the 1.9 IMAX values? Or are they looking for RED camera 1.9 aspect ratio values? Because the values might actually be slightly different depending on which you're looking for. Some people might even want the exact mathematical ratio with no rounding. So I have to thread that line a little sometimes.
I DO very much appreciate your comments, however, as well as your suggestion that I make this video in the first place. I'll pin your comment to the top so others can see it and be armed with as much information/input as possible.
@@UnduMedia older REDs might have a wierd 1.9 ratio but newer ones like raptor and komodo are spot on. Also dcp 4K for 2.39:1 is 4096x1716 and 1716 is not divisible by 8 so maybe they dont always have to be. I donth think JPEG 2000 is limited to blocks of 8.
Also I think u used the "aspect ratio cheat sheat" for research but i noticed many mistakes there too (2K being 2048x1078 is just nonsense), I will try to inform them when I can. It would be nice that if they do round things that they at least specify if its up or down and just to an even number or one divisible by 8.
Also I made one mistake, it's not 1.8926... but 1.8962... or simply 256:135.
I am certain someone else probably asked this, now I ask, for I have a need. Would you be able to make one of these for IMAX's GT format, aka 1.43:1? These rarer aspect ratios are so hard to find resolution info for, and you've built up a solid collection of cheat sheets, to help us out. If you could give us one for the TRUE IMAX aspect ratio, I'd be in your debt.
-Nick
You're correct... you're not the first to ask. I'm committed to another project for the next few weeks. But I promise I'll put together a 1.43:1 cheat sheet video immediately after that. Best I can do.
Hi, these are really useful videos! Could you make one with the 2.20:1 aspect ratio? I always thought it's the best balance between the sizes of the frame and the remaining letterboxes, and yet nowadays it's probably the least used
Much appreciated. Glad someone finds them useful! I will certainly do a 2.20:1 aspect ratio (just need to fit it in sometime in the next few weeks). Thanks for the suggestion!
Shouldn't the 1080p WIdth be 2052? I.e. the height times 1.9?
Nope. Divide 1920 (1080p width) by 1.9. So... 1920/1.9 = 1010. The idea is that this resolution still "fits" inside a 1080p "container".
1920x1010 fits inside 1920x1080. Whereas 2052x1080 (the example you gave) would not fit inside 1920x1080.
Make sense?
Trying to screw up some standards?
How so?