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24th March 2021, 21:37 | #1 | Link |
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Is 1.37 shorthand for 1.375 aspect ratio, or are they different?
Wikipedia suggests that 1.37 AR is shorthand for 1.375: "The Academy ratio of 1.375:1 (abbreviated as 1.37:1)"
However, on another page in Wikipedia, the two are listed separately. So, are they in fact different or the same? The reason I ask is because I have a film encoded in 4:3 AR that is listed on IMDB as having 1.37 AR and there is also an opening note in the film stating 1.37, so I need to know if the AR is indeed 1.37 or 1.375. thanks |
25th March 2021, 16:43 | #2 | Link |
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Both may exist, but I don't know for sure. But why bother? The difference between 48:35 (1.37143) and 11:8 (1.375) is less than 0.3% or about 2 pixels height or width difference for a DVD. One won't notice this slight difference as a distorted picture.
Last edited by Sharc; 25th March 2021 at 17:11. |
25th March 2021, 18:23 | #3 | Link | |
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Surprised nobody in the forum has answered definitively yet. I hope it's not a stupid question |
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27th March 2021, 00:31 | #4 | Link |
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Not a stupid question, but one that would take a lot of work to answer correctly... and that may be impossible now.
Both have likely been used professionally, but that does not really say which is correct. Aspect ratio specs from the DVD era and before are not great or well followed. I would follow Wikipedia's 1.375 if I was setting a value, it will become the standard as we get further away from that time period and their origin story makes sense. Edit: 1.375 for film with sound, 1.37 for film without sound.
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madVR options explained Last edited by Asmodian; 27th March 2021 at 00:33. |
27th March 2021, 01:45 | #5 | Link | ||
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Does the note at the start state the film's original AR or make a statement about the video transfer? Even it's the latter, that's no guarantee that the figure is precise. The only way that you could justifiably correct the AR is if you compared your video to another source that you had strong reason to believe was right, discovered that it was squished/distorted somehow, and worked out an adjustment that would correct that distortion. Last edited by Richard1485; 27th March 2021 at 02:13. |
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27th March 2021, 04:07 | #6 | Link | |
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I didn't really want to get bogged down in the details of this specific film. I just wanted to ask if 1.37 does indeed exist as an AR separate from 1.375. My assumption is that it does not since I have not seen a single source of information state as such. Everything I've read so far (outside of those Wikis) suggests that 1.37 is shorthand for 1.375. |
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27th March 2021, 10:48 | #7 | Link | |
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I have slight doubts with 1.37 being just a shorthand of 1.375. Shouldn't this be rather 1.38 then? As has been said 1.37(5) originals have often been slighly cropped left and right for 4:3 DVD release and must be watched as 4:3, or the picture will be distorted. An example is the PAL DVD release of 'The Oxbow Incident' (original movie aspect ratio is 1.37(5)) which must be watched as 4:3. So in your case the principal question is 4:3 (1.3333....) or 1.37(5). Only you can decide what you think is correct. Edit: It seems that IMDB just uses the short form 1:37 for the 'Academy' ratio...... Edit2: A lot of formats are listed here: https://en.wikipedia.org/wiki/List_o...e_film_formats The Academy format is 1.375 as expected, but many other formats are specified as 1.37, so both seem to exist. Last edited by Sharc; 27th March 2021 at 11:52. |
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27th March 2021, 12:10 | #8 | Link | ||
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Despite the note, it's possible that your copy has borders or has been cropped or has been stretched. (To rule out the first possibility, you'd need to decode the video properly, not just take a screenshot, and examine a frame.) While it's possible that the DAR of your copy is wrong, nothing that you've presented so far demonstrates that. |
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28th March 2021, 16:35 | #9 | Link |
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The video is not letterboxed and as I mentioned before, this is not a DVD release. It's a 4k restored film, available online. And yes, I know the difference between SAR and DAR, otherwise, I wouldn't be using terms like DAR. I understand and appreciate that you're all trying to help me determine whether 4:3 is the correct DAR, but this simply wasn't my question. (The image looks squished, so I'm 99% sure it's incorrect.)
The question was whether or not 1.37 exists as a separate standard from 1.375 (Academy ratio). So far, nobody has cited any evidence that they are distinct, aside from than the Wiki article from my first post. So this topic shall remain open in case anyone has something to add related to this general question. Last edited by chronis; 28th March 2021 at 16:37. |
28th March 2021, 17:55 | #10 | Link | |
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28th March 2021, 20:53 | #11 | Link |
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Edit: OK, I see that this is a different link from the one I provided earlier, and indeed it suggests that the 1.375 and 1.37 formats/standards are different. Thanks
[Old reply: It's the same link I provided in my original post and which led to my question. It lists them separately but are they really separate standards? It could just be a mistake.] Last edited by chronis; 28th March 2021 at 21:37. |
28th March 2021, 21:39 | #12 | Link |
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What is the film called?
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28th March 2021, 21:54 | #13 | Link | ||||
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29th March 2021, 03:16 | #14 | Link |
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@Richard1485 With all due respect, it sounds to me like you're much more interested in lecturing people and showing off your superior knowledge about DVD standards than providing relevant information. My question was not predicated on anything. I simply explained why I am asking the question, but I could have just as easily left out what I'm trying to accomplish, and the question could still stand on its own. I could have stated, for example, that I'm writing a paper on aspect ratios for film class and would like to know whether the two standards 1.37 and 1.375 (Academy ratio) were the same. I agree that this forum would be the wrong place to ask.
I am satisfied with the link that @Sharc provided, showing that the 1.37 and 1.375 formats clearly had different names and specifications. |
29th March 2021, 09:09 | #16 | Link |
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Hmmm... What's the film called?
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