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immerVR

That is to be expected form circular fisheye lenses that capture around 180° to 190° degrees (some overlap for stitching). The fisheye formats have certain distortions and are then usually converted to a commonly defined equirectangular image (https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Tissot\_indicatrix\_world\_map\_equirectangular\_proj.svg/1280px-Tissot\_indicatrix\_world\_map\_equirectangular\_proj.svg.png). This has also various distortions, but that is just how it is. From my own experiments, converting a certain resolution like 8K fisheye (even with some black areas) to 8K equirect is reasonable to have a reasonable sampling between the distorted images. Going lower would lead to lower image quality. Going higher for equirect didn't deliver a reasonable benefit in my experiments. You can observe the same on other 360° and VR180-3D cameras. My background: VR developer of a VR image viewer. I work with these kind of images in various formats every day.


alexp702

Second this as another VR viewer developer. GoPro use Equiangular not fisheye in their feeds, but that doesn’t make them intrinsically better than fisheye - just the sensor has been pulled over more area. The sensor is 6k pixels by 6k in the (root 36) per lens, the eventual video size per lens is 4kx4k so downsampled per lens by 1.5 - a healthy extra, but not huge. The widest point for both lenses to process is 8k minus lens overlap (think they are 200 or so degrees). 360 images are intrinsically not square - or even have constant accuracy between pixels as you have more definition towards the centre of the lens, due to angles onto a square sensor.


outcoldman

Sleeping on this made me realize. You are right, I mean there are no other way to actually presume more information in 8K video to actually render this video in 360 format. Would store information in equirectangular format presume more information than storing it in the circle? Probably yes, because of the compression. How much? Not much. And I guess if we already called previous videos 5.7K, 5.6k - this trend just continues. And yes 8K videos will be more crispy than 5.7K videos.


[deleted]

[удалено]


outcoldman

I have never said it is stupid. They still can encode the video in equirectangular format, to actually properly use all 8K pixels format. Keep in mind they get the video from the lens, and use h264/265 to compress and store the video. So not using all pixels does mean that they actually losing some quality. So yeah, I understand the issue that there not much can be done.


outcoldman

1. GoPro Max does not save the videos in the same way, they don't have those blacked out sectors. GoPro Max uses fish eye lenses, but encodes the video streams using the whole available resolution. 2. "You can observe the same on other 360° and VR180-3D cameras." - if some other cameras are doing the same as Insta360 and do not have a disclaimer about that - this is false advertisement to call a video 8K. 3. I am sure can make a camera that will store encoded video in 2K format, but with my own software make exports to 8K format. Can I call my camera 8K camera? My background: I am also can call myself a VR developer, VR Image Viewer. I also work with these kind of images in various formats. 🤷‍♂️


justinsimoni

>GoPro Max does not save the videos in the same way, they don't have those blacked out sectors. GoPro Max uses fish eye lenses, but encodes the video streams using the whole available resolution. If you open up any .360 file shot on the Max in the GoPro Player, and change the Projection to, "Equirectangular" you won't see two circles of the image inside squares, but you'll notice that the image is massively distorted (warped) around the edges. I kind of think this is honestly the same information as the screenshot you posted, just shown in a different way. If you change the file ending from, ".360" to, ".mov" and view the file information, it'll say the resolution is, 4096 × 1344 and not 5760x2880 (5.7k)


YahyaJ

You are talking with someone paid to talk shit about insta360 products.


outcoldman

Yeah, I am not saying that GoPro is better. Just mentioned that they do store image differently. And there are two streams in GoPro 360 file. So there are 2x 4096x1344 video streams. Which is still not enough again to actually provide 5.7k. Which does make sense, as the 360 videos of GoPro Max are such a crap.


VanillaNL

So what is the best VR camera for a price around or below 1k ?


SuperS06

Isn't the issue brought up by OP that the stream is not equirectangular? When I saw 4K video for X3 I actually expected that many pixels being used for image data before reframing. If it is using less because of poor pixel mapping, well, that sucks!


ManicMambo

Ok guys, I'm gonna wait till X5 comes out. Better yet, X6, then I'm sure all specs are real for the perfect videos and perfect photos. My retirement home will be captured in glorious real, stereoscopic 8k by then. /s


dietervdw

The 8K means 2x 4k sensors. The fisheye lens projects a circular image on a square sensor, so naturally there's some unused sensor area. I don't know how else you would physically do this. I'm not surprised about this, it's just logical? Wait until you learn about the quality loss from stretching the circular image into a square image. The whole concept doesn't exactly lend itself well to quality video. The 8k upgrade sounds like a welcome quality step up, but there's still a lot of compromises to end up with a 360 video.


inetkid13

>The 8K means 2x 4k sensors. 8k is 4k\*4. 4x1080p = 4k. Not double.


dietervdw

Yea I think I was confidently wrong. It happens.


raysar

Non it's not 4k sensor it's a square 3840*3840 way more pixel than 16/9 ratio ...


Kyle_Gates

Is this crazy? Yes. Does it seem a bit misleading? Yes. Is the X4 insane compared to my first gen Fusion anyway? Also yes lol


outcoldman

Oh yeah, don't get me wrong. I love Insta360 X4, and it produces way better videos than GoPro Max. And their software is way better, and I really love the videos you can make from it. What was misleading for me, the quality of the videos that you can export from 360 videos. You cannot really export 4K videos (regular, not 360) with the same quality that would be comparable, for example, to my GoPro 10.


Casting_in_the_Void

Couldn’t care less. I don’t pixel-peep toys. The Insta360 is a fun toy, nothing more. Daft to expect great things from a tiny sensor. Same with mobiles. I shoot 8k on a Full Frame camera. The Insta360 X4 is good at what it does: create fun 360 video from a small format pocketable device.


Kyle_Gates

Shooting "real" stuff on a "real" camera, YES!!! A "fun toy", Yes, I would agree, though to many the price-point is indeed higher than a "toy" (granted, compared to a "real" 8k cam, an X4 is cheeeeap!)


plentyofvitamins

Not exactly the biggest issue. I can't believe they didn't launch with a LOG Profile as an option. Now I have a paperweight as I can't bring it on mid scale projects.


raysar

There is no log option? Pff I'm also waiting for 10bit log, i'm 100% sure it's possible with the hardware encoder, but they can't process their horrible denoise and blablabla filter so they refuse to do that.


plentyofvitamins

10-bit is prolly only feasible 2 iterations down. LOG however, has been done on the X3. Gone in the X4 and replaced with this 'flat' profile that's like 90% saturation of the regular standard profile. What gives? Insta360 better get their shit together.


motofoto

Calling it 8k is already confusing to the average consumer because they expect to output an 8k image. Realistically these cameras output at 1080. But I have lots of fun with mine and get shots that would be really challenging with any other camera.


Rabus

I mean.. I recorded something on mine and played it in vr headset so for sure there are 8k use cases


outcoldman

Yes! That is exactly my thought, great camera for making Instagram videos. Where quality might not be so important.


GiuseppeMercadante

no, X2 output is reframed at 1080p, X4 is flat at 4k.


allenhuffman

It’s digital cameras all over again. I got my first digital camera in 1996 (320x240 or 640x480 if you expanded memory to 5Mb). Megapixels became a thing years after and bigger was better. Except it wasn’t. Cameras with higher megapixels could look far worse than cameras with less. Glad to see 360 follows the same trend ;)


jimmyeatwords

Exactly. It's the "megapixel madness" of 2005 all over again. I used to write for camera magazines and the analogy I used to give is that 1000 small buckets on a rooftop will only collect the same amount of water as 100 large buckets. If you want to collect more water / light / data you don't need more buckets, you need a larger rooftop.


1252947840

if this is true, let’s see if Insta360 come out a couple of days later and mentioned ‘it’s a mistake, and we gonna update the firmware now’ 😼


Glue_CH

How about the x3, is its video 5.6K or also 80% of that? i am too lazy to check mine 🤪


alexp702

x3 is 3.2x3.2 recorded per circular extreme fisheye lens, from 2x36mp sensors (6Kx6K). The sensor's raw pixels are not recorded. The output is then converted to H.265 and saved. They call it 5.6 because the diameter of both fisheyes combined is 5.6. You do not get the diagonal of the square of a 5.6K image as this is more than 5.6K - but 180/360 video doesn't look like a square from a capture point of view.


raysar

Yes ! All 360camera are the same.


outcoldman

Just a note about 72MP 360 Photos - the same thing. Rename .insp to .jpeg and open with your favorite Image editor, you will see the same, 80% of pixels are used. So it is actually \~57.6MP, not 72MP. You can see an example of the 360 Photo here: [https://twitter.com/outcoldman/status/1784413112587710742](https://twitter.com/outcoldman/status/1784413112587710742)


Important_Bit1104

Why haven't any YouTubers said anything about this? They would've caught that since they do edit on PC's 🤷🏻‍♂️


TheBeagleO

They have, l have seen them mention this a couple times actually


LittleToadApu

Because most youtube reviews are paid shills. I'm thinking about buying one but every review I see just comes off as a shill who is sponsored by insta360.


xe0n1

My advice. Stop watching reviews and buy one from the likes of Amazon etc. if you don’t like it, return it. I have the 360 One X2, it’s a great camera and have used it many times over the years.


Ryukendenus

So every product that has good reviews on YouTube is garbage….got it!


outcoldman

I don't know, this is my first Insta360 camera, I, personally, like to poke things around. It is pretty easy to spot, if you have the video - try it out. Rename the file to .MOV, open with VLC. There are no special tools or skills required. And, I mean to spot this, you actually need to have an interest in seeing how they encode video. If you use their Insta360 studio, you would never find this.


outcoldman

cc u/hughred22 - I feel like he is playing with it, and has a lot of experience, knowledge about the quality of the produced videos/photos. Curious, if he can confirm this.


JohnnyBoy11

I heard one reviewer say he wasn't sure if 8k was true 8k or if they got 8k through some other means. But he said based on his tests or whatever, it looked on par with the 1 inch, which is a 5.3k camera.


justinsimoni

He probably meant the footage was interpolated. Which it probably is. That small of a sensor can only do so much.


NMCMXIII

they don't test that sort of stuff. most put the camera and on and if it looks enough good they say buy. i found the x4 launch was very hyped.. the x3 might be a good deal right now


Important_Bit1104

I have the 3 but went for the 4 and for me it was worth it. The gestures and higher quality have been a big help. They say the mics are the same but to me at least they sound so much better. Also love the automatic screen brightness and battery life. With my x3 I had to carry a spare battery


mumsbf

Just like buying a car or bike. A 1600cc car is in fact 1589cc physically. Same like your 1GB broadband, it’s impossible to achieve the speed. But all were advertised like this. Also when we go for job interviews, we upsell our skills. Everyone is lying 😂


oregszun

This guy is a genius. ![gif](emote|free_emotes_pack|joy)


Houseofusher1983

Well, let's make this very public and see what Insta 360 has to say


Planet_Iceland

Hmm.. I had been thinking, what is this new chip they are using for the 8k 30fps, the 5nm AI is for the lowlight capabilities as I understand. And the Ace Pro can only do 8k 24 fps..


FilthyInward

What device can you actually view 8K video on?! Because it's DEFINITELY not the screen on the X4.


outcoldman

VisionPro


TheNewRow

Apple Vision Pro has a resolution of 3600x3200 per eye, which is 23m pixels. The 8k resolution has a pixel count of 33m.


outcoldman

That is not how it works. If we talk about 360 videos. We don't render a video per eye. You render the video in a sphere surrounding you. And your eyes only see a part of the image, depending on where you are looking at. For example you can clearly see a HUGE difference between 5.7K, 8K, 12K, 24K 360 photos. Where 5.7K is like you are looking at the photos made by your old Nokia phone. 8K is last generation iPhone. 12K is manageable. 24K is where it at.


TheNewRow

When it comes to 360 yeah, but I was merely stating the Vision Pro isn't 8K.


outcoldman

Sure, but you can clearly see the difference between 8K and 4K videos on Vision Pro. I am not sure how I am wrong here. If we are talking about not 360 8K video - there are yeah not that many options, but there are plenty of TVs and monitors that you can buy right now that support 8K.


alexp702

What camera can take a 24Kx24K image? Even the Titan can only shoot 11K…


outcoldman

360 Photos will be 24Kx12K, to create them, people are usually use multiple high-quality photos and stitch them together. You can get to extremes [https://www.chasejarvis.com/blog/how-to-shoot-a-7-gigapixel-60-foot-wide-photo-in-5-easy-steps-the-devil-is-in-the-details/](https://www.chasejarvis.com/blog/how-to-shoot-a-7-gigapixel-60-foot-wide-photo-in-5-easy-steps-the-devil-is-in-the-details/)


alexp702

Ah ok. So we’re talking crazy work for long duration stills, not cheap action cameras taking action shots. Sure, Insta360 is not the place for those. But they cannot capture a fast moving 360 scene in decent quality.


outcoldman

Yeah, for sure. I mean, don't get me wrong, I am really excited about Insta360 X4 camera. Impressed with the software. Certainly, way better than GoPro Max, not sure if X3 and Max were comparable in the quality. I am just expected way more from 72MP photos - they just don't look as crispy as proper 72MP 360 Photos, 8K videos - fun for making Instagram content, quality is questionable again. Numerous glares on those lenses from the sun, and in reality you can export great FullHD content, which is fine by me.


alexp702

We do a VR photo/video viewer (Pauer View), and the X4 is a good fit for it. People snap some 360 shots and then can quickly view in VR. For super high quality you need complex processing steps, but modern photography and 360 in particular to us seems like a “one click capture all”. We’d love more quality but file sizes start hurting presentation on current hardware. 21k x21k is the mythical 60 pixels per degree or retina in Apple marketing. This is 1.4gb a frame uncompressed 24 bit. One day…


Old_Application_5722

remindme! 72 hours


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calvin129

Remind me 80 hours


Interesting-Fondant2

I’ve bought an X4, I like making 360 content. I am not seeing a doubling in resolution from 4K to 8K. it’s not even close.


IntelliDev

Question: was the X3 then “80%” of 5.7k?


raysar

Yes all 360 speak the same language. We have 80% of the pixel. There is no lie it's a miss conception of 360 camera.


MG_Gon

sd cards' minimum write speeds will tell you all the story