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Honestly that is quite a smart idea, buying a full frame and mounting a 1.6x APS-C lens. It's just a shame about the cost of full frame cameras.

[https://ibb.co/album/MBwDgB]

Some screenshots of Bilal's recorded MLV files with some chroma smoothing applied are below.

To serve as a comparison, in this album you can ALSO see what 1x1 looks like at a 60% sample, but crucially using pixel binning to prevent downscaling sharpness.

https://ibb.co/album/MBwDgB

There will never be competition with 1x1. It looks night and day better – double, triple as good – because it literally is 3x the number of pixels. An unobtainable pixel count.

On the other hand, continuous video at narrower aspect ratios than 3:2 would be theoretically possible using 3x1 or 1x3 at full sensor resolutions.

And it's pretty clear to me that the clarity scale goes 1x3 at the worst, then 3x1, and then lightyears out in front, 1x1.
I believe that if we clean it up with antialiasing and use the right settings for MLV capture / processing, we could possibly get this to look the same as a 60% resolution 1x1 file – e.g. 5120x2760 3x1 would be approximately equal in acuity to 3072x1656 1x1, while using a lower bitrate and full sensor width.



IMAGES:

1x3

3x1

1x1




(I'd appreciate it if someone could tell me how to shrink these massive images)

It would be great to see some more recent tests.. I was constantly getting these green and red vertical stripes everywhere with 3x1 mode on 5D2, maybe it was not that bad as illustrated above but they were kind of annoying anyway


By the way I tried to switch the camera in 3x1 now, to make some samples, and can't do it for some reason.. Well, it switches but there is some kind of framerate problem, I spent maybe an hour right now already and it just doesn't work.. Who knows why. These modes are really unreliable..

That's really interesting, because that seems to be the model that Reddeercity and a lot of other people filmed 4096x590 3x1 footage on. I wonder what modifications made it look so clean?

Also - thanks for the samples, Bilal! I'll play around with them. I appreciate the work you've done for the community, your builds are great!

Looked at the sample - it looks great! I wonder how far this could be pushed; at 1.85:1, we could probably get away with 4600x828, if we used 12/10 bit lossless.

At 2.35? Honestly, from a data rate perspective, it may be possible to do full sensor readout 5208x736 (=3,833,088px), but I'm not sure about computational intensity. It would look incredible, let's be honest here. A DCI 2K 2.39 aspect ratio file is 2048x858 - we're pretty much there vertically, and well over horizontally. I'd reckon it would be approximately equivalent in resolving power to 2880x1206 in 1:1 crop mode - a claim that will be interesting to test.

Thanks! I was wondering if we could push it up to something like 4800x680 - or at a stretch, 5184x736 (=3,815,424 pixels, which is similar to some of Bilal's Crop Mood 1x3 presets)?

Going to try on a 700D at some point using custom crop_rec, if I can't get those resolutions to work, even 4.6k would be very nice. We're basically getting QHD images equivalent.
What I've noticed is that it is much harder to actually tell the vertically stretched images have less detail! I'm not quite sure why.

The third link I posted was shot on a 5D MkII and uses line skipping. It seems to look great if I'm honest.

I did also post a link of a more recent 1x3 binning video shot in 16:9 at 4.5K - the last link - but I'm not sure how they got around the muddiness issue that plagues 1x3. I'd love to know. Their video looks amazing, and has no clear horizontal artefacting. So 1x3 can look good but I'm not sure how they made it look passable.

I still believe that 3x1 could look good at a high resolution e.g. 4600x826, IF that video I sent is indeed using a 5dmkii in 3x1. But you know better than me, feel free to enlighten me here!

Hello,
I'd like to experiment around with 3x1 binning mode and desqueezing methods vs the more typical 1x3 binning. While it may seem like 1x3 binning would give a preferential result, it leaves horrendous stretch artefacts from object edges and small lines being stretched over three pixels.

3x1 will have the same issue vertically I suppose, but from sample imagery, it sometimes seems less so:

- Conflicting results here: https://www.magiclantern.fm/forum/index.php?topic=16516.25.
- A 3x1 vs 1x3 sample here: https://www.magiclantern.fm/forum/proxy.php?request=https%3A%2F%2Ffarm5.staticflickr.com%2F4825%2F32682240208_5f5a3c0415_o.png&hash=0631f7332d4edcc36621dba971252555, shows the 3x1 imagery on the right being vastly superior, needing only some antialiasing and a more advanced destretch algorithm to make it visually appealing).
- This footage which is 3x1 looks amazing with minimal aliasing: https://www.youtube.com/watch?v=l9u-nfAwaV8

Then again, there IS some good 1x3 footage out there that lacks the 'horizontal stetching' weirdness - I wonder what's different about this footage, for example: https://www.youtube.com/watch?v=3W52N9GVHqU

With that in mind, I was wondering if anyone had good quality (ideally >3.5k horizontal resolution when de-stretched) footage of any aspect ratio of 3x1 footage? Best case scenario would be a direct comparison of the same scene compared in 1x3 vs 3x1, but just 3x1 would be fine.

Thank you for any assistance!

Hello all,
I've been processing some high resolution 1x3 RAW video clips, yet they all come out far muddier than expected, and the loss of detail is severe when compared to 1x1 crop recording (2880x1206), unlike the minor quality loss some have described. What is the best algorithm for desqueezing/stretching this anamorphic video so that detail is retained?

Using ML, would it be possible to record MLV files to both the USB port output (connected to an SD card reader) and the SD card, alternating between frames? This would double the write speed on older cameras, such as the 700D. There could then be a setting in, say, the MLV compiler to use two separate video files, one on the USB output and another on the normal SD, to process, where it then sets frame 1 from the SD and frame 2 from the USB, and so on.

This could also be used to increase raw shooting speeds because write speeds could be doubled.