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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.