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crop_rec and derived builds / Re: 3K/UHD 5D2 Raw development and Other Digic IV Cams

« on: June 08, 2021, 06:04:11 PM »

Yay reddeercity, you're back!

If you get lossless compression working for 5Dii, that would be such a game changer.

I've gone through posts related to HDMI out, and it seems like although it syncs to 1920x1080, because it is linked to what the cam screen shows, it will always have black bars, even in crop mode. Such a shame. In all your deep dives into registers, you've never found something that would allow full 1:1 pixel 1920x1080 with no bars? If black bars are compulsory, would it be possible to anamorphically squeeze 1920x1080 into 1650x1080 for less wasted pixels in final 16:9 footage? For livestreaming concerts, that would be a godsend.

Not the right forum, but if anyone has hints on good affordable HDMI to USB capture cards or what 256Gb CF card you can still buy with 5Dii raw level write speeds, I'd love recommendations.

Lastly reddeercity, for all the useful stuff you do, I'm sure lots of people would donate to your coffee / computer parts fund by Paypal if you have one?

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Hardware and Accessories / Re: CF-to-SATA hardware interface for RAW recording (fork)

« on: October 28, 2020, 07:59:58 AM »

So exciting that this topic has been resurrected from the grave.

So if I understand correctly, any 'sata to IDE' converter that provides UDMA 7 and 150Mb/s read/write speeds while acting as a device not a host, should work with the right 'dumb' pin conversion adapter?

So what about an adapter like this:
https://www.amazon.com.au/Ableconn-IIDE-MSAT-2-5-Inch-Converter-Aluminum/dp/B017VQT5YW/ref=pd_lpo_23_t_2/358-1747184-0009040?_encoding=UTF8&pd_rd_i=B017VQT5YW&pd_rd_r=c92e0606-6922-40bf-8691-b3989882b6db&pd_rd_w=eTcEi&pd_rd_wg=wEvUL&pf_rd_p=ad2d1e6e-bc60-4795-b4c0-2dbd35f6678d&pf_rd_r=Z3ZX2WGHKTW3VHYPWNJ4&psc=1&refRID=Z3ZX2WGHKTW3VHYPWNJ4

Or even this:
https://www.aliexpress.com/i/32948126404.html

If you're having trouble getting power into the drive simultaneous to it being initialised by the camera, you could use this adapter:
https://www.amazon.com.au/Bi-Directional-Adapter-JM20330-Chipset-Dongle/dp/B07M8S8MCM

And here's a ready to go fake CF card that takes Cfast cards
https://www.amazon.com/UREACH-CFast-CF-adapter-2-PACK/dp/B016PA1I3G

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crop_rec and derived builds / Re: 3K/UHD 5D2 Raw development and Other Digic IV Cams

« on: October 27, 2020, 07:56:40 AM »

Hello nice people.

I bought one of the first 5D MkII some years ago and tried Magic Lantern too, but then stopped working with my camera. Now due to Corona I need to use my 5D2 for filming again, since I can't afford a new camera.

I would like to do some tabletop clips and want to get the best quality. Now when I installed Magic Lantern some years ago, it was starting to be capable of recording RAW. But now it seems it can do much more?

If you don't mind, could anyone give me a short glance of what happened here? I have to get the camera ready until tomorrow. I installed the newest Magic Lantern but did not succeed to make it film e.g. Full HD RAW at 25 or 30 fps.

I obviously failed to find a complete install for all the new software that is developed here, I don't even understand what is possible. So my question is: Is there a short description here of what can be done with the software and is there a complete stable setup with all modules?

What is filming with crop, what is this 1:1?

Most important for me: Can someone please help me make at least Full HD filming in RAW work? I have a Komputerbay 1000x 64GB. I don't have the time to read though the 55 pages of this thread until tomorrow, so I'd appreciate help very much! Thanks!

This is a development thread, so general use questions probably won't be welcomed here. The most advanced 5Dii builds are to be found here, but most with only one aspect of the camera enhanced at the cost of useability and stability. If you 'need' a reliable camera, you're stuck with general builds or the default 5Dii video.

The camera sensor is 5000 X 4000 ish, and there's no chance of recording the values of all those pixels at 24+fps so you either lower the frame rate, or you throw out pixels. One way is to throw out pixels on the borders, so using the central ones (1:1) for a smaller sensor but a pretty perfect image. Or you can throw out every second or third pixel in the horizontal or vertical directions so you end up with stripes that span the whole sensor, which deinterlacing algorithms can deal with (but more image artifacts, moire especially).

In general, you can get 'reliable no dropped frames' for a few seconds, 'risk of some dropped frames' for a minute or so for 10bit 1080p(ish) at 24fps.

I'd check the amazing work done by Reddeercity recently, check his YouTube videos for links to the right firmware and guides, but only if you can re-film and spend time getting the settings right as this is bleeding edge.

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crop_rec and derived builds / Re: 3K/UHD 5D2 Raw development and Other Digic IV Cams

« on: October 02, 2019, 08:40:31 AM »

Standard interlacing would take 2 lines (to make sure you have RGBG included within that line) per stripe, and then break a 25 frame/s (40ms) timeline into a 50 field/s timeline, packing an 'upper' and 'lower' fields (20ms) taken sequentially but packed into one 40ms frame as far as the codec is concerned.

If you want max HDR and framerate in low data rate (ignoring compression), then you would have a different gain or exposure time on each stripe. Since I don't think the 5D2 can do different exposure times for individual stripes, then you have a few options:

1) In frame 1, you have the up field low gain, the down field high gain, then in frame 2 you have the up field high gain and down field low gain. This minimises the time that errors can accumulate that are hard to correct for (motion).

2) It may be possible to actually interlace using single (incomplete colour) lines, RG lines and GB lines, as long as you invert which one has the gain per field each frame

3) If you have the option to sample the pixels individually, you could effectively interlace in stripes of 2 lines (complete colour data) in horizontal and vertical directions, with each RGBG subset alternating high-gain, low-gain, then low gain, high gain, for 4 fields / 2 frames. This would minimise the chance for errors while maximising dynamic range and frame rate for the lowest data rate.

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crop_rec and derived builds / Re: 3K/UHD 5D2 Raw development and Other Digic IV Cams

« on: September 02, 2019, 12:24:23 PM »

Hey, just wondering if there is any way to get an interlaced mode enabled for 5Dii 1:1 pixel 3 x crop mode (10bit raw), without dual ISO? It would give us 1920 x 1080 @ 50fps for half the data rate?

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crop_rec and derived builds / Re: 3K/UHD 5D2 Raw development and Other Digic IV Cams

« on: August 13, 2019, 07:54:22 AM »

Thank you for your awesome work, I've been having a blast with 1920 x 1080 (ish) 10bit 24fps RAW

I was wondering, since Avisynth has such great deinterlacing modules, would it be possible to do a 1080i at up to 30p (60 frames) per second?

The only reference to interlacing I could find on this site was to do with doing HDR and interlacing the light and dark exposures.

This would mean that effectively you were capturing 1920 x 540 worth of bandwidth, but easily able to interpolate it to double frame rate full resolution.

Also, I understand that LJ92 lossless compression isn't yet unlocked in 5Dii, but I was wondering what the current status is or whether it is off the development map (if I've missed the ML thread, let me know).

Until I can afford a BMPCC this has been fantastic