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I have a new concern and maybe more extreme hack potential. We increase the bit-rate to get a more natural grain, rather than compression artifacts, yet the resolution (even 1920x1440) seems insufficient to resolve the grain. While it likely resolving something close to the film's potential...

I use Premiere Pro, which is a bit pricy. DaVinci Resolve is free and can easily do it.

I was only "calibrating" to a one reel, so it might be too warm on other reels. So ultimately a white balance control is want I hope for. But as the white balance is not changing, it is easier to fix in post for each shot or reel, rather than for each frame with auto WB.

I use -0.5 exposure, -1.5 sharpness and 0.0 tint. I'm now working to add some QP changes and bump the resolution back up. So there might newer FW for tomorrow.

@Hawke Let me know if you try it and whether you like the results.

I have continued to tweak the manual white balance. Here I have included a second sequence that was too blue with the last version. Now is only slightly blue, while the garden sequence still looks good. The RGB gains are 2.0, 1.0, and 0.75. While this came from the same 1966 reel, the white...

@Mac84 To continue further hacking, I'm going to need a serial port to print out memory values. I've found the code for printing, which is how I found the white balance (I looked for were particular error messages where being output.) I have opened the unit once, but I see that the mainboard...

@Hawke I also only purchased Kodak unit as there where hacks for it, although I wasn't thinking I was going to do much more myself. I've only owned the unit for a couple of weeks, taking on the scanning of family reels that I didn't know we had. I have only scanned two reels out of 20+ when the...

I can now build firmware with a fixed white balance, with independent red, green and blue gains. Here is an example comparing stock white balance with fixed WB with RGB gains of 2.0,1.0,1.06 (just guessing.) I removed or bypassed a lot of code with the function at 0x002b7e00, which is the...

Small steps. In this test I used the green gain for all RGB channels. In white balance, green is normally unity.

I've worked out how to disable the Auto white balance, but now need to change the default RGB gains (way too blue.)

I'm getting closer. I've at least found where RGB gains for white balance are set (I think.) Same leader scan, different white balance hack.

Okay this is a change I likely don't need, as a have a CBR of 24Mb/s, which is plenty. The default code on Reels is if (qp < 10) { qp = 0x20; } This suggests this is a rate control for when the image is blank, to prevent an unnecessary high bitrate, and a potential overflow when...

I will give this a try tomorrow. Switching form QP 32 (firmware default) to 0 is overkill, really anything below 15 is. If this a fixed QP, or just a starting point, or a threshold? As the data is modulated, the QP is typically changed within limits. Re: white balance. I had some success...

Custom boot and shutdown images. So firmware is changeable is more ways:

Nice video, I look forward to part two. I'm auto interested in disabling the auto white balance. In the decompressed firmware, the .rbn file I can see the function names related to white balance. If we could find the offset to the AWB_IsLock() function (auto white balance is locked?), it...

Adding back to your hacking options. I found I could push the bit-rate a lot more if I dropped to the resolution only slightly to 1600x1200, still plenty for an oversampled 1080p scan. I was running 24Mb/s. I scanned a 5" Super-8 reel twice, once with stock firmware, and again with these...

I braved it. Firmware C works on serial K3124148BKXXXXX hardware. I have tried original resolution, high bitrate, and got and output of 17698kbps vs 8736kbps of the stock firmware. Both at sharpness -1.5. Stock: high bitrate: Clearly more texture not compressed away in the HBR version. I...

Did version C work on K312 hardware?

Also looking to try this. My brand new unit (version 2.0) has also has a K serial in form K3124148BKXXXXX. No stock firmware image from these new units yet?