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Honestly the sync isn't that accurate between my 4k and 4k+ cameras (need to shave off a few frames from the beginning of one of the videos) but that's to be expected because of wifi. If you have good wifi you might be able to get them to sync accurately. I wonder if the 1.4.3 firmware sync...

I figured out the way to set custom Wifi settings including station mode on the yi 4k+: https://github.com/irungentoo/Xiaomi_Yi_4k_Camera/tree/master/4k%2B/wifi I also made this small program to control multiple cameras at the same time in order to film 3d video with my 4k and 4k+ cameras...

I looked at it quickly but I don't see anything wrong with your autoexec.ash file. I think I saw the yi guys say somewhere that it was impossible because the hardware doesn't support it.

I just tried it and it worked. My command to set it to 320kbs was: writel 0xA06C7230 0x4E200 Recording at 4000x3000 at 60fps isn't supported by the sensor and the normal yi 4k doesn't have nearly enough processing power to handle that resolution at 60fps.

It's done. I also reorganized the bitrate mods for the 4k and the 4k+ into one directory because they kind of are the same mod. Let me know if something broke.

Some bitrate comparisons between 200mbps and 135mbps. Raw files can be found here: https://mega.nz/#F!gK5ABTDJ!0am0xFmLq7AMbmZveSzNbQ I think there might be something else limiting video quality other than the bitrate. It looks like there's a bunch of configuration files that configure the...

0xA065BDFE + 0x10 = 0xA065BE0E 0xA065BDFE + 0x20 = 0xA065BE1E You can use your operating systems calculator, most have a hexadecimal mode. Also this might be more useful than that command, it should make the 2704x1520 60fps mode output 2560x1440 but I have not tested it or anything. #set...

No, that won't work, all it's going to do is change the bitrate of that resolution. This might however: t app test chg_res 12

250mbps bitrate kind of works. It's strange because sometimes it gives a slow sd card error after 1 second and sometimes it works and continues working for a few minutes which leads me to believe that there's something causing this that isn't the speed of the sd card. If the sd card was really...

You need to rename the firmware file to firmware.bin, put it in the same folder and then double click unpacker.bat It looks fine but your sections still have the headers attached.

I don't see anything wrong with that screenshot. What firmware did you try it on. It works on all the 4k+ firmwares and the latest 4k firmware.

My firmware unpacker now works on yi 4k firmwares: https://github.com/irungentoo/Xiaomi_Yi_4k_Camera/tree/master/firmware_unpacker

This is where I found the link: https://www.reddit.com/r/yi4kplus/comments/7655oq/yi_4k_october_13_2017_beta_firmware_version_1318/

Looks like there's a new beta firmware out: 1.3.18. Mods have been updated for it. Maybe, I don't know. There's plenty of other things that could be modified.

These are likely just default modes in the code for the H2 chip. The HDR modes don't have any corresponding sensor modes so there's no way to make them work.

If you look on the sensor summary pdf, you will notice that there is nothing on it that suggests that it supports hdr. For photos I'm pretty sure there's a way to write a script that takes multiple pictures with different exposures in a row that you could then combine after into an HDR picture...

I don't think they will ever be added because the sensor doesn't officially support hdr.

https://github.com/irungentoo/Xiaomi_Yi_4k_Camera/tree/master/4k%2B/increased_framerate 4k@70fps works when I overclock the dsp/core slightly. Now I need to figure out why it's making this error when I try increasing it to 75fps. [CORE:th6:104986] Assertion failure at...

Nice, that might be very useful.

Yes, it's on the soc but it only runs on one of the cores of the arm64 cpu and 66MB of ram. I managed to figure out how to actually increase the dsp and core frequencies. There was an unused branch in the code that sets the clocks to what I assume are the default H2 clocks writel 0x45d6b8...