Temporary 1 mark IV overheating solution

[BenKatz]

I guess everyone knows the iverheting issue when using the camera.

I did manage to mitigate it by quite a lot - basically the issue seems to be that the screen, when set at 120hz, is overheating the device (the processor) when using the camera more than anything else.

I came to this conclusion after a simple test. I filmed in Videography pro 4k hdr 30fps variable zoom AUTO around the house and on my open balcony (ac off, 32 celsius outside) and got the following results:

120hz OFF: first overheating warning("some functions are turned off...") At 6:39 minutes - at that point i stopped filming because i got bored

120hz ON: overheating warning at around 4 mins, camera COMPLETELY shut off at aroun 5:59. 

No matter what other settings i played with, there seems to be an issue with the device managing the collaboration between the screen at 120hz and the processor, and not necesiarly the cameras themselves. This is sort of good news because there should be a way to fix this in a future firmware.

Until then, just shut off the 120h before using the camera for an extensive period like a photoshoot or filming - as you saw, over 6 minutes and a half of filming at 4k hdr 30fps in summer heat with no heat warning up to that point (and the camera probably being able to stay on and filming for quite a few minutes after that point) is pretty decent actually, for any phone.

Thers no advantage in using 120hz on when using the camera anyway. It is great for navigating the UI though. 

[Janne303]

Hi

And where is the setting to get the screen in 60hz when using camera app or do we need to change all before we use it? U may onto something here

[BenKatz]

No, the setting is in settings - display - high refresh rate, however...

UPDATE:

Even the overheating is inconsistent, I am really beginning to think this is more of a software optimization (resource management?) Issue. This is because i ran the following test a few mins ago:

I played some COD (30 mins maybe), then i stopped using the phone for about 20 mins. I picked it up again (still a bit warm, so not completely cooled off) and started filming around the house only - inside temp around 23 degrees celsius:

120hz screen setting ON this time, 4k at 60 fps, and it ran for almost 13:30 minutes before it shut off this time. As I mentioned above, earlier today i filmed with 120hz ON, 4k at only 30fps(vs 60fps) and the camera force closed after a less than 6 minutes. So this time, at double the refresh rate, it ran for 125% more time.

This definitely doesnt make sens if it were purely a hardware issue, something tells me theres some bad software optimization of the processor of some sort. This is still good news, i would say, meaning that this could mean it can be fixed by a software patch. Remember, even the mark3 had some pretty bad overhearing issues which were fixed with a software patch in the first 1-2 months. 

[BenKatz]

So as an addition for my ongoing testing, it seems after all that the refresh rate of the screen is indeed a big part of the overheating.

A few days ago I tested and as per my previous post, and mentioned that i managed to get way over 10 mins on 4k HDR 60hz with 120hz screen on - however in truth i filmed around the house and there wasn't much movement (meaning the screen didn't really "work" that much) - this was invalidated when i filmed yesterday outside (28 degrees celsius) and walked around (a lot of movement on screen), where it shut down after 6:10 minutes (4k HDR, 60hz, 120hz screen).

HOWEVER, i repeated the test yesterday - 4k, 60hz, HDR, 120hz screen OFF (this seems to be key) outside with a lot of movement, at around 24-25 degrees celsius heat. Result - 12:32 minutes until screen off. 

So from my pov, my definite conclusion is that the 120hz screen setting contributes MASSIVELY to overheating, especially when filming/shooting (using the camera) as there is a lot of movement on the screen. Another thing i observed is that how you hold a phone also makes a big difference, as your hand contributes in heating up and maintaining heat on the phone. I don't have a gimball yet, i'm planning on getting a dji osmo 5 for filming when traveling and stuff - i suspect the combination of filming with 120hz screen off AND using a gimball which will limit heat from holding the phone with the hand could significantly increase filming time, beyond the handheld 12:32 minutes tested (in relatively warm conditions - 25 degrees celsius, no wind). 

I still think a big part of this can be fixed by software. A simple update that will automatically switch the screen from 120hz to 60hz (normal) when launching the camera will help quite a lot, it seems. 

[BenKatz]

Just did another test.

Settings: Videography Pro, 4K HDR @30 fps, seamless zoom, stabilization on, everything else on auto, screen with high refresh rate OFF

Conditions: outside, cloudy but very hot at 35 degrees C, handheld.

Filming duration until app shutdown: 13:09 minutes.

 

 

[Corruptedminds]

It's basically what I've done on my 1 III to avoid overheating

Turn off 120hz

Turn off 5G (for now I don't need this)

Avoid any 4K recording