Andrew - EOSHD

Just in case anyone missed it here is the hack methodology in full: https://www.eoshd.com/news/this-is-my-canon-eos-r5-recording-8k-video-50-minutes-straight-until-empty-battery-video-evidence/ Here’s what I did during the 50 minutes 8K test: 00:00 – Power on the EOS R5 normal from cold 01:00 – Remove battery card door, camera powers down but power switch remains in “on” position 01:30 – Insert small screw in the battery door sensor as pictured below. Camera turns back on. 02:00 – Set video mode to DCI 8K resolution (IPB codec) to SD card. 02:10 – Hit record 17:00 – Roll to approximately 17 minutes (“overheat” warning icon will be flashing) 17:05 – At this point pull battery during recording 17:15 – With battery disconnected remove SD card and put freshly formatted SD card in the slot instead 17:20 – Push battery back in and power will return, overheat warning is gone and timer is reset 35:00 – Record for another 17 minutes! 50:00 – End of test I could go until the battery died, basically.

It has yet to be proven that 8K RAW goes indefinitely, but yes it is very impressive hardware. There may be thermal throttling or lock-ups somewhere during long sessions, we don't know - but what is now proven without a shadow of a doubt is how artificial the 15 minute limit is and how it counts down on a timer rather than a high maximum temperature cut off point. My opinion gets stronger every day that all this is about segmenting it from the Cinema EOS cameras. But we all know this is a stupid business decision, because most Cinema EOS camera owners wanted to buy an EOS R5 as a b-cam, second body, third body, handheld rig, you name it. In my opinion Canon seems to want to sell every professional shooter a minimum of 2 very expensive cameras for the same shoot - one single hybrid camera at $4000 plus very expensive high margin optics is not enough it seems. Shoot stills? Buy EOS R5. Shoot video? Buy C500 Mark II. Shoot both. Buy both. Yup it is terrible for us who just want to buy the EOS R5 for it's amazing hardware and cinematic images. We're always the one to get screwed it seems. This is why Canon, in my opinion, has been losing video users for years. It is faulty thinking, throughout the company. I don't know which part of Canon is most to blame - USA or Japan? Both? EOS or Cinema? Maybe both? Or do the EOS guys secretly really dislike the politics that the Cinema business has brought to the company and the restrictions it has placed on their products and all the stupid segmentation? Either way, they must change. I am up to 1 hour of 8K H.265 which is very special from a 45MP full frame sensor. It makes it even more frustrating that Canon has turned it into a lemon then! If Canon chose to lie to their customers about limitations on a $700 consumer camera that was boring and unexciting, the passion wouldn't quite be as strong to uncover the truth and fix it... That it is a very expensive flagship camera and the first of its kind in the world, makes it a hugely emotional topic for me & you, and rightly so.

Exactly - if nothing to hide, come out and say it... I honestly think they fear the legal consequences of this. And are uncertain on how to proceed policy wise. Canon are a big committee and do not move quickly on important decisions. It seems obvious to us - Just apologise and fix the problem, give us the impressive camera hardware as the engineers intended it and not crippled version with a firmware timer. For $4000 we are within our rights to request it. But to Canon it is probably all out political nuclear war and all sorts of manager arguments, in multiple departments and even multiple regions. I am sure some in the company are absolutely ashamed of what has happened. But they are not going to go above the level of the CEO and come out and say it publicly. Hierarchies are VERY strict in corporations, especially Japanese ones. We should give them yet more time to respond. It may be that Canon choose to ignore all their customers for 1-2 months completely and then just spring a firmware update on us. Honestly, it wouldn't surprise me if we never get an apology or really any honest answers.

It takes time for camera body to absorb the cold temperatures, and the inside is somewhat insulated. What the fridge does, is to keep the camera a nice 10-15C below the temperature it reports in a normal room. So it has no ambient temperature 'excuse' for overheating, and with no video recorded, no high CPU load excuse either, thus more proof of the timer.

Like I said in the article, I have approached everybody I know who works for Canon, and one of them is Michael Bravin, ex-ARRI, so we are not talking about the regional chinless wonder junior sales reps but people who have clout, who could make a difference and who I assume to be ethical people willing to help. Let me tell you... I have got nowhere fast. The same with Canon UK. I believe they are probably just sticking their heads in the sand or probably don't even understand the depth of customer anger there is about this. Or maybe we are a niche who don't make them the extra billions they are targeting so fuck us. Just one of the reason's we've a right to be very angry. Everybody who has spent $4000 on this camera (or even more in many regions) has a right to an honest explanation, and an apology, and most certainly a fix. I do agree that maybe a less harder, pro-corporate position would make for a more harmonious relationship between EOSHD and Canon. But I cannot sacrifice my principals - The right strategy at the moment is to simply carry on speaking the truth to bullshit, with factual evidence to back it up and as many deep technical discoveries as possible ideally with the help of Magic Lantern. We must pool our knowledge. Then Japan can do what the like to be quite honest. The ball has been in their court since day one and will continue to be. If we don't like what they have done, the onus is on us to stop being nice little easily-led consumers and to spend our money elsewhere! Perhaps even in the high end smartphone camera market instead.

Magically Screwed! Thanks for your good work Horshack! I'll be on hand again tomorrow if you need me try anything at this end.

It is because the camera may write the last clip length and 'overheat' timer status to the cripple clock memory when you hit stop on the recording. Going to test a few things around this aspect soon.

Ah Sony are just another bunch of opportunists really, using the suffering of a rival to drum up some more sales - I'm no great fan of the A7S III. I think this is a watershed moment, and I hope it encourages people to spend their money differently. Maybe buy more from Sigma, who are family owned. Let's put business ethics in the spotlight. Let's see what really goes on behind closed doors and what they try to hide from their customers.

The other ugly thing is that I have taken an absolute beating online with people questioning my reputation left right and centre for revealing this timer and behaviour from Canon. Canon meanwhile, brand reputation virtually untouched, not two hoots from them, no statement, no recall and the EOS R5 continues to fly off shelves!! BBC and CNN tech reporters should be all over it. Where are they?

Yes certainly possible but it is one heck of a reverse engineering project with many complexities and arduous effort, and would likely take a long time even for somebody as skilful and experienced as a1ex. I think after being mislead we deserve Canon to come out with an official fix, and a public apology. It would also be smart of Canon to make a development kit so that Magic Lantern didn't have to reverse engineer in order to add modules and code. Can you imagine if developers had to do this to make Android apps?!

Interesting point. I'll see if I can give it a go. First I need to work on a YouTube video showing it going for 1 hour in 8K. That should shut some people up.

On topic please people.

Updated article with more clarifications. It is battery backed RAM not NVRAM EEPROM (that's why the Baidu internal battery pull worked) but the basic workings are the same https://www.eoshd.com/news/canon-eos-r5-so-called-overheat-timer-defeated-by-a-single-screw-in-battery-door/ A lot to get our heads around, so please if you are commenting on this topic, make sure to read the full article first.

Yes that's true. Lot's to try next. I'll see what state the clip is in and see if I can still transcode it in EditReady. The 8K HEVC is a bitch to edit! So I'll be doing this anyway with 8K material to ProRes. The main goal for me is not so much the workable workaround but rather the truth gets out, and to force Canon's hand in removing any artificial limitations. Your contributions here have become invaluable, so thank you. Yes this could indeed work but it'll be beyond the patience of most filmmakers I think. I'll try @BTM_Pix's suggestion first and see if there is a simple way to get around it and produce a usable last recording...

Looks like somebody has been right?

Magic Lantern just became Magic Screw. Tried the second test differently. Found a way to get the full record times back: https://www.eoshd.com/news/canon-eos-r5-so-called-overheat-timer-defeated-by-a-single-screw-in-battery-door/ You're only supposed to blow the bloody battery door off!!!!

On Friday, I received a message from the lead developer at Magic Lantern. An interesting theory was being put forward by one of their open source contributors, which he believed could defeat the so-called overheat timer on the Canon EOS R5. Initially I was skeptical as to whether it would work! Mainly because the initial real-world tests on my own EOS R5 did not reset the timer. But then, a break-through. Magic Lantern just became Magic Screw! Read the full blog post here: https://www.eoshd.com/news/canon-eos-r5-so-called-overheat-timer-defeated-by-a-single-screw-in-battery-door/

It's worth another look. Quite a few variables and ways to do it. I haven't had the time try everything to be honest. The guy on YouTube has tried pulling the battery during a recording, and got 5 mins remaining. I also got 5 minutes remaining, but stopped the recording first. I thought at this point, if the timer is in RAM then it should go up to 20 mins in 8K not 5. Then I went out and had an ice cream with the girlfriend. So tomorrow maybe I should put more effort in!?

It has parallels with the world in general. We have in Russia today a dying man who has been horrifically poisoned, screaming in agony on a plane and straight into a coma from which he may never pull out. Leader of the opposition to Putin. The RT news anchor tosses the peasant people some lie. "It is low blood sugar. Always carry candy" The low effort of that bullshit, and the distain for the intelligence of the general populace. And it is the same thing with Toneh. Toss the peasants some badly research bullshit dressed up with a whiteboard zapping key phrases at the audience. Pure clickbait. Pure cynicism. Ah you stole the idea... Nobody will notice. Just say you forgot. Whatever. Who cares. End of days stuff my friends. Thank you to all on here who have helped research and inform on the overheating findings these past few weeks.

Amazing how easily people are fooled. Suddenly Tony is considered the source. Makes me fucking sick.

Breaking news... His source was actually the well known EOS DH. The famously relaxed guy who doesn't mind being ripped off at every turn and his journalism work uncredited. The DH stands for "Die Hard" as in die hard Canon fan, loyal to the bone and willing to pay $4000 for broken shit. Not a cross word spoken. You know... A bit like how TONEH is with Sony. I think myself and BTM_Pix deserve a credit and apology in TONEH's next video? Don't you? Let's make it happen. And come up with a little plan.

EOSHD tabs in his browser...

"Breaking news" And people wonder why I take issue with so many YouTubers.

Yeah, I don't pay $4000 to have to reset a cripple clock or disassemble the body. Over to you Canon! (That doesn't mean to say we shouldn't continue to explore and investigate. I find the workarounds shed light on the camera's design and behaviour, which allows us to hold Canon to account with hard evidence).