Longer recording time with different filesystem

[Lorenzo Di Pietro]

Hi guys, 

I'm not a ARM developer (just a journalist, although i was an engineer) and I'm new to Magic Lantern, as I bought a canon 5D just a week ago. I'm testing Magic Lantern right now and, oh boy, it's great!

About the recording limit to 4Gb fixed by the FAT32 filesystem, I was just wondering if could it be possible to allow the 5D to write to another filesystem like NTFS, or other Apple/Linux filesystem. I suppose that an NTFS or whatever module could be taken from any other ARM device, like my very old stupid Network Attached Storage, which recognizes lots of file system.

What do you think?

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[Huey Lee]

I think it's hard to do so, otherwise Canon themselves could have implemented that for 5D3 or 1DX. Would be great if it's possible though

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[Wesley Clouden]

yep that been on my mind for last 6 weeks cooking some 7D version
but your have a point

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[g3gg0]

"too hard" is in my opinion never the reason for file system decisions in consumer devices.
FAT is common, robust and is relatively cheap to license :)

[nanomad]

And it's better for flash drives too

[nicolas pena]

There has been already working versions with exFAT (which does not have this limit) but it looks that the recording is halted by a counter. That is, the software does not try to write to the card over that limit so the problem persist even though the memory card file system does not impose such a restriction.
Maybe we could look at the firmware looking for the constant (4*1024*1024) which could be being used to compare the present file size plus what is going to be written prior to the commit of data to the card and place a higher one IF a exFAT partition is being used (wild guess).

Nicolas. 

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[Chucho Saldana]

The ARM926EJ-S can access external USB hdd. There some function that
call for hdd drive with in the eos firmware which look different from
the ptp computer hdd function.

[Jim Burnes]

The ultimate solution is to purchase an HDMI digital video recorder and records the live view stream (with on-screen information turned off -- see the docs).

If you're not recording, there is no recording counter to time-out.

Both Atomos and Blackmagic have solutions for this.  Plan to pay around $350 for the BlackMagic and $999 for the Atomos (better solution IMHO).

erisian

[Lorenzo Di Pietro]

It sounds like saying that is stupid to find cheaper solutions, although we can. Why should i put extra stuff, more gadget to recharge (wishing the charge is enough for the time i need it), and spend tons of € ($) buying huge and fast SSDs, when with some workaround i can probably get what I want in my CF card?

Just a personal example: I've to get to a refugee camp in Africa, I have to be light, easy moving and the less possible things to charge and batteries to check while working.The less the better.