Exfat formatting in camera

Started by Tgra, May 12, 2017, 09:17:04 AM

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Tgra

Hi, I've been a magic lantern user for a couple of years now but this is my first post! (Yay)

I know there is a couple of similar topics on the forum but I could not comment on any of them so I'm attempting to create a new one - sorry if this is annoying to anyone..

Here's my issue: I have an upcoming shoot that will be a bit of an adventure where I'm limited on the weight of the gear I can take with me. For this reason I've invested in a Nexto Di cf card back up (64g transferred to that little machine in 12mins, the absolute dream) nevertheless my issue is that I need to format the card on the go after backing up which implies doing it in camera. The card (originally Exfat) is formatted back by Canon to fat32 ( I think? All I know for sure is that it ain't Exfat) and this is a problem to me as this stops all recording at 4go but appears like it is still recording on the camera interface so I can never monitor where the recording actually stopped.

Here's my question: is there / would there be a possibility to convert the CF card to Exfat in camera? Again this has been asked before but most of it was programming/ code tweaks which is all Chinese to me

am working with the 5D mark III (1.2.3)

Thanks to whoever would be able to help a brother out 🙏

Walter Schulz

You are talking about "card_fmt" branch, I suppose. https://www.magiclantern.fm/forum/index.php?topic=13983.0
I can try to compile the most recent nightly build with this patch. Hope to get it done within next 24 hours. Not able to test it on 5D3, though.

a1ex

Quote from: Tgra on May 12, 2017, 09:17:04 AM
[...] this stops all recording at 4go but appears like it is still recording on the camera interface so I can never monitor where the recording actually stopped.

I have a feeling the actual issue might be this.

Related: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] and probably hundreds of other similar topics.

Walter Schulz

I'm about to test what happens if MLV recording is set to ExFAT with card format FAT32. Never tried before ...
EDIT: 650D, card format with FAT32, MLV-Option set to ExFAT.
-> Recording stopped after 4 GB, there is a TMP-file.
I think you are right, a1ex.

Tgra

Thank you very much for coming back to me on that matter - noticed that I didn't even mention how GREATFUL I am for your work with ML, so for that, thank you as well.

So yeah I was aware of the splitting files but I've never actually managed to make that work with any of the post processing workflows I used (MLrawviewer, MLVFS - even tried both Mac and PC in case it would change anything for some obscure reason). These memory cards have been long wiped but I swear most of the time i faced the issue it simply gave me a mess of 1 byte files and temp files.

I'll have to experiment on that again but yeah, I just felt like an in-camera formatting would simply help solving my issues and keep my card's files as neat as can be (Just a bit OCD with that hah). I do not know exactly why but EXFAT also seems to be quickening my data transfer with the Nextodi(??) or maybe it's simply me being crazy...