Author Topic: Possible to change video file prefix from MVI or IMG?  (Read 7244 times)

tmcdanel

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Possible to change video file prefix from MVI or IMG?
« on: October 15, 2014, 05:36:33 PM »
Right now it is set for MVI so all file names look like this: MVI_0289.MOV

Can i change this?
to something like MVA to give MVA_0289.MOV

How about with jpegs?
Currently it is saving: IMG   So files are named IMG_0243.jpg
Can i change it to IMA to get  IMA_0243.jpg

How about on the T5i?

The reason i am asking is i use two cameras, a T3i and T5i, and i want to clearly distinguish the products of the two cameras.
Magic Lantern Nightly 700D114 build 2016-06-13
 Canon Rebel T5i (1.1.3) 700D - EFS 18-135mm & 18-55mm & 300mm lenses
MacBook Pro OSX 10.9 Mavericks

dmilligan

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Re: Possible to change video file prefix from MVI or IMG?
« Reply #1 on: October 15, 2014, 06:19:10 PM »
There is a function in the Canon firmware that lets you change the file prefix, but it's somewhat unreliable. Why not just use the metadata?

tmcdanel

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Re: Possible to change video file prefix from MVI or IMG?
« Reply #2 on: October 19, 2014, 09:39:54 PM »
DMiligan, thanks for the reply. To answer your question, the metadata is stored in the file's resource fork on a Mac. I can look at it with GraphicConverter, which is what use for sorting but it is not handy.

A designation in the file name would be much handier. Your answer "There is a function in the Canon firmware" does not indicate how to try this function. Are you saying it is in the standard menu?
On both T3i and T5i?

I assume that ML does not address this.
Magic Lantern Nightly 700D114 build 2016-06-13
 Canon Rebel T5i (1.1.3) 700D - EFS 18-135mm & 18-55mm & 300mm lenses
MacBook Pro OSX 10.9 Mavericks

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Re: Possible to change video file prefix from MVI or IMG?
« Reply #3 on: October 19, 2014, 10:22:06 PM »
I've never seen it for video but for photos dual_iso can do this in ML right now(it misses some), there should be a custom string option in the canon menus as well, but it does ALL images. I personally use it for bracketed shots, as written by a1ex (1 or 2 years ago) with some updates to keep it current with ML changes. Imho it was very reliable with the advanced bracketing and should come  back to mainline.

dmilligan

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Re: Possible to change video file prefix from MVI or IMG?
« Reply #4 on: October 19, 2014, 11:10:17 PM »
Any decent photo catalog/workflow program (Lightroom, iPhoto, darktable, Aperture, Bridge, etc.) should let you sort/view/filter/etc based on any metadata (camera, lens, expo settings, rating, etc.). If you're not using such a program to manage your photo library, you should be. I don't ever care or even really see what files are named as I import, edit, and manage photos entirely within Lightroom.

Your answer "There is a function in the Canon firmware" does not indicate how to try this function.
see fileprefix.c/h
Code: [Select]
/* only one module (task, whatever) can set a custom prefix; all other requests will be denied */
/* returns a "key" with which you can restore the file prefix (so it won't get restored by mistake) */
int file_prefix_set(char* new_prefix);
(this function is just a ML wrapper around a Canon property: PROP_FILE_PREFIX)