4.6gb of autosave files

[Anonymous]

Hello,

I have a lot of iPad autosave files now on my PC.  But I can’t see how to open them.  They are in sets of 3 files: IMAGE, index, and meta.xml.  Anyone know how to open these files in Sketchbook?
Thanks!

Long story:

I had 4.6gb of autosave files backed up automatically to iCloud (oct 19), from my iPad. Something happened when I went into the Sketchbook gallery and all that data was deleted from the iPad. I couldn’t recover it to the iPad, but I got it back by restoring the backup to another Apple device.  I tried opening those files in sketchbook on the other device, but again they were automatically deleted. So I restored them again and then backed up with iTunes to my PC, and can get to the files with iBackup.  I looked at them with a hex editor, can’t tell what file type they are.  Different than the autosave files that are created on the pc.

any help greatly appreciated! Would love to get that 4.6gb of work back...!!

[david.lau]

Can you send us a screen capture of the files from your backup/computer?  Do you know the exact extensions used?  i.e. jpg, .sbp format.

[Anonymous]

Thanks for looking to help! 

We didn't set any extensions on the autosave files.  I suppose they are the autosave default.

Screenshots below.

Extracted files:

Backed up files:

Hex view of IMAGE:

[david.lau]

Go here:

https://forums.autodesk.com/t5/sketchbook-forum/ios-11-with-sketchbook-pro-2-x-s-logo-amp-sketchbook...

Look up:  MESSAGE 87 OF 106

There is a video of the way to get your image back from the backup.  I don't think you can do it from the 'autosave' area.

You can also check out:  MESSAGE 75 OF 106 & MESSAGE 79 OF 106.

[Anonymous · Accepted solution]

Hey thanks for the lead!  I added the .data extension to the IMAGE file and I was able to view it in GIMP.  The format seems to be an image broken up into 128x128pixel chunks in RGBA format.  4 bytes/pixel, 128 pixels wide, ~57000pixels tall.  Tempted to write something in Python to reorganize it into one big block.  Unless there is another tool out there or option out there that already does this?