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Mike



Joined: 16 Feb 2006
Posts: 205
Location: UK

PostPosted: Tue Apr 08, 2008 17:24    Post subject: JPEG Scanner
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hi Sergei,

have a test file (I had some problems with this when attempting a full recovery)..

I have

File size: 1 GB
Mix removed: Yes
Block size 0x84000

Using the above I can see the JPG headers in HEX viewer, but when using the viewer section, I get errors;

'Unexpected Marker 0xnnnn at 0xyyyy'
OR
Out of Buffer

When clicking 'Next' I get 'Data Corrupt: JPEG Load State not valid'

I tried the above after converting to RAW but the Headers are now wrong.

For the JPEG Scanner Parameters I used
Cluster 0x0
Block size 0x80000

I also tried with Block Size 0x40000
(Is the above supposed to be the cluster' size ? Or is the block size as in NAND ?

Nothing I try seems to give any good information. It is something I am doing wrong - I know it Smile
Сергей



Joined: 26 Aug 2005
Posts: 20281

Flash-Extractor developer

PostPosted: Tue Apr 08, 2008 17:29    Post subject:
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1. Cut SA with Dump_Converter / RAW
2. Delete old scan result (JPEG_Scan folder)
3. Set Block_Size in params

Block_Size = 0x80000

0x80000 = 0x84000 / 0x210 * 0x200
(we cut SA)

Leave Claster_0 = 0
We use it for originaly fragmented file recovery.

Check_Size = 0x4000
then bigger - then better quality, but slowly
Mike



Joined: 16 Feb 2006
Posts: 205
Location: UK

PostPosted: Tue Apr 08, 2008 17:59    Post subject:
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Problem solved !!
I hadn't deleted the previous scan results ..

Works like a dream, excellent stuff Sergei.



Mike
Сергей



Joined: 26 Aug 2005
Posts: 20281

Flash-Extractor developer

PostPosted: Tue Apr 08, 2008 18:03    Post subject:
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Thanks :)

Note: Files move from folder to folder

When:
- you work manualy and press "Apply"
- on every step of "auto"
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