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Video Files Not Playable After Recovered
http://forum.hddguru.com/viewtopic.php?f=7&t=38396
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Author:  rlsturk [ May 12th, 2019, 15:44 ]
Post subject:  Video Files Not Playable After Recovered

Hello Guys :)

Formatted or Deleted Video Files Not Playable After Recovered Files Successfully

File Size is Perfect but file is not playing with any of media player :(

Media Player Error (Cannot Render the file)
Image
Anyone help will be Appreciated

Thank you

Attachments:
Untitled.jpg
Untitled.jpg [ 34.29 KiB | Viewed 6480 times ]

Author:  Iurii [ May 13th, 2019, 4:13 ]
Post subject:  Re: Video Files Not Playable After Recovered

Hello,
Please open file in hexadecimal preview. Make and share screenshots of first and last sectors.

Author:  Dananjaya [ May 13th, 2019, 5:27 ]
Post subject:  Re: Video Files Not Playable After Recovered

hi.
is this memory card or hard drive.?i think this maybe a memory card.
and what are the file types.?
are these camera recorded files. if yes what is the camera.
and after deleting did u copy the new files?

Author:  rlsturk [ May 13th, 2019, 22:20 ]
Post subject:  Re: Video Files Not Playable After Recovered

@Iurii @Dananjaya

Attached HXD screenshots..

& this is deleted from Hard Drive
file type is .mp4 from Sony Camera

Attachments:
End.jpg
End.jpg [ 298.57 KiB | Viewed 6404 times ]
Start.jpg
Start.jpg [ 267.18 KiB | Viewed 6404 times ]

Author:  Dananjaya [ May 14th, 2019, 1:17 ]
Post subject:  Re: Video Files Not Playable After Recovered

no valid video files data. sometimes overwritten,NTFS or FAT file system structure damage or encryption.

use RAW recovery.

******

is this seagate LM series rosewood hard drive?

Author:  rlsturk [ May 14th, 2019, 6:26 ]
Post subject:  Re: Video Files Not Playable After Recovered

Drive is 2Tb Portable WD MY Passport 25E1

Author:  MindMergepk [ May 14th, 2019, 6:31 ]
Post subject:  Re: Video Files Not Playable After Recovered

should you need a professional opinion, feel free to contact us @ 03006689939

Author:  hdd_sand [ May 14th, 2019, 11:44 ]
Post subject:  Re: Video Files Not Playable After Recovered

rlsturk wrote:
Hello Guys :)

Formatted or Deleted Video Files Not Playable After Recovered Files Successfully

File Size is Perfect but file is not playing with any of media player :(

Media Player Error (Cannot Render the file)
Image
Anyone help will be Appreciated

Thank you


Where did you saved the recovered files? into a new drive or same drive? is a SD card? did you reformatted via a computer or with the camera

Author:  rlsturk [ May 15th, 2019, 7:59 ]
Post subject:  Re: Video Files Not Playable After Recovered

Yes data saved to new drive & yes card is reformat & use again many times

Author:  hdd_sand [ May 15th, 2019, 11:48 ]
Post subject:  Re: Video Files Not Playable After Recovered

rlsturk wrote:
Yes data saved to new drive & yes card is reformat & use again many times


Well that data is pretty much gone.... the magic statement yes card is reformat & use again many times

Author:  abolibibelot [ May 15th, 2019, 19:09 ]
Post subject:  Re: Video Files Not Playable After Recovered

Just to explain the result you got : there are two different things that data recovery softwares can find, either the actual contents of files, or indexes of files, which kinda work like an address book, telling the system (or the recording device) where the contents of each file are located. When a file is deleted, the index is updated but not deleted: it just says to the system (or the recording device) that those sectors where that file used to be are now free, and can therefore be used to record other files – which is what happens obviously when the memory card is used later on. But since the indexes of those former files are still there (until they get overwritten themselves), a data recovery software can very well display the correct names, sizes and timestamps of deleted files, even though the actual data has been overwritten, which is irreversible; then what is exported is actually a random portion of a new file, it doesn't have a valid header (the begining of the file does not contain the informations required to identify a video file as such) and that's why no media player can read them. When a file is accidentally deleted, there's a good chance of recovering it, but only if no further data is written on the device.
Recuva, a very good free recovery software, assesses the condition of the files it detects, then indicates if a file has been overwritten, and by which other file.
Perhaps you would still have a shot at recovering those files from the hard drive, if it has a lot of free space and hasn't been used too much since the deletion... It could happen that the begining of the file is fine, but the end has been overwritten, in this case, for most MP4 files, they won't be readable anyway, because there's an index area at the end of the file which is required by media players to make sense of the stream of data; but in that case there's a possibility to salvage what's left with a software like Grau Video Repair. Again, for this to work the header has to be valid (in hexadecimal view you should see “ftyp” in the middle of the first line for a MP4 file) and a significant portion of the original file should not be overwritten, so this won't work for sure with that "C0001.mp4" file.
And don't do the stupid thing, which is to attempt to recover a file from a device (a memory card or HDD or whatever) on that same device, because you can't control where the recovered file will be written and there's a high probability of destroying it in the process. I tried to help someone who had done just that (or more accurately, she had handed the card over to a friend working with computers who supposedly knew what he was doing, and it turned out that he did not), but it was too late. She thought that she had copied that one file with the others when she deleted the whole folder, but must have missed it in the mouse selection. To prevent that from happening ever again, I advised her to use a duplicate file remover, to make sure that the files deleted from the memory card have actually been copied to the computer, and flawlessly copied (matching CRC32 or MD5).

Author:  Dananjaya [ May 16th, 2019, 2:22 ]
Post subject:  Re: Video Files Not Playable After Recovered

rlsturk wrote:
Drive is 2Tb Portable WD MY Passport 25E1

Author:  abolibibelot [ May 16th, 2019, 19:44 ]
Post subject:  Re: Video Files Not Playable After Recovered

Dananjaya wrote:
rlsturk wrote:
Drive is 2Tb Portable WD MY Passport 25E1

Right, I read the thread too fast, so the OP already scanned the HDD and only found overwritten files there, while the memory card has been used repeatedly since the file(s) of interest was (were) deleted, so nothing more can be done at this point...

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