possible to fix video file?

[gil.cabuhat]

i was cutting and pasting a video file from an SD card to a network drive. at about 25% copied, the computer i was using crashed. i rebooted my computer and found that the file had been deleted from my SC card. i ran the video file that was copied onto my network drive and found that the 1st 30 seconds of the 3 minute video worked. i plugged in my SD card and found that my computer copied this file onto it G:/ReadyBoostPerfTest.tmp. i then used recuva to see if get that whole video file. i managed to get the file but that stupid 8MB ReadyBoostPerfTest.tmp file overwritten some parts of my video file.

is there a way to repair my video file using the partial file on my network drive and the file that was recovered using recuva? like somehow see exactly ReadyBoostPerfTest.tmp file overwritten and and take the good parts from the network drive and splice it in the recovered file from recuva?

below are some detail on the recovered file from recuva


Filename: _OVI057.AVI
Path: G:\_IDEO

Size: 162 MB (169,770,400)

State: Poor

Creation time: 4/15/2017 06:11

Last modification time: 4/15/2017 06:14

Last access time: 8/8/2018 00:00

Comment: This file is overwritten with "G:\ReadyBoostPerfTest.tmp"

256 file cluster(s) overwritten (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, ...)

5181 cluster(s) allocated at offset 20555

 

[cherry blossoms]

From the looks, it seems the beginning of the long file you recovered is the part that is messed up, and you are looking to make a recovery using the 30 second video, and your recovered "file"?

Please note, with recovery from flash, there is a very good chance the "information" you have recovered is all just garbage anyways.

While you can copy sector by sector to sector by sector on a HDD, this is a quite laborious hand operation and you would need to rewrite all the "next sector" links as you go. This is assuming that your you have complete sectors up until the boundary you seek, and that none of this is allocated, but not written, or incomplete sectors within the cluster. It's ALOT of clusters to have to do that to. The danger of missing that info is crosslinked files.

Depending on how fault tolerant your video editing application is, you MIGHT be able to backup the 2 files, then xcopy the 2 files together, then edit and excise the damaged segment. Again, big if depending on the assumptions your video editing application makes, how it handles i-frames, if the recovered data is actually video information that just needs header information to know how to decode it, etc.

HxD MIGHT be useful as well, but also laborious to decide and specify exactly where to concetenate, provided you can find two matching points and can specify your offsets correctly.