Recovered Video Freezes on First Frame & Screen goes dark

Using PhotoRec to recover lost data
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oj123456
Posts: 4
Joined: 18 Aug 2016, 19:36

Recovered Video Freezes on First Frame & Screen goes dark

#1 Post by oj123456 » 18 Aug 2016, 19:39

Hello,

So the usual story, I spent 2 hours filming for a client on a canon 5d mk3, mostly video, and then pressed erase all without thinking. Now I have recovered the files which have come in this format:

f10069626_ftyp.mov f21166586_ftyp.mov f39862522_ftyp.mov
f10961978_ftyp.mov f21216634_mdat.mov f42385658_ftyp.mov
f12197882_ftyp.mov f21296186_ftyp.mov f43465082_ftyp.mov
f12405242_ftyp.mov f21690874_mdat.mov f44611386_ftyp.mov
f12908282_ftyp.mov f21952826_ftyp.mov f44832954_ftyp.mov
f13186746_ftyp.mov f22685498_mdat.mov f47108410_ftyp.mov
f1332666_ftyp.mov f22833466_ftyp.mov f48253882_ftyp.mov
f13768698_ftyp.mov f23067962_ftyp.mov f51339706_ftyp.mov
f13964282_ftyp.mov f2334842_ftyp.mov f51679866_ftyp.mov
f15063994_mdat.mov f29363898_mdat.mov f54065466_ftyp.mov
f15619130_ftyp.mov f29601594_ftyp.mov f55080314_ftyp.mov
f15966906_ftyp.mov f33565946_ftyp.mov f55394042_ftyp.mov
f16282042_ftyp.mov f35543610_mdat 2.mov f56904122_ftyp.mov
f17232250_ftyp.mov f35543610_mdat.mov f57320634_ftyp.mov
f18007610_ftyp.mov f36454714_ftyp 2.mov f57690554_ftyp.mov
f19169274_ftyp.mov f36454714_ftyp.mov f62215674_ftyp.mov
f20218554_ftyp.mov f37424634_ftyp.mov f6742330_ftyp.mov
f20313914_mdat.mov f38296314_ftyp.mov f7857146_ftyp.mov
f20672314_ftyp.mov f38885562_ftyp.mov f8771066_ftyp.mov
f21099962_mdat.mov f3933946_ftyp.mov f9420538_ftyp.mov


I have no idea what to do now, none of the movies play. The initial frame is perfect but it never goes beyond the first frame, the sound continues for around 3 seconds and then its just white noise and the screen turns black. Please can you advise me what to do as this was a one off event and I am quite frustrated as I ams sure you can imagine.

Thank you so much for this resource you are doing such a great thing for people in my situation!!!

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cgrenier
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Re: Recovered Video Freezes on First Frame & Screen goes dark

#2 Post by cgrenier » 18 Aug 2016, 21:32

Using latest 7.1-WIP, in [File Opt], enable

Code: Select all

 [X] mov/mdat Recover mdat atom as a separate file
and next start the recovery.

If you sort the files by name, you should see that the names alternates between ftyp.mov and mdat.mov.
You need to concatenate each ftyp file with a mdat file:
- If using Windows, run "cmd" to start a terminal, use "cd directory_name" to go where your files are, and run

Code: Select all

type file2.mov file1.mov > test.mov
- Under Mac OS X and Linux, start a terminal/console, use "cd directory_name" to go where your files are, and run

Code: Select all

cat file2.mov file1.mov > test.mov
Play the resulting test.mov file.

If it works, you will need to do the same with each couple of files.

oj123456
Posts: 4
Joined: 18 Aug 2016, 19:36

Re: Recovered Video Freezes on First Frame & Screen goes dark

#3 Post by oj123456 » 20 Aug 2016, 08:30

hello,

I will do that, but not all the files are generating a mdat file, and even the one that arent are only playing the first frame and cutting to black with white noise as audio, my other software tells me there is 99% video content in this data but i am sure its just a codec issue or something really annoying like that.

DO you think i should still do the above as I mentioned only 8 / 62 files were mdat??

Thank you

oj123456
Posts: 4
Joined: 18 Aug 2016, 19:36

Re: Recovered Video Freezes on First Frame & Screen goes dark

#4 Post by oj123456 » 20 Aug 2016, 18:14

Hi just to update you I did this and the resulting files are still the same, some sound for a second or so then white noise and black screen.. if you have any advice on a good program to repair the files that would be amazing, as i know the data is there and not corrupted just something is up with the file

oj123456
Posts: 4
Joined: 18 Aug 2016, 19:36

Re: Recovered Video Freezes on First Frame & Screen goes dark

#5 Post by oj123456 » 20 Aug 2016, 19:00

SOLVED!

If anyone else is having this issue, which is basically that the files were not playable but you have data there, then the next step after combining them as kindly written above with cat file1ptype.mov file2mdata.mov > 123.mov is that you need to get GS - the application is free to download and try, then all you have to do is use a reference file recorded with the same setup (camera/lens etc) and that program will piece it together for you!

THANK YOU SO MUCH

I downloaded GS from here http://www.grauonline.de - i was so happy i actually paid for the license, but there are a bunch of links online telling you how to double the filesize and trick it if you need it for free. Guess on this one the germans actually came through!!!

huges
Posts: 2
Joined: 25 Jul 2017, 20:12

Re: Recovered Video Freezes on First Frame & Screen goes dark

#6 Post by huges » 25 Jul 2017, 20:56

Hi Christophe,
WHAT is or WHERE is "FileOpts"? It doesn't appear in 7.1-WIP

As with oj123456, I do not have a corresponding mdat for each ftyp file.

Why do you name both file 1 and file 2 as .mov when one is mdat and one is ftyp? the command wouldn't be able to recognise these files name right?

Very confused.

My thanks
Hugo


cgrenier wrote:
18 Aug 2016, 21:32
Using latest 7.1-WIP, in FIleOpts, enable

Code: Select all

 [X] mov/mdat Recover mdat atom as a separate file
and next start the recovery.

If you sort the files by name, you should see that the names alternates between ftyp.mov and mdat.mov.
You need to concatenate each ftyp file with a mdat file:
- If using Windows, run "cmd" to start a terminal, use "cd directory_name" to go where your files are, and run

Code: Select all

type file2.mov file1.mov > test.mov
- Under Mac OS X and Linux, start a terminal/console, use "cd directory_name" to go where your files are, and run

Code: Select all

cat file2.mov file1.mov > test.mov
Play the resulting test.mov file.

If it works, you will need to do the same with each couple of files.

User avatar
cgrenier
Site Admin
Posts: 3573
Joined: 18 Feb 2012, 15:08
Location: Le Perreux Sur Marne, France
Contact:

Re: Recovered Video Freezes on First Frame & Screen goes dark

#7 Post by cgrenier » 27 Jul 2017, 06:03

In PhotoRec, there is a [File Opt] menu next to Search, Options and Quit.

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