Recovering corrupt PRORES

Shooting 4K Prores on my BMPC4K.

One of the files transferred appears to have become corrupt somehow. It will not open in QT player or VLC Player, and will not import into Adobe Premiere, gives me an "unsupported file format" error.

The file is 258 GB. I have been trying to recover video from it for the past week or so. Currently using Grau GmbH, which was able to recover maybe 85% or so, but not the whole thing. I am trying it again with some different settings, so we'll see how that goes.

In case I still cannot recover the whole file, just wondering, if Aeroquartet Treasured is a different process and if I might have better success with them. I am not on a Mac, so transferring to a Mac is a bit of a hassle, but obviously for a full recovery, I would be able to do that.

Any input would be helpful. Thanks!

uhm if you are on windows computer download
free go pro studio (to obtain cineform codec on computer).

free utility called VirtualDub from here :
http://www.virtualdub.org/download.html

later download this extension to allow to import by ffmpeg structure
http://sourceforge.net/projects/virtual ... putplugin/
copy plugin in plugin folder of virtual dub

open virtual dub and go to menù file/open
select your quicktime BUT NOT CLICK ON OPEN
in bottom section of window select ffmpeg import instead generic.
then click on open
this allow you to load every bit if is readable from file.
please take Maaaaaaaaany patience be cause before to show you try to read all 258gb of file.
also if header is corrupted virtualdub try to read raw data, and could save your shooting.

anyway, virtual dub Cannot save mov prores, but only an avi.
my suggest is : save in a good codec like cineform (setup high quality in option), you can do after install of free go prostudio.

this allow you to save all quality of original prores.
good luck

I actually wrote some scripts a while back that would allow Vdub to use VFW to read Cineform from GoProStudio and then feed the decoded video via VFW ffmpeg to allow it to export in any format ffmpeg supports. Let me know if you can get the video to play in Vdub to begin with and if you want I can try to dig out the old stuff if it helps.

PRORES metadata are located near the end of file and you need it to open the PRORES file. It looks that the EOF and correspondingly metadata have been lost. You may need a specific program to restore it, they exist.

Shoot some footage last weekend on a Shogun in 4K ProRes 422. Got back to the office and transferred the footage using a USB 3 connection. Somehow stopped responding. Somehow this ended up corrupting the ProRes file on the SSD and erasing parts of the data... Can be seen in a HexEditor, JUST FOR VISUAL REFERENCE.

If you are on Windows there is a way to recover lost data from hard drives (might work on C-Fast too) using Recuva. If you Recuva the file and then try GRAU that may take it all the way.

In the end, I was able to recover the ProRes file and even restore it. I had some audio issues, but recorded audio separately anyway. What a process!

pay very very attention to USB 3.0 connection!!!

usb 3.0 must be a standard, but unfortunately there are a lots of issue about compatibility under win and mac, where if you lucky, your connection is slower than you think, in other situation combination of certain controller on USB adapter of disk/nas/docking station against chipset of motherboard port cause you :
- disconnection random
- corrupted data in random way
- damge of data in original drive

and so on... i discovered it with my dismay...
this a reason be cause major nas box (8-10 bay) have their pciexpress card (esata) to be sure that they not this kind of problem.

before to discover this problem between chipset (my actual asus have 12 3.0 usb with three different chipset that drive these port, only one work fine with sharkoon 8 bay) i was in an hell where i changed tons of nas boxs, be cause i not thought that could be ports the problem.

if you move few data (like most of people) you don't notice problem, under 1-2 gb the data trasfer is too low to notice problem or stress chipset, but when, like us, we move terabyte (i shoot raw only 4k), we notice the problem...

bad couple of chipset are :

– JMICRON JMS539 + NEC/RENESAS D720200
– JMICRON JMS551 + NEC/RENESAS D720200
– JMICRON JMS539 + ETRON EJ168A
– JMICRON JMS551 + ETRON EJ168A

when you have these chipset on motherboard, and you put external device with these other chipset you have an high risk of problems
check your chipset, and eventually add an additiional card to avoid these couple.

The SATA/USB bridge chips overheat with fatal consequences for the data integrity. I had lots of problems with them and finally just glued a radiator to the chip and added a pair of extra fans to the computer HDD bay.

And BTW. You should mount the SSD read-only.

Thanks, everyone! I will give VDub a try.

~Chris

Okay, that is not working.

I loaded the FFMPeg plugin and tried opening with "FFMpeg Supported Files" selected in the "Files of type" field. Is that what you are referring to, or is there something else I'm missing? When I did this it just gives me an error that says "Unable to open file."

Chris

uhm if you are on windows computer download
free go pro studio (to obtain cineform codec on computer).

free utility called VirtualDub from here :
http://www.virtualdub.org/download.html

later download this extension to allow to import by ffmpeg structure
http://sourceforge.net/projects/virtual ... putplugin/
copy plugin in plugin folder of virtual dub

open virtual dub and go to menù file/open
select your quicktime BUT NOT CLICK ON OPEN
in bottom section of window select ffmpeg import instead generic.
then click on open
this allow you to load every bit if is readable from file.
please take Maaaaaaaaany patience be cause before to show you try to read all 258gb of file.
also if header is corrupted virtualdub try to read raw data, and could save your shooting.

anyway, virtual dub Cannot save mov prores, but only an avi.
my suggest is : save in a good codec like cineform (setup high quality in option), you can do after install of free go prostudio.

this allow you to save all quality of original prores.
good luck

I'm having the same problem. Shot a prores HQ clip with BMPC. Camera lost power during shot and the clip metadata is corrupted. How can I recover?

Ben

Okay, that is not working.

I loaded the FFMPeg plugin and tried opening with "FFMpeg Supported Files" selected in the "Files of type" field. Is that what you are referring to, or is there something else I'm missing? When I did this it just gives me an error that says "Unable to open file."

Chris

uhm if you are on windows computer download
free go pro studio (to obtain cineform codec on computer).

free utility called VirtualDub from here :
http://www.virtualdub.org/download.html

later download this extension to allow to import by ffmpeg structure
http://sourceforge.net/projects/virtual ... putplugin/
copy plugin in plugin folder of virtual dub

open virtual dub and go to menù file/open
select your quicktime BUT NOT CLICK ON OPEN
in bottom section of window select ffmpeg import instead generic.
then click on open
this allow you to load every bit if is readable from file.
please take Maaaaaaaaany patience be cause before to show you try to read all 258gb of file.
also if header is corrupted virtualdub try to read raw data, and could save your shooting.

anyway, virtual dub Cannot save mov prores, but only an avi.
my suggest is : save in a good codec like cineform (setup high quality in option), you can do after install of free go prostudio.

this allow you to save all quality of original prores.
good luck

Bad thing, try the suggest of c.a.m in some previous answer, if ffmpeg and vdub not work i think will be difficult to recovery, but never say never, May be more options that i don't know

Inviato dal mio E6653 utilizzando Tapatalk

Before using the old and very outdated original VirtualDub (vdub) better use this modern version which imports and exports ProRes MOV and also supports Cineform out of the box:
https://sourceforge.net/projects/vdfiltermod/