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Activity Forums DSLR Video Canon DSLR recorded a random DAT file amongst the MOV’s

  • Xiaofen Zhang

    January 4, 2016 at 5:11 am

    Thank you for all the info! I am a videographer. I used Canon 6D and recorded a speech at a wedding yesterday. There were several speakers and it went on for close to 25 minutes. I didn’t press stop and record even once thinking it just will split the file until the 29 minutes limit is reached, which I will never do again. So what happened was that the camera overheated and shut down at around 24 minutes, suddenly went black. I kept recording onto the same card for the rest of the night. After I downloaded the data, I found a DAT file over 4GB, and I found this thread. It happened that my chinese cousin is here and found an identical service by a company in China doing business on They did a great job for less than $30, recovered the file for me within a day. But it only had 13 minutes of movie. Now I wonder if the second part of the movie’s data is permenently lost since there was only 1 DAT file. For the people who had this problem, did you recover all your recording or just part of it? Thank you!

  • Xiaofen Zhang

    January 26, 2016 at 6:41 am

    The site you recommended is very good, but a little pricy, it’s $79 for 10 minutes of DSLR clip. They have this “Treasured” free diagnose software that let you see the clip which is awesome.
    But since I’m Chinese, my cousin found an online service store under App “TaoBao” (A chinese online platform that has all kinds of stores selling merchandises or services) who does the same thing. I got a 9 minutes clip repaired for 100 RMB, which is 15 US Dollar:) But they only communicate on TaoBao or WeChat, and they don’t use Google Drive, etc. only take files uploaded via the Chinese web “Baidu”. And payment is something called “AliPay” which is the Chinese version of Paypal. If you have a Chinese buddy, this can be done.

  • Bill Prickett

    June 9, 2016 at 7:53 pm

    IT WORKS!!!
    I just used it on a clip shot with a Canon 5d3 in which the AC Adaptor popped out of the slot and the camera shut down.
    The service works and the people are very helpful.

  • Jack Stevenson

    April 28, 2017 at 6:38 pm


    I have the same with a 5D mk4, the power was cut while recording.

    my .DAT files are the last files on the card and are zero KB, is this the same as those of you who have had footage recovered from .DAT files?

    Also the clips previous to the .DAT files reach their 4GB maximum and I cant work out if there should be footage in the .DAT files.

    Thanks in advance.

  • Julien Barraillé del santo

    May 1, 2017 at 8:45 am

    Hi all,

    I was filming with a canon 6d when it just shut down while shooting. The file appeared as a .DAT instead of .MOV.
    The cheapest way I managed to fix this was with video repair software from Grau.
    The cost was 35€ for repairing 5 files. It did the job perfectly, the file has been recovered and I could use it for the edit.

    Hope this helps.

  • Jack Stevenson

    May 1, 2017 at 2:31 pm

    this has happened to me twice and both .DAT files show as zeroKB. I’m not sure weather to believe it twice a row!?

    anyone whose recovered footage from a .DAT did you have the same??


  • Julien Barraillé del santo

    May 1, 2017 at 3:48 pm

    My .DAT file contained 230mb of info. This means it has something in there to be recovered, zero Kb means there is nothing to rescue. That software I used to recover the file is Grau GmbH video repair. You first download a trial version to see if your file is “rescuable”. It will rescue 50% of the file, upgrade by paying around of 35€ and you will be able to rescue 5 video files. This is the lowest cost I found.

  • Jack Stevenson

    May 1, 2017 at 4:02 pm

    Thanks for the reply, Im confused as to why it would of created the file if there was nothing in it.

    I’ll check out the software. Thank you!

  • Migs Castillo

    September 30, 2017 at 6:14 am

    hi guys,, i have a DAT file also , and got it from my shooter’s 6D, is aeroquartet Legit? it gave me a quotation worth 199 dollars, its a 17:50 mins nearly 18 mins, and its the whole entourage of the wedding! im willing to pay if its going to fix my DAT file.. please help me

  • Steve Crow

    November 6, 2017 at 8:40 pm

    It sounds like you managed to solve this problem but has someone pointed out to you that you can only record aprox. 12 minutes at a time on a Canon unless you use Magic Lantern software, then I’m not sure how long you can record. So that’s why I don’t normally recommend Canon DSLRs to record long speeches. What you have to do is to stop recording and then a second or so later start recording a new clip – if you time it right it can be OK, like during a laugh break or other interruption.

    I hope this helps you in the future


    Steve Crow

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