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  1. Hello, I am new on this forum. I am experiencing a problem with my video files.
    I was on a trip with my GoPro and the memory card was corrupted. I managed to recover the files (photos and videos) but unfortunately, when I try to open the video files, they won't even open. I tried with many media players, I also tried to rename the extensions... nothing. Is it possible to repair or analyze the files? These videos are very precious to us, can anyone please help!?
    Thank you,
    Guillaume G.
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date: Aug 2000
    Location: Sweden
    Search Comp PM
    Try video repair tool. Select a working video file and the damaged one.

    And I would also try different file recover tools.
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  3. Thanks for your answer. I tried to repair with the tool you suggested me. If I copy the scan result, do you think you can help me with it? I don't know much about all this!
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  4. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date: Aug 2000
    Location: Sweden
    Search Comp PM
    DId you get any working video file? If not then it wont work.
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  5. Well, I tested two damaged files. One won't open but I have the scan report. The other one works fairly (Some clean images with lag and then stops)....
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  6. This is what I got from the file I can't open
    Repair session information
    Input file: F:\Gopro please\File0663.MOV (229376 bytes)
    Reference file: F:\Ninh Binh\GOPR9483.MP4
    Output folder: F:\Gopro please\repaired\


    Entropy scan results
    Your complete input file has been analysed in small blocks, and the entropy results show which blocks may contain video data (and which may not). A value less than 0.6 typically means that there is definitively no video data in that block, a value greater than 0.6 means it may contain video data.
    start block (KB) - end (KB) -- entropy (must be higher than 0.6 for video data)
    --------------------------------------------------------------------------------------------
    [NOTICE] entropy 0 - 22 -- 0.217547
    [NOTICE] entropy 22 - 44 -- 0
    [NOTICE] entropy 44 - 66 -- 0
    [NOTICE] entropy 66 - 88 -- 0
    [NOTICE] entropy 88 - 110 -- 0.751336
    [NOTICE] entropy 110 - 132 -- 0.994198
    [NOTICE] entropy 132 - 154 -- 0.994187
    [NOTICE] entropy 154 - 176 -- 0.998214
    [NOTICE] entropy 176 - 198 -- 0.995274
    [NOTICE] entropy 198 - 220 -- 0.995755
    [NOTICE] entropy 220 - 242 -- 0.994024



    Video scan results
    Your complete input file has been analysed for video data and this shows the amount of data found. Note: If no data was found (or less than expected), the entropy scan result above can give you an explanation why no (or not enough) data was found.
    Video data found: 147973 bytes (DEMO version saves only 50% of this)
    Audio data found: 17408 bytes (DEMO version saves only 50% of this)


    Your reference movie
    Video codec: avc1
    Audio codec: mp4a
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  7. This is what I got from the file with clean and laggy images

    Input file: F:\sector1336448.mov (66937270 bytes)
    Reference file: F:\Ninh Binh\GOPR9483.MP4
    Output folder: F:\Gopro please\repaired\


    Entropy scan results
    Your complete input file has been analysed in small blocks, and the entropy results show which blocks may contain video data (and which may not). A value less than 0.6 typically means that there is definitively no video data in that block, a value greater than 0.6 means it may contain video data.
    start block (KB) - end (KB) -- entropy (must be higher than 0.6 for video data)
    --------------------------------------------------------------------------------------------
    [NOTICE] entropy 0 - 6536 -- 0.993497
    [NOTICE] entropy 6536 - 13072 -- 0.999928
    [NOTICE] entropy 13072 - 19608 -- 0.999941
    [NOTICE] entropy 19608 - 26144 -- 0.999927
    [NOTICE] entropy 26144 - 32680 -- 0.999958
    [NOTICE] entropy 32680 - 39216 -- 0.999966
    [NOTICE] entropy 39216 - 45752 -- 0.999918
    [NOTICE] entropy 45752 - 52288 -- 0.992911
    [NOTICE] entropy 52288 - 58824 -- 0.995095
    [NOTICE] entropy 58824 - 65360 -- 0.995201
    [NOTICE] entropy 65360 - 71896 -- 0.990547



    Video scan results
    Your complete input file has been analysed for video data and this shows the amount of data found. Note: If no data was found (or less than expected), the entropy scan result above can give you an explanation why no (or not enough) data was found.
    Video data found: 51184840 bytes (DEMO version saves only 50% of this)
    Audio data found: 682666 bytes (DEMO version saves only 50% of this)


    Your reference movie
    Video codec: avc1
    Audio codec: mp4a
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  8. Member Krispy Kritter's Avatar
    Join Date: Jul 2003
    Location: St Louis, MO USA
    Search Comp PM
    Just for future reference, using multiple players and renaming files/extensions is unnecessary. If a file doesn't work, test in a single standalone player such as VLC. If it doesn't open in VLC, it's generally trash. VLC can play most anything, even damaged files.

    The first file is missing data in the beginning of the file:

    start block (KB) - end (KB) -- entropy (must be higher than 0.6 for video data)
    --------------------------------------------------------------------------------------------
    [NOTICE] entropy 0 - 22 -- 0.217547
    [NOTICE] entropy 22 - 44 -- 0
    [NOTICE] entropy 44 - 66 -- 0
    [NOTICE] entropy 66 - 88 -- 0
    [NOTICE] entropy 88 - 110 -- 0.751336

    The second file, has data, but that doesn't mean the data isn't corrupted.

    As they won't play, and can't be repaired, I'd suspect they are lost. As they are mov files, you could give QuickTime Pro a shot.
    Google is your Friend
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