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  1. Member
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    Hello.

    I have a few FLV files that were located on a partition with a bad file system. I've used windows own error-checking program and fixed the said partition. Problem I can't play these files at full length anymore. Let's say I have a 3hr video and it can play only the first hour or so. I've tried using FLV editors/fixing programs but all just see the first part of the file until the file system error was (HDD BAD).

    Is there any way to recover the full length of these files?
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  2. Member Budman1's Avatar
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    Depending on the codec used, I have often corrected FLV videos with a hex editor. If the file is truly damaged in one area, it is often possible to clip that portion between certain hex bytes (x08/x09). Bear in mind, damaged video is damaged and you have no way of recreating this data and will lose that portion. It may be that some other problem is causing the failure like damaged or missing time codes which would need other rescue options.

    How large are these files and what is the MediaInfo information? Does the MediaInfo say the file is really 3 hrs long or 1 hr in length?
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  3. Member
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    Originally Posted by Budman1 View Post
    Bear in mind, damaged video is damaged and you have no way of recreating this data and will lose that portion.
    Yes, I'm aware. If I could recover the rest of the file and lose only a few seconds seems like a good trade off.

    Originally Posted by Budman1 View Post
    How large are these files and what is the MediaInfo information? Does the MediaInfo say the file is really 3 hrs long or 1 hr in length?
    Here's the media info:

    Code:
    General
    Complete name                            : E:\#capture\CV5062810.flv
    Format                                   : Flash Video
    File size                                : 1.30 GiB
    Duration                                 : 1h 36mn
    Overall bit rate                         : 1 929 Kbps
    
    Video
    Format                                   : Sorenson Spark
    Codec ID                                 : 2
    Width                                    : 320 pixels
    Height                                   : 240 pixels
    Display aspect ratio                     : 4:3
    Frame rate mode                          : Variable
    Bit depth                                : 8 bits
    
    Audio
    Format                                   : Nellymoser
    Codec ID                                 : 6
    Duration                                 : 1h 36mn
    Channel(s)                               : 1 channel
    Sampling rate                            : 22.05 KHz
    Bit depth                                : 16 bits
    Delay relative to video                  : 870ms
    The actual length is about 3.5 hrs. If I import the file in some flv editors it halts at 39% so I know the ballpark where it's damaged. Any way to bypass those bits with a metadata creating program so they're treated like video error not end of file?
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  4. Member Budman1's Avatar
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    Okay, yes as I said you can clip parts out but, to me, the MediaInfo says

    File size : 1.30 GiB
    Duration : 1h 36mn
    Overall bit rate : 1 929 Kbps

    That shows roughly 2,000,000 bits per second and the video is 1,300,000,000(bytes) x 8(bits in byte) or 10,400,000,000 bits.
    So 10.4 Gbits / 2 Mbits = 5200 seconds / 60 = roughly 87 minutes. That's about the 1 hr and 36 minutes shown not 3 hrs.

    So unless you right click the video and choose properties and it shows a lot more than 1.30GiB, it is NOT 3 hours long.

    If the file is indeed large enough to be 3 hours, I can send information on how to clip out segments manually with a hex editor. I also wrote a program to replace the Metadata or remove it completely so MediaInfo extracts the correct information from the video and doesn't just take the Metadata. It fixes simpler problems like messed up time codes and incorrect Metadata but your problem sounds much worse.

    First check the video properties and see how long the file actually is.
    Last edited by Budman1; 18th Jun 2013 at 01:39.
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