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  1. Member
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    So, I had a Skype call earlier today and it went really well. I was recording it using "Talkhelper for Skype", which after I tested it several times yesterday, was shown to work just fine.

    Unfortunately...

    My call got disconnected a couple of times and the video file that I was recording is now said to be either corrupted, missing an extension, or some other weirdness. I NEED to retrieve this file! Please, if anyone can offer help, I am desperate right now!
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  2. Member
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    The usual thing to start this analysis is to open the file with mediainfo, put it in view>text mode and post
    the whole info in this forum
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  3. Member
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    Okay, here it goes:

    General
    Complete name : C:\Users\Acer valued customer\Desktop\unknown_pstn_2017.05.10.15.43.17. avi
    Format : MPEG-4 Visual
    File size : 58.0 MiB
    FileExtension_Invalid : m4v mp4v

    Video
    Format : MPEG-4 Visual
    Format profile : Advanced Simple@L5
    Format settings, BVOP : 2
    Format settings, QPel : No
    Format settings, GMC : No warppoints
    Format settings, Matrix : Default (H.263)
    Width : 640 pixels
    Height : 480 pixels
    Display aspect ratio : 4:3
    Frame rate : 15.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Writing library : XviD 64


    And here's the second one:

    General
    Complete name : C:\Users\Acer valued customer\Desktop\unknown_pstn_2017.05.10.15.57.51. avi
    Format : MPEG-4 Visual
    File size : 23.0 MiB
    FileExtension_Invalid : m4v mp4v

    Video
    Format : MPEG-4 Visual
    Format profile : Advanced Simple@L5
    Format settings, BVOP : 2
    Format settings, QPel : No
    Format settings, GMC : No warppoints
    Format settings, Matrix : Default (H.263)
    Width : 640 pixels
    Height : 480 pixels
    Display aspect ratio : 4:3
    Frame rate : 15.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Writing library : XviD 64
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  4. Member
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    To get this info, part of the video header must be intact. One thing to do would be would be to compare
    the Mediainfo report with a known good file from the same TalkHelper source.

    Why is the audio info missing ?

    If these are not sensitive files you could post one to the forum using the upload files button.
    Other than that look at them with a hex editor starting at the top and scrolling down.
    Compare with a known good file
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  5. Try Divfix or DivFix++.
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  6. "FileExtension_Invalid : m4v mp4v"

    Is this a clue?
    Extraordinary claims require extraordinary evidence -Carl Sagan
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  7. Member
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    So, it's the file extension that I need then?
    Okay, how do I go about obtaining that?
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  8. Member
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    As for the audio info supposedly missing, I actually do have a backup audio file that I recorded with another microphone, and it came out well, so for now, I'm more concerned with the video. Of course, I wouldn't say "no" to recovering both in one file.
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  9. Member
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    If you look at the file names shown in mediainfo above, there is a space in the file extension that should not be there.
    I can see a space between the dot and "avi".

    Rename the files to get rid of the space and see if it opens.

    However, even in this state, if you drag and drop the file(s) onto something like mpc-hc,
    they will should still play. Assuming, of course, the files are not damaged internally.
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  10. Originally Posted by DWCJedi View Post
    So, it's the file extension that I need then?
    Okay, how do I go about obtaining that?
    Just rename the file. .M4V instead of .AVI.

    Originally Posted by davexnet View Post
    If you look at the file names shown in mediainfo above, there is a space in the file extension that should not be there.
    I can see a space between the dot and "avi".
    I think the forum software added that space. It does that with long, unbroken, words/lines.
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  11. Member
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    Alright, I'll try renaming.

    I hate to ask such a rookie-sounding question but how do I change/rename the file extension? I can rename the name but don't know how with the extension.
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  12. Like everyone is saying, something looks odd here. Please post a MediaInfo report of a known good video.
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  13. Member
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    Originally Posted by DWCJedi View Post
    Alright, I'll try renaming.

    I hate to ask such a rookie-sounding question but how do I change/rename the file extension? I can rename the name but don't know how with the extension.
    Windows seems to default to hiding file extensions and non-techie users often leave it this way.

    To make them visible, control panel, folder options / view
    deselect "hide extensions for known file types"
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  14. Member
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    Originally Posted by davexnet View Post
    If you look at the file names shown in mediainfo above, there is a space in the file extension that should not be there.
    I can see a space between the dot and "avi"
    I think the forum software added that space. It does that with long, unbroken, words/lines.
    Thanks for pointing out it may be a display issue with the forum software.
    Thought I was on to something for a minute ...
    Last edited by davexnet; 12th May 2017 at 17:17.
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  15. Here is a test. I copied the line from his post but removed the space between . and a, the pasted here:

    Complete name : C:\Users\Acer valued customer\Desktop\unknown_pstn_2017.05.10.15.43.17. avi

    As you can see, the forum software inserted the space again. Here is the same line pasted between code brackets:

    Code:
    Complete name : C:\Users\Acer valued customer\Desktop\unknown_pstn_2017.05.10.15.43.17.avi
    No space added there.
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  16. Member
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    Okay, so I just tried to run the video file, after changing the extension to "M4V", through my trial version of Stellar Phoenix Video Repair... and the preview DID show the video (albeit unstable, shifting between clear and fuzzy). So there's definitely something there to be retrieved. Whew!

    Next, I will try uploading a working video file, possibly even one from a previous Skype call which DID record well.
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  17. Member
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    General
    Complete name : C:\Users\Acer valued customer\Desktop\puredzire_2017.05.09.13.38.15.avi
    Format : AVI
    Format/Info : Audio Video Interleave
    File size : 5.09 MiB
    Duration : 1 min 2 s
    Overall bit rate : 689 kb/s
    IsTruncated : Yes

    Video
    ID : 0
    Format : MPEG-4 Visual
    Format profile : Advanced Simple@L5
    Format settings, BVOP : 2
    Format settings, QPel : No
    Format settings, GMC : No warppoints
    Format settings, Matrix : Default (H.263)
    Muxing mode : Packed bitstream
    Codec ID : XVID
    Codec ID/Hint : XviD
    Duration : 1 min 0 s
    Bit rate : 173 kb/s
    Width : 640 pixels
    Height : 480 pixels
    Display aspect ratio : 4:3
    Frame rate : 15.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.038
    Stream size : 1.24 MiB (24%)
    Title : TalkHelper Free Skype Recorder
    Writing library : XviD 64

    Audio
    ID : 1
    Format : PCM
    Format settings, Endianness : Little
    Format settings, Sign : Signed
    Codec ID : 1
    Duration : 1 min 2 s
    Bit rate mode : Constant
    Bit rate : 512 kb/s
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  18. Thanks. I don't know what to think, though. Is MediaInfo merely guessing about the "bad" files?
    Image
    [Attachment 41591 - Click to enlarge]
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