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  1. Member
    Join Date
    Nov 2008
    Location
    United States
    Search Comp PM
    Whats up guys,

    I'm working on a method, using a couple pieces of software to be able to extract the TimeStamp from Mpeg2 footage, and re-display it once the file has been transferred to PC. (by converting the data to subtitles, and using subtitle program to display that data)

    I was at a dead end for the longest time, as all the software I found was for DV Avi files, but I recently had some success using a small utility I found here on the forums.

    As I understand it, the Mpeg2 stream from a Sony Hard Drive cam comes in 3 streams: Video, Audio, and Private. The Private stream includes some various metadata, including the time and date stamp info.

    This utility I found was written using PAL 25 fps, so it looks for a frame every 12 frames, instead of 15.

    So it does work, but it ends up cutting off 20% of the time stamp data.

    How does this Utility work? Does anyone have any experience in this who would be able to write a similar utility that would work with NTSC footage?

    Here's a link to the Utility:

    http://dl.free.fr/rx5Dz7U7E

    Here's the authors description:

    The mpg file generated by Sony HDcamcorders includes 3 streams

    a video stream (0x00)
    an audio stream (0x80)
    and a private stream (0xFF) which contains the info
    For each I frame, all the data is stored within a data structure
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date
    Aug 2000
    Location
    Sweden
    Search Comp PM
    Where did you find this? Maybe possible to contact the author?
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  3. Member
    Join Date
    Nov 2008
    Location
    United States
    Search Comp PM
    Yeah I found the utility after some Google searching on a thread in this forum.

    I've contacted the author a couple times, but am having limited success because of the language barrier. I also don't want to bother him too much (which I already feel like I have). I work in a software company, and if we could figure out how this type of data extraction is accomplished we'd love to be able to develop a tool in-house.

    It's like the old "feed a man fish/teach a man to fish" saying...
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