time codes on mpeg videos

Discussion in 'Amateur Video Production' started by btrposter, Sep 4, 2003.

  1. btrposter

    btrposter Guest

    I'd like to put timecodes onto an mpeg video. I don't mean having some
    data in their that a video player will decipher and display. What I
    mean is to put the time codes directly onto the image. I'm hoping it
    would look like SMPTE timecodes, but anything will do. I just need to
    be able to see the time and frame# so I can time certain other things
    for a project I'm doing. The timecoded video won't be part of the
    final product, it's just needed so I can have a standard set of time
    numbers across all the people who are involved rather than relying on
    the inconsistent clock thingy that's in WMP and other programs.

    Is there something around that will do what I want to do? Has someone
    made some kind of add-on for VirtualDub that will do it?

    Any help will be appreciated.
     
    btrposter, Sep 4, 2003
    #1
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  2. btrposter

    Samuel Paik Guest

    Basically, you want to put a string based on frame number on a video.
    It should be straightforward to do that in AVISynth. You'll probably
    have to do a bit of calculations to take into account drop frame if
    you want drop frame.

    <http://www.avisynth.org/>

    But why MPEG?

    VirtualDub has frame numbers as well as absolute time in its status bar.
    It should be trivial to extend it to show a time code string (drop frame
    or non drop frame).

    Sam
     
    Samuel Paik, Sep 5, 2003
    #2
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  3. btrposter

    georgess Guest

    Not sure what editor to do it with, but there is a "sub tit;le field"
    You might be able to put it in there
     
    georgess, Sep 5, 2003
    #3
  4. btrposter

    Samuel Paik Guest

    If you are using 4:2:2 I-frame only MPEG-2, then fine (except your
    software selection is likely to be a bit limited). If it is not 4:4:4
    or 4:2:2, then you are giving up half the vertical color resolution.
    If it is not I-frame only, then cuts require the software to reencode
    or you can only cut on GOP boundaries. Also, Main Profile @ Main Level
    is rather low bitrate for video editing. And lets not even talk
    about audio...

    Sam
     
    Samuel Paik, Sep 6, 2003
    #4
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