Pinnacle 10 & creating a movie from jpegs

Discussion in 'Video Cameras' started by Peter, Aug 23, 2007.

  1. Peter

    Peter Guest

    I have this working OK but I am getting weird results on the overall
    timing; the length of the movie.

    The movie I am making is a VCD quality one, 25fps.

    So, I should have one frame every 40ms.

    I have 1400 jpeg images (taken from an interval shooting camera,
    640x480).

    1400 x 0.04 = 56 seconds. THAT is how long the movie should be!

    Pinnacle enables you to specify how long each still image is animated
    for, and you HAVE to enter a value in there. This feature is obviously
    intended for inserting stills into a movie; then you may want to have
    the duration set to say a few seconds (the default is 4 secs). But in
    this case I want each still image to be animated for just one frame
    period, obviously.

    The shortest duration that can be set is 0.01 sec, then up in 0.01 sec
    increments.

    With the duration set to 0.01s I get a movie 2:01 long (121 secs) i.e.
    just over 2x longer than it should be....

    With the duration set to 0.02s I get a movie 2:52 long...

    None of this makes sense. You can't make a 25fps movie with a frame
    duration of 10ms. Well, actually you could, packing 4 of my jpegs into
    each 40ms frame, but the movie would be just 14 seconds long.

    The correct movie length should obviously be 1400* 25 fps = 56 secs.

    One possibility I thought of is that Pinnacle ignores the "duration"
    value if it is shorter to a frame size i.e. anything under 40ms would
    be treated as 40ms, but clearly this is not happening since 10ms and
    20ms durations give me different movie lengths.

    Another possibility is that Pinnacle is actually interlacing and
    generating 50fps i.e. 10ms per frame but that isn't happening either
    because that would yield a much shorter movie than I am getting.

    I have read the Help over and over and basically it doesn't tell you
    anything that isn't obvious. There is no detail explanation of how the
    timing works, in the mode in which I am using the program.

    The finished movie *is* watchable and I can't see anything wrong with
    it - except it is much longer than a straight # of images * fps
    calculation.

    The other thing is that the timeline shows a timing which bears no
    relation to the resulting mpeg movie. With a duration of 10ms I see 56
    secs which is exactly correct assuming the real frame duration is
    40ms! With a duration of 20ms I see 1:52 which is exactly twice that.

    Can anyone please explain this?
     
    Peter, Aug 23, 2007
    #1
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  2. Peter

    Peter Guest

    (crossposted more widely)
     
    Peter, Aug 24, 2007
    #2
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  3. Peter

    :Jerry: Guest

    <snip>

    And answers already given / suggested in another thread, but Peter
    doesn't seem interested in answers, rather just slagging off some
    software that was never designed to do what he wants to do.
     
    :Jerry:, Aug 24, 2007
    #3
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