Will Someone with Premiere Pro 1.5 Help Test Something?

Discussion in 'Amateur Video Production' started by Mardon, Apr 24, 2005.

  1. Mardon

    Mardon Guest

    I'm hoping that someone with Premiere Pro 1.5 or 1.5.1 will run a little
    experiment for me to see if you can duplicate what appears to be a software
    bug that I think I may have found.

    I described the problem that I've encountered in a post to this newsgroup on
    April 22nd, entitled "Premiere Pro Adobe Encoder Crashes w/ 16:9 (1.2)
    Stills". Since then, I think that I've identified the combination of things
    that causes the problem. I'd therefore like to know if my results can be
    replicated on someone else's machine, provided the same input parameters are
    used. TIA to anyone willing to try this. If you do, please post your
    results here.

    The essence of the problem is that Premiere Pro's integrated Adobe Encoder
    causes a complete system lockup (necessitating a warm reboot) when it's used
    to export to any of the mpeg formats, a widescreen (16:9, 1.2) timeline
    containing a 740x480 pixel still image that has both a 1.2 pixel aspect
    ratio and a very high overall luminance.

    The 'test' I'm hoping someone will perform is this: Create a 720x480 image
    in Photoshop CS using the "NTSC DV Widescreen" preset, which automatically
    creates a 720x480 pixel, pure white image, whose pixels have the 1.2 aspect
    ratio. Save this image so that it can be imported into Premiere Pro 1.5 or

    Create a new project in Premiere Pro using the preset for "NTSC DV
    Widescreen 48kHz". Import the image previously created in Photoshop CS.
    Drag the image to the timeline with the default length of 5 seconds. Render
    the timeline. Go to File-->Export-->Adobe Media Encoder and export the
    timeline to MPEG2-DVD using the first preset which is "NTSC DV 16:9 Low
    Quality 3MB VBR 1 Pass". Begin the export. If you have same experience as
    me, your computer will freeze and require a warm restart. My experience has
    also been that this happens for any of the MPEG formats. I just suggested a
    specific preset for test purposes. The crash does not happen if the still
    image has a non-widescreen pixel aspect ratio (that is, 0.9) or low overall
    luminance. For 98% luminence I've found that 1 pass encoding generally
    works but the crash occurs during the second pass of 2 pass encoding. For
    luminance values 97% and below, the export proceeds OK. The picture does not
    have to be pure white to cause the crash, so long as the overall luminance
    is 98% to100%. For example, the crash does occur with a solid colour image
    of RGB 90,255,255, which has a luminance of 99%.

    Hopefully someone will try this experiment and post your results. Not that
    I'm wishing 'trouble' upon anyone, but I hope you have the same experience
    as I do. I'd hate to think that such a 'wierd' bug is specific to my
    system. BTW, my OS is Windows XP Pro sp2.
    Mardon, Apr 24, 2005
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  2. Email me said image and I'll give it a try. I don't own CS (wish I did!)
    Captain Slick, Apr 24, 2005
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  3. Mardon,

    It did not crash for me and the output looked fine on playback.
    Captain Slick, Apr 24, 2005
  4. Mardon

    Mardon Guest

    Thanks for giving it a try. I guess the trouble is specific to my systme
    then but I'm at a loss as to why. Thanks again for helping.
    Mardon, Apr 25, 2005
  5. Mardon

    Mardon Guest

    Thanks for giving it a try. I guess the trouble is specific to my systme
    then but I'm at a loss as to why. Thanks again for helping.
    Mardon, Apr 25, 2005
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