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Thread: Strange issue with output file

  1. #1
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    Strange issue with output file

    Hi people

    Not sure if anyone else has had this issue but with the MPEG2 that TC Studio outputs - we put this into Adobe Premiere cs3 and it seems to add red frames every so often which is not on the original file.

    If we convert the mpeg2 to Tricaster AVI within TC studio it comes in fine?!?

    Also we have not found the i-link quality very good with powerpoint - any one else had this problem?

    Lastly - if I put the MPEG2 straight into a DVD authoring application - will this burn a DVD without having to transcode etc

    Thanks in advance !

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  3. #3
    Quote Originally Posted by nwmsltd View Post
    Hi people

    Not sure if anyone else has had this issue but with the MPEG2 that TC Studio outputs - we put this into Adobe Premiere cs3 and it seems to add red frames every so often which is not on the original file.

    If we convert the mpeg2 to Tricaster AVI within TC studio it comes in fine?!?

    Also we have not found the i-link quality very good with powerpoint - any one else had this problem?

    Lastly - if I put the MPEG2 straight into a DVD authoring application - will this burn a DVD without having to transcode etc

    Thanks in advance !
    I sent my file into NewTek so they could look at it, no word though on the outcome of the red frame occurance with adobe see Sbowie's posts.

    Don't forget that you are scaling the video down to 72 DPI (resolution loss occurs here)

    Though I haven't tried burning straight to DVD, it should work!

    not sure if that helps

    Tony

  4. #4
    'the write stuff' SBowie's Avatar
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    Quote Originally Posted by tonyrizo2003 View Post
    Don't forget that you are scaling the video down to 72 DPI (resolution loss occurs here)
    Not to derail this thread, but just to point it out - yes, downscaling is occuring ... however it is very, very likely not being downscaled to 72 dpi. The sometimes heard axiom, if I can call it that, that 'video is 72 dpi' is bunk.

    DPI has next to nothing to do with video, and the whole "72 dpi" notion in the context of monitors and video is 99.9% bogus (I leave a small percentage because once upon a time long ago, there was a certain notional validity in a specific context).

    Much has been written about this, and you can still find a fair bit of complete nonsense on the web written by people who you'd expect to know better - but here are a few pages on the topic I found to save me re-typing much of the same material myself:

    http://www.scantips.com/no72dpi.html
    http://www.nicholsonprints.com/Articles/dpi.htm
    http://www.rideau-info.com/photos/mythdpi.html
    http://www.ekdahl.org/test_dpi/test2dpi.htm
    http://www.monarda.se/extra/ppi-test...st_english.htm

    I suppose it will take several generations for this myth to completely die off. One encouraging note is that the makers of digital still cameras (Canon, et al) quite rightly completely ignore dpi and simply refer to the image's actual resolution (which is far more important for video purposes, and less confusing with that).

    (Some will make the case that dpi is still somewhat useful in a video context as a benchmark when scanning photos for video display, but this is only a generality that can be ignored at will. You can arguably completely drop the dpi factor (which in this context is nothing more than a divisor in the scanning software) from consideration and simply scan with a specific pixel resolution target and actually get a better 'fit'.
    --
    Regards, Steve
    Forum Moderator
    ("You've got to ask yourself one question ... 'Do I feel lucky?' Well, do ya, spammer?")

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