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  1. I have been trying to capture interlaced 480*576 resolution in VD and the picture seems to have the video fluttering on the capture video.

    I never had this problem before, so do not know why I am experiencing it now.

    I am using the PicVideo MJPEG Codec (with the field option selected for resolutions over 288 lines)
    I am cropping the video during capture.
    I have noise reduction on during capture.

    I seem to have narrowed it down to being an issue with cropping. If i have cropping off it captures fine, if I have cropping enabled the picture flutters on the captres file.

    Here is what one of the captures looks like:



    If anyone can help me out on how to stop the fluttering captures their help would be greatly appreciated.

    Tnx, pixel.
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  2. Member
    Join Date
    Apr 2002
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    The State of Frustration
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    What about deinterlacing?
    Hello.
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  3. I have tried de-interlacing and it gets rid of it, but I don't know why this occurs only when putting the cropping option on (and it didn't even crop it).

    I would rather keep it interlaced because the final output is a DVD.

    I can capture fine without the cropping option on, but this means it pushes up the time in TMPGEnc because I have to crop in that.

    I'll try VD out a bit more and see if it happens with HUFFYUV or other codecs.

    Thanks anyway
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  4. Member
    Join Date
    May 2003
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    Pal Realm
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    I think I've read on here that cropping can change the interlacing line numbers/order. So, if the video is upper or lower field first, and you've cropped the wrong number of "lines", they are no longer in the same order.

    In other words, line 1 is no longer line 1 causing the fields to be reversed.

    It made sense to me anyway. :c) I think there is some ideal amount of lines to use, but I can not find where I read it. I abandoned cropping and instead, I clip video by overlaying black where I want and then resize if I need to.

    You could test if that's the case with your video, perhaps, by doing a field swap with virtualdub.

    Hope that helps, and my memory is correct.
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  5. Originally Posted by Gees
    I think I've read on here that cropping can change the interlacing line numbers/order. So, if the video is upper or lower field first, and you've cropped the wrong number of "lines", they are no longer in the same order.

    In other words, line 1 is no longer line 1 causing the fields to be reversed.

    It made sense to me anyway. :c) I think there is some ideal amount of lines to use, but I can not find where I read it. I abandoned cropping and instead, I clip video by overlaying black where I want and then resize if I need to.

    You could test if that's the case with your video, perhaps, by doing a field swap with virtualdub.

    Hope that helps, and my memory is correct.
    Thanks Gees. It makes sense to me too. I was just working with AVI's for a change to try and get a better output, but I can't record more than one project at a time on my capture drive due to the file size, and it just takes too long to re-encode.

    I'm going back to using Lordsmurf's guide, even though I know the idea of transcoding MPEGs is not the best option, I still like it and it is faster to encode than AVI.

    Thanks to both of you for your input.
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