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rendering
Im getting these faint unwanted gridlines when ever i render an AVI or QT file. Its almost most like interlace lines but they are spread too far apart to be that.
anyone know how to fix this?
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4 Replies
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I don’t know if this is what’s happening to you, but I experienced something similar when there were vector stills in the project which came from a pdf file a client gave me. There was something about those files, although I don’t know what, so I replaced the stills with some that I re-saved in Photoshop, and the lines went away. If your lines are only on stills, try replacing them with different (better) ones.
Kind regards,
Eric -
It could be that there is a slight imperceptible dither in your imported file, that you don’t notice, but that your export codec trips on that…
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Is it because im at 8 bit?
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Not likely, in my opinion. 8-bit can cause banding. To picture that, imagine the difference between a smooth rainbow and one separated into 8 stripes. The 8-stripe one would suffer from an extreme case of banding.
Do you have a field-rendered source clip that has been scaled up or down? If so, you need to reinterpret the file (file>interpret footage>main) and separate the fields. DV NTSC uses lower field first, by the way.
If the source came with those lines, it may have been scaled before it got to you — in that case, you’d be, er, hosed.
Got a still?
Steve
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