I'm trying to apply a deinterlace filter to my video in Virtual Dub, but it doesn't work.
Video - Full processing mode
Video - Filters
(Add -> deinterlace -> Blend fields together (best))
Save AVI
Avi output = interlaced.
What's wrong?
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What's your source? My guess is it's a video was originally interlaced but was resized improperly before you got it. It may look interlaced but the two fields are not intact (ie, one picture in one field and the other picture in the other field) and attempting to deinterlace is just blurring the frame without blending the two fields together.
Try discard field 1 instead of blend (the output frame will be half high). Do you see any comb-like artifacts in the output window? If so, you have the above mentioned problem. -
Originally Posted by jagabo
Can I add deinterlace filter for second pass, or do I have to enable it during the first pass? -
Originally Posted by Xavier
Originally Posted by Xavier
Originally Posted by Xavier -
Why are you deinterlacing, anyway?
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Originally Posted by lordsmurf
Btw, I think it IS interlaced. A guy told me it was partially, so if anyone can still help me, please. Do you have to do anything else than put on filter? Doesn't blend work 100%? -
Originally Posted by Xavier
Originally Posted by Xavier
Maybe if you were to post a few seconds of the source video we could give you some more help. Currently we don't have enough information to offer anything but wild guesses."Shut up Wesley!" -- Captain Jean-Luc Picard
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Final result is supposed to be watched on my computer screen. If I'm converting to xvid, I doubt the final destination is DVD...
I updated VirtualDub, and now MediaInfo shows it as progressive. Not sure if anything but the flag is different though.
And is it even possible for it to be "partially", or has he just read the flag? -
Yes , as explained above, mediainfo just reads the header information. It can be wrong.
The actual content can be progressive, interlaced, or hybrid, or some weird combination. If you are still seeing artifacts in the output, it was either wrong, or your process was not ideal.
To be fair, you never mentioned "xvid", only "avi". It's not uncommon to use lossless avi intermediates (e.g. lagarith, huffyuv), even if the final goal is DVD. -
Well, I thought I mentioned xvid :P Sorry about that
Anyways, is there a chance my last output wasn't progressive? I did it exactly the same way, only now with a newer version of VirtualDub. For some reason it would display as "interlaced" in MediaInfo earlier, while it displays as "progressive" now. No differences at all in procedure, only newer VirtualDub.
Is the last output fine? I know that my previous output was "less" interlaced than the input, but I'm not sure how you can see if it's a hybrid or something like that.
I have another question once you bring it up, encoding between lossless formats, say 5 times, will it not lose ANY quality at all? Or will it only lose less than lossy formats? -
The best way is to use your eyes. The output can still be progressive, but if you used a poor quality method you can have artifacts left over from the deinterlacing - in this case I wouldn't call the output "fine", but it can be a matter of personal opinion.
Yes, lossless means lossless; i.e. there is no quality loss between generations if you maintain the lossless format. -
Originally Posted by Xavier
Originally Posted by Xavier
Originally Posted by Xavier
Originally Posted by Xavier
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