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| curmudgeon |
| Posted: Dec 25 2002, 02:55 AM |
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Unregistered
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I recently recorded something at 640 X 480 for the first time (after always
using 320 X 240 before). After running it through various deinterlacing
filters, I have decided I don't like the result, and simply want to convert
the original YUY2 to 320 X 240 (assuming it gets rid of the interlacing). I
can think of a couple of ways to do this, but would just like someone to
tell me the BEST (in terms of preserving the quality) way. Thanks.
An unrelated question - with Windows Media Player (which I usually avoid),
I can't get any video now - just audio and a box with the cryptic message
"The operation can not be performed because the pins are not connected."
Does this mean anything to anybody? Thanks again. |
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| fccHandler |
| Posted: Dec 25 2002, 03:13 AM |
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Administrator n00b
Group: Moderators
Posts: 3961
Member No.: 280
Joined: 13-September 02
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Simply rescaling to 320 x 240 with Precise Bicubic (A=-1.00) will get rid of the combing, but may introduce ghosting. If it bothers you, add Smart Deinterlacer set to interpolate (not blend) before rescaling.
Sounds like you might need to reinstall WMP.
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May the FOURCC be with you... |
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| dnelson |
| Posted: Dec 29 2002, 04:58 AM |
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If you're recording broadcast TV, have you tried just setting the IVTC radio button in VirtualDub's Frame Rate menu? Set it to Reconstruct from fields - adaptive, and it'll automatically adjust the output frame rate to 24, too.
Assuming you have enough disk space, recording at 480 lines, then enabling IVTC and resizing (w/ Precise Bicubic) to 240 gives a much better quality picture. If you record at 29.97 fps and 240 lines, you're really only capturing half the frames, and lines close to horizontal will have ugly stairsteps.
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| curmudgeon |
| Posted: Jan 18 2003, 11:15 PM |
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Sorry I took so long to get back to that video.
> Simply rescaling to 320 x 240 with Precise Bicubic (A=-1.00) will get rid
> of the combing, but may introduce ghosting.
It didn't get rid of the combing at all.
I kept researching, and finally stumbled across Donald Graft's telecide
filter. That cleared up almost everything  (I had never encountered
telecined video before in the weekly programs and sporting events I have
captured so far).
> If you're recording broadcast TV, have you tried just setting the IVTC
> radio button in VirtualDub's Frame Rate menu? Set it to Reconstruct from
> fields - adaptive, and it'll automatically adjust the output frame rate to
> 24, too.
Should that work as well on video I have already captured (it worked
somewhat, but not too well when I tried it)?
Let me ask a couple of (probably dumb) questions here:
1. What happens if you capture using this filter on non-telecined video? I
would guess nothing good.
2. Does any way exist to predict in advance which shows will have
telecining applied before broadcasting? I would guess theatrical movies
as a start, but don't know beyond that.
I suppose now I want to decimate the duplicate frames out. I have
downloaded that filter also, and followed the relatively easy directions,
but I always get a file of length zero when I try it.
Any ideas why I can't get it to work?
The video does seem a little unusual. Instead of a duplicate every
fifth frame, the following frames (in a sample of 100 frames) look like
duplicates (of the previous frame) in the telecided video:
3 5 6 8 10 12 19 24 31 38 43 45 50 55 56 58 60 61 63 65 66 68 69 71
72 74 76 77 79 81 82 84 86 87 88 90 92 93 95 97 99
Maybe I should just stay with 30 fps for this video.
Thank you again. |
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| dphirschler |
| Posted: Jan 22 2003, 10:15 PM |
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If it is live (sporting events, evening news), then it will be video.
NFL Films specials are film.
Sitcoms and soap operas are usually video.
Live concert broadcasts could be either film or video.
Animation is film (not sure about the CG shows on Cartoon Network. They could be rendered as video).
Movies are film.
This is only a guide. There will always be exceptions. Someday you may even encounter a hybrid.
Remember: video is interlaced, film is telecined. Film has to be developed, so it does not lend itself well to live broadcasts.
Darryl |
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