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| the_wildcard |
| Posted: Jul 31 2004, 07:16 PM |
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Okay, I've posted some screenshots of my comparison. I have alot more but these screenshots are from a motion scene from an MTV "real world" episode. I capured these scenes off a television using my DV camcorder.
I encoded the video with 3 passes-Divx 5.1, 2100 bit rate, and also am using a Dot crawl filter.
Original with NO filters
Using Smart deinterlace filter with default settings
Using Built in deinterlace filter with default (Blend) settings and the sharp filter set at 11
Using deinterlace MAP filter with default settings
Using deinterlace AREA filter with default (Blend) settings
The problem is that the built in deinterlace filter blurrs the image way to much.
From these screenshots, it seems that the Deinterlace Area and MAP don't perform as well, SO I know it must be my settings.
Anybody have any SETTING reccomendation? I tried using the sharp filter set at 50 in addition to the built in deinterlace filter, but that added some noise.
My main goal is to remove the interlacing and also NOT blurr as much |
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| i4004 |
| Posted: Aug 1 2004, 01:12 AM |
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you are a tiny bit confused here
it is usual thing to see motion blurred by deinterlacer, as that cannot be done without some blur, because you're essentially discarding one half of the image, and then recreating another half....
and your complate frame is moving;ergo complete frame is blurred....i agree it looks poor, but i hope camera is not moving all the time in that show(?)
nice sharpening filter is 'unsharp mask'(graft again).....
also, if you're capping tv, i believe divx5 codec is a wrong choice.....it will introduce some blur of it's own....(ie if you're trying out deinterlacers, you should do that..and not deinterlacers+divx5....as that will definitely look even blurier)
finding a better codec for noisy source was explained here
http://forum.doom9.org/showthread.php?threadid=71485
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| the_wildcard |
| Posted: Aug 1 2004, 04:02 AM |
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Well I did try using xvid on another video and although it was sharper, i noticed there were still blocks visible. I used the following settings:
Full processing mode
2 passes
H.263
Global motion, interlaced encoding, q-pixel
motion precision search - 6 ultra high
trellis quanitizaion
1359 kbps encoding (it's around 8 minute clip, 128 audio, want file size around 85-90 megs)
All other settings, including iframes, overflow, curve compression and quantizer restrictions are same as those featured in doom 9.org's guide
You recommend any changes to these settings? I am going to go ahead and try to encode with those settings for this video. |
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| fccHandler |
| Posted: Aug 1 2004, 04:13 AM |
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Have you tried KernelDeint? It's not 100% free of artifacts (as I said to you in PM), but it IS very sharp.
I rarely deinterlace anymore, since my target is always MPEG-2 now. But back in the "old days" I discovered what I thought was a neat trick. Capture at 640 x 480, then rescale to 448 x 336 using VirtualDub's Precise Bicubic (A = -1.00) filter, or AviSynth's LanczosResize(). All by itself, the 0.7 vertical reduction hides the interlacing very nicely! This used to be my favorite method for making progressive DivX videos from interlaced TV.
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May the FOURCC be with you... |
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| the_wildcard |
| Posted: Aug 1 2004, 05:37 AM |
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Hmm I would like to try kerneldeint, but it seems like it;'s only for avisynth and not for virtualdub. I am currently only using virtualdub. Thanks for the response though! |
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| fccHandler |
| Posted: Aug 1 2004, 05:56 AM |
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Ah, you haven't discovered Avisynth yet...
IMHO Avisynth is an absolutely essential piece of software, though it takes some patience to learn how to use it. But believe me, the effort is worth it, and soon you won't be able to live without it.
Avisynth + VirtualDub is an unbeatable combination!
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May the FOURCC be with you... |
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| stephanV |
| Posted: Aug 1 2004, 10:23 AM |
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Spam killer ;)
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| QUOTE (the_wildcard @ Aug 1 2004, 06:02 AM) | Full processing mode
2 passes
H.263
Global motion, interlaced encoding, q-pixel
motion precision search - 6 ultra high
trellis quanitizaion
1359 kbps encoding (it's around 8 minute clip, 128 audio, want file size around 85-90 megs)
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If youre deinterlacing, dont use interlaced encoding but progressive. Interlaced encoding is for if you want to keep the content interlaced. It in general costs more bits, so you could expect a small quality gain by setting it to progressive.
Although, from that thread/review Ivo pointed to, i would suggest using Nandub or ffvfw (if you want it to be really MPEG4) for encoding instead oif XviD/DivX.
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useful links:
VirtualDub, Input plugins and filters, AviSynth, AVI-Mux GUI, AC3ACM by fcchandler, VirtualDub FAQ |
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| i4004 |
| Posted: Aug 1 2004, 11:40 AM |
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avisynth sometimes gets me really sentimental; look what i'vew wrote in updated version of scratch/vhs-drop-outs removal guide
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"This guide explains an attempts to make such flaws less irritating via the usage of Avisynth (the most powerfull freeware video post-processing software) and its plugins ('modules' added to Avisynth for particular video image correction purpose)." |
really make me cry tears of joy....
if i ever buy that nice bike, i would make some stickers with avisynth on 'em...
would be fastest avisynth around! 
the trick with resizing is not that bad at all(although i was a bit sceptical when fcc first said it)
it looks fairly simillar to blend-deinterlacing, and blending has it's advances (motion smoothnes ie less of 25/30hz flicker..) and resizing is fast....
there should not be larger differences between KD and smart deinterlace (still portions of the frame retain full vertical resolution on both filters) but obviously, KD is faster.....
btw. MAP is not a good deinterlacer.....
but wait;don't tell me this broad deserves to be deinterlaced THAT well?
for analog video, xvid is same crapshot as divx5...
if you want it to be same as on telly, then encode as interlaced mpeg2, make dvd.....same as fcc (aka "the bitrate waster") is doing....
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| the_wildcard |
| Posted: Aug 1 2004, 07:39 PM |
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| QUOTE | | I rarely deinterlace anymore, since my target is always MPEG-2 now. But back in the "old days" I discovered what I thought was a neat trick. Capture at 640 x 480, then rescale to 448 x 336 using VirtualDub's Precise Bicubic (A = -1.00) filter, or AviSynth's LanczosResize(). All by itself, the 0.7 vertical reduction hides the interlacing very nicely! This used to be my favorite method for making progressive DivX videos from interlaced TV. |
Hmm can I apply this trick to my current situation. The problem is, right now, my captured video is at 720 x 480.
Plus, alot of the posts have recommended encoding to mpeg-2 for DVD's to watch on television. I, however, just want to watch on my computer. Plus, won't the file size be much larger?
i4004, yes, you are right, she is not worth all this headache. |
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| stephanV |
| Posted: Aug 1 2004, 07:46 PM |
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Spam killer ;)
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| QUOTE (the_wildcard @ Aug 1 2004, 09:39 PM) | I, however, just want to watch on my computer, so I think I have to stay with Xvid/Divx.
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nono
NanDub (divx 3.11) or ffvfw play just as fine on you comp.
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useful links:
VirtualDub, Input plugins and filters, AviSynth, AVI-Mux GUI, AC3ACM by fcchandler, VirtualDub FAQ |
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| the_wildcard |
| Posted: Aug 1 2004, 07:53 PM |
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| QUOTE (stephanV @ Aug 1 2004, 01:46 PM) | | QUOTE (the_wildcard @ Aug 1 2004, 09:39 PM) | I, however, just want to watch on my computer, so I think I have to stay with Xvid/Divx.
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nono
NanDub (divx 3.11) or ffvfw play just as fine on you comp. |
Okay I'll give nandub a try. Now how would I deinterlace and apply other denoise filters? I figure I could add on the audio later with virtualdub.
Any reccommendation on settings or tips? I'll do the usual forum/google search and give it a try. |
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| fccHandler |
| Posted: Aug 1 2004, 10:28 PM |
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Administrator n00b
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| QUOTE (the_wildcard @ Aug 1 2004, 03:39 PM) | | Hmm can I apply this trick to my current situation. The problem is, right now, my captured video is at 720 x 480. |
That's no problem. The trick lies solely in the resizing of the original height from 480 to 336 (a factor of 0.7) using the specific filter I mentioned. The original width doesn't matter, as long as you resize it to 448 (to keep the proper 4 x 3 aspect ratio).
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May the FOURCC be with you... |
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| the_wildcard |
| Posted: Aug 2 2004, 09:25 PM |
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| QUOTE (fccHandler @ Aug 1 2004, 04:28 PM) | | QUOTE (the_wildcard @ Aug 1 2004, 03:39 PM) | | Hmm can I apply this trick to my current situation. The problem is, right now, my captured video is at 720 x 480. |
That's no problem. The trick lies solely in the resizing of the original height from 480 to 336 (a factor of 0.7) using the specific filter I mentioned. The original width doesn't matter, as long as you resize it to 448 (to keep the proper 4 x 3 aspect ratio). |
Your trick worked perfectly FCC!! Thanks!! |
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| the_wildcard |
| Posted: Aug 3 2004, 09:17 PM |
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Unregistered
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One last question, anybody see any problem with this filter chain order?
resize
dot crawl filter
hsv filter (for saturation)
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| i4004 |
| Posted: Aug 3 2004, 11:46 PM |
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i believe dot crawl elimination would be easier to do(would yield better results) on full resolution image, rather than on downsized....
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