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Recommended Filters For Vhs
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skibby
Posted: Aug 20 2002, 10:44 AM


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what filters are recommended to convert an old vhs-video (PAL) to vcd.
The vhs-video was captured via DV camera, so the size is 720*576.
Should i resize to 352*288 before using other filters or after ?

Thanks in advance
Klaus
 
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avih
Posted: Aug 20 2002, 05:47 PM


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you could use temporal filter and 2d cleaner (optimized).

if you'll use the filters before the resize it'll take much more time. you'll have to experiment. there's no butllet-proof answer here.
 
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SillKotscha
Posted: Aug 21 2002, 09:53 AM


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QUOTE (skibby @ Aug 20 2002, 12:44 PM)
The vhs-video was captured via DV camera, so the size is 720*576.

don't understand me wrong but I think (even though vd is the best in the whole wide world) you're going a detour...

as I understood you right, your VHS-tape was recorded by your DV-camera, right?! Now you can use a IEEE 1394 port (FireWire, i.LINK) to capture your content to your pc but that means you'll recieve a mpeg2 file (not because of IEEE 1394, but because of DV). VirtualDub can't handle mpeg2 streams, that's for sure.

I think there're 3 ways for you:

1. capture your content to your pc via composite s-video or video composite but then you'll have to live with a (heavy) loss of quality but you can use VD for it (and with all filters you'll need)
2. you can use your capture programm by your DV-camera (and I guess that these programms offer you the possibilty to capture (S)VCD-compliant) and
3. capture your mpeg2 stream via IEEE 1394 (which would be the best way and you'll gain nearly no loss of quality) and encode your stream with the programm DVD2SVCD. That would be my suggestion for you because you can choose your output SVCD (mpeg2) or VCD (mpeg1)

but unfortunately I am not an expert concerning DV/ IEEE 1394 related aspects...

cheers Sill

--------------------
"Have you ever noticed that whenever Microsoft calls something 'Smart', it's definitely a feature you want to disable!"
 
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bobsobol
Posted: Sep 17 2002, 12:28 AM


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I had gathered the IEEE 1394 was your only input method for your PC and so you had put VHS images onto DV, and used the DV to get them into the PC.

Perhapse some clarification of where the DV and VHS come into the equasion is called for.

I would suggest an IQ smoother, and possibly a Temporal Cleaner on low settings, depending on the age (you mention OLD vhs, leading to my assumption older than DV) and quality of the media.

Even as VHS, you will see that the quality of a modern production VHS tape is not the same as the quality of an old 1980s one, let alone one taped of the TV then, as you then want to filter UHF noise from the antena, and possibly 88mm film noise if the program was filmed before transmittion.

As the first comment... No hard an fast solutions, but try flaXens VHS filter (very comprehensive, but somewhat complex) or Chroma Noise Reduction from Gilles Moulchard.
 
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bobsobol
Posted: Sep 17 2002, 12:31 AM


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mad.gif Doh I forgot the amazing Exorcist filter by Krzysztof Wojdon, expecially with warped tape or poor Analogue Terrestrial transmitions.
 
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Morsa
Posted: Sep 17 2002, 01:06 AM


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DV IS NOT MPEG in any flavor ,remember that.

DV is more like MJPEG.

First of all clean as many noise as you can.
Use SmoothIQ to correct color noise.
To sharpen the image try any combination between warpsharp and xsharpen and re-encode with a DV codec (mainconcept is the best one) and again to your DV camcorder.
Or if you are going to make a VCD downsize it using precise bilinear o nearest neighborhood and encode using MPEG1.
 
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