Quantcast PAL tape conversion to NTSC - digitalFAQ Forum
  #1  
04-09-2015, 10:53 AM
Mejnour Mejnour is offline
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Hello,

Recently I got a Kramer sp11d videoprocessor.

I been working to digitalized PAL tapes for a while.

I have some demand for NTSC DVD.

I know the conversion is not a transparent proccess...so I would like to know if it's obvious to
you to know which path is the right one.

What would be the best approach? Software or Hardware.

Right now I can play the PAL tape and convert them to directly NTSC on the fly with the kramer.

Or should just use original captured PAL avi and transcode it with adobe media encoder.

If the answer is not obvious...I may have to test both approach.

Thanks
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  #2  
04-09-2015, 11:05 AM
NJRoadfan NJRoadfan is offline
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Many folks use the QTGMC AviSynth scripts to perform the conversion with very good results.

http://www.designstudioschool.com/pe...n-t144363.html

Above is an example, modify it to fit your workflow. Most NTSC players will play PAL discs without a problem, so the conversion may not be needed. All software based players handle it as well.

Of course if you have an unlimited budget, a Snell and Wilcox Alchemist standards converter will do it in real time in the best possible quality.
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  #3  
04-09-2015, 02:10 PM
Mejnour Mejnour is offline
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Quote:
Originally Posted by NJRoadfan View Post
Of course if you have an unlimited budget.
I wish

Did some quick test with adobe media encoder CS6.

My PAL video include some static overlay text and some moving text.

Once converted, static text of NTSC video look ok, moving text looks good too.

But at the end of his action (when the moving text stop), it look fuzzy (not as sharp as the static text).

Welcome to the magical world of conversion
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  #4  
04-10-2015, 11:56 AM
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lordsmurf lordsmurf is offline
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Interesting. I'll have to try this.
Code:
#PAL to NTSC
AviSource("c:\src.avi")
ConvertToYUY2(interlaced=true, matrix="PC.601")
QTGMC(SubPel=2) # SubPel must match pel in MSuper below
#super = MSuper(levels=1, pel=2) 
super = MSuper(levels=1, pel=2, hpad=16, vpad=16) 
MFlowFps(super, QTGMC_bVec1, QTGMC_fVec1, num=60000, den=1001)
Spline36Resize(720,480)
AssumeBFF()
SeparateFields()
SelectEvery(4,0,3)
weave()
Code:
#NTSC to PAL
AviSource("c:\src.avi")
ConvertToYUY2(interlaced=true, matrix="PC.601")
QTGMC(SubPel=2) # SubPel must match pel in MSuper below
#super = MSuper(levels=1, pel=2)
super = MSuper(levels=1, pel=2, hpad=16, vpad=16) 
MFlowFps(super, QTGMC_bVec1, QTGMC_fVec1, num=50, den=1)
Spline36Resize(720,576)
AssumeBFF()
SeparateFields()
SelectEvery(4,0,3)
weave()

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  #5  
04-10-2015, 12:43 PM
Mejnour Mejnour is offline
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Quote:
Originally Posted by NJRoadfan View Post
Many folks use the QTGMC AviSynth scripts to perform the conversion with very good results.
Does this work with m2v file?

Thanks
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  #6  
04-10-2015, 01:06 PM
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lordsmurf lordsmurf is offline
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I want to test it first, before recommending it. I have alternate methods that are fine as well. This may not be an improvement, and simply makes the process take longer.

Code:
ffvideosource(c:\src.m2v")

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  #7  
04-11-2015, 01:00 AM
NJRoadfan NJRoadfan is offline
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DGDecode seems to do the best job on MPEG-2 source files. I've had problems with other import methods.
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  #8  
04-20-2015, 10:18 AM
Mejnour Mejnour is offline
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Quote:
Originally Posted by NJRoadfan View Post

Of course if you have an unlimited budget, a Snell and Wilcox Alchemist standards converter will do it in real time in the best possible quality.
Hi,

Did you test it?

What about Snell and Wilcox Mach 1 "lower" budjet?
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  #9  
04-20-2015, 04:14 PM
Mejnour Mejnour is offline
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The Mach 1 seem to have NR filters but according to the diagram in the linked PDF it look like only
available for the SDI input-ouput

I may be wrong in my reading of the diagram

Anyone on this?

Mach 1 PDF
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  #10  
06-23-2015, 04:44 PM
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Goldwingfahrer Goldwingfahrer is offline
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Quote:
Kramer sp11d videoprocessor.
Zitat meynour 09.04.2015

My Kramer's designation SP-11D

Quote:
Right now I can play the PAL tape and convert them to directly NTSC on the fly with the kramer.
Good idea the signal from Kramer by SDI
[no 2x conversion analog_digital_analog]

Audio goes here by Datavideo AD100 to the Blackmagic Studio 2


Quote:
Or should just use original captured PAL avi and transcode it with adobe media encoder.
No ... AME [CS6 + CC ]as well as Sony Vegas Pro / Grass Valley Edius, Canopus Procoder produce blends.

Benefit from the SP-11D = real time
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