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-   -   PAL tape conversion to NTSC (https://www.digitalfaq.com/forum/video-workflows/6487-pal-tape-conversion.html)

Mejnour 04-09-2015 10:53 AM

PAL tape conversion to NTSC
 
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

NJRoadfan 04-09-2015 11:05 AM

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.

Mejnour 04-09-2015 02:10 PM

Quote:

Originally Posted by NJRoadfan (Post 37588)
Of course if you have an unlimited budget.

I wish :D

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 :D

lordsmurf 04-10-2015 11:56 AM

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()


Mejnour 04-10-2015 12:43 PM

Quote:

Originally Posted by NJRoadfan (Post 37588)
Many folks use the QTGMC AviSynth scripts to perform the conversion with very good results.

Does this work with m2v file?

Thanks

lordsmurf 04-10-2015 01:06 PM

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")

NJRoadfan 04-11-2015 01:00 AM

DGDecode seems to do the best job on MPEG-2 source files. I've had problems with other import methods.

Mejnour 04-20-2015 10:18 AM

Quote:

Originally Posted by NJRoadfan (Post 37588)

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?:question:

What about Snell and Wilcox Mach 1 "lower" budjet?:hmm:

Mejnour 04-20-2015 04:14 PM

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:question:

I may be wrong in my reading of the diagram:screwy:

Anyone on this?

Mach 1 PDF

Goldwingfahrer 06-23-2015 04:44 PM

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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