Help on DV to DVD guide

[matzed]

Hi,

I want to try this guide to test my new DVD recorder, to watch on TV a DV movie converted on a DVD.

The Avisynth script is telling me that convultion3D only supports YV12 color format. I'm using Panasonic DV codec, that's why i'm getting this error i think.

I have several questions :

1- Is DV natively YUV color format ?

2- If yes is the answer of question 1, using a RGB codec like the Panasonic will reduce the quality, specifically when doing conversion to MPEG2 ?

3- If DV is natively YUV, will i lose quality if i use Panasoic Codec and doing a conversion to YUV in the avisynth script ?

4- If DV is natively YUV, will i get a better quality using Canopus DV Codec instead of Panasonuc for this conversion ?

Thanks for your answer,

Matz

EDIT : i get the evaluation version of canopus DV codec. I changed the fourcc, and i'm sure that the canopus driver is used when reading because of the "C A N O P U S" letters on the video. But i still get the error from avisynth script that the vid is not YV12. How to change that in the canopus DV codec ?

[Dali Lama]

Hi,

The Panasonic DV Codec is RGB. Anyways, you have to convert it to YV12 in avisynth by inserting:

ConvertToYV12()
Convolution3D()

Oh and DV is natively YUV (YUY2)

Quality is subjective, but converting YUY2->RGB->YV12 should be worse than YUY2->YV12. Try the canopus codec if you like.

Good Luck,

Dali

[matzed]

Originally posted by Dali Lama
Hi,

The Panasonic DV Codec is RGB. Anyways, you have to convert it to YV12 in avisynth by inserting:

ConvertToYV12()
Convolution3D()

Oh and DV is natively YUV (YUY2)

Quality is subjective, but converting YUY2->RGB->YV12 should be worse than YUY2->YV12. Try the canopus codec if you like.

Good Luck,

Dali

I thought that YV12 and YUV was the same... ooops... So if i use the canopus, i'll have to convert it also tu YV12 ?

Do you have any good link explaining those RGB, YUV, YV12 etc things ? I know, i can google to have that, but maybe there is a well known good link about that.

Thaanks

Matz

[bb]

matzed,
you're currently using the (crappy because not finished) YV12 version of Convolution3D. Do not use this version for DV conversion. Use the YUV2 version instead:
http://www.avisynth.org/~warpenterprises/files/convolution3d_25_dll_20030422.zip

And do not convert to YV12 either. If you use the Panasonic codec, use a ConvertToYUY2() command instead (note: ConvertToYUY2(), not ConvertToYUV2()). You don't need this with e.g. Canopus or MainConcept.

bb

[matzed]

Thanks bb, that worked.

But i think i made a mistake : i put the command
ConvertToYUY2(interlaced=true)
in the script you mentionned in your DV to DVD guide, just after the AVISource.

But when i play it on a standalone, it seems jerky. Like if the interlaced fields are not in the correct order. Maybe i sould use that instead :
ConvertToYUY2(interlaced=false)

?

Thanks for your help

Matz

PS : The entire script :

LoadPlugin("c:\Convolution3D-YUV2\Convolution3D.dll")
AVISource("F:\movie.avi")
ConvertToYUY2(interlaced=true)
SeparateFields()
odd=SelectOdd.Convolution3D(1, 6, 10, 6, 8, 2.8, 0)
evn=SelectEven.Convolution3D(1, 6, 10, 6, 8, 2.8, 0)
Interleave(evn,odd)
Weave()
DoubleWeave.SelectOdd()

[bb]

Originally posted by matzed
But when i play it on a standalone, it seems jerky. Like if the interlaced fields are not in the correct order. Maybe i sould use that instead :
ConvertToYUY2(interlaced=false)

No, this should not be changed. What happens if you drop the "DoubleWeave.SelectOdd()" line? (I'm investigating if this is an error in the DV to DVD guide, but I have to record some interlaced samples again to verify.)

bb

[matzed]

bb,

This is working if i drop the line "DoubleWeave.SelectOdd()".

Do you know why ? Maybe it's beacause of my source ? It's a Sony PAL Camcorder (TRV330) with no special settings or changes. I made the capture using Premiere 6 with a Pinnacle StudioDV firewire card. Nothing special, as you can see...

I could only test on one DVD standalone, a Pioneer one. I don't think it differes from any other DVD player.

In fact, i don't understand very well your script, and i don't understand why you put all these commands on the fields.

Matzed

[bb]

Originally posted by matzed
This is working if i drop the line "DoubleWeave.SelectOdd()".

Do you know why ? Maybe it's beacause of my source ? It's a Sony PAL Camcorder (TRV330) with no special settings or changes. I made the capture using Premiere 6 with a Pinnacle StudioDV firewire card. Nothing special, as you can see...
I guess this is indeed an error in the guide. I hope I soon get the time to investigate on this.
In fact, i don't understand very well your script, and i don't understand why you put all these commands on the fields.

This is necessary to maintain the interlaced structure. You'll find multiple threads on this topic.

bb

[matzed]

Thanks, I'll use your script without the last line, and i'll find some info on the way to deal with the interlaced sources :)

Matz

[matzed]

The script is working without DoubleWeave.SelectOdd()...

There was an insteresting discussion about that in the thread "Comments on the DV to DVD guide", but this thread is closed. Why ? I'd like to have the solution for the best way to deal with the fields of interlaced source...

Matz

[cweb]

Wouldn't something like this give better results, plus allow to have resizing plus black borders? I built this up from posts about interlaced resizing.

# alter width and height to your DVD needs
width=688
height=512 # 512 PAL 416 NTSC
video=video.separatefields().bicubicresize(width,height/2)
# do filtering here
video=TemporalSoften(video,1,5,8,3,2)
video=Deen(video,"c3d")

video=Undot(video).AddBorders(16,16,16,16) # add any borders you like
video=weave(video)