DV (720X480 AVI) to SVCD (480X480 MPG) DE-INTERLACE???

[jpb1977]

I've got several hours of video that is about to get converted - Imported the DV material with Premiere, and now will begin the export from Premiere using Ligos' Premiere plugin ver 2.0 - the question is - DE-INTERLACE or not? Also, things like Better Resize, Lower Fields First are crucial correct? What about Noise Reduction BLUR - is it too heavy, or is it beneficial?? Thanks!

jpb

[jpb1977]

BUMP!!!

[fingernailX]

Yes on the better resize and lower field first. You'll get strong opinion both ways on deinterlacing on this forum (and most any other topic as well) I'm surprised you haven't been flamed because you're using Ligos - which I like BTW. Anyway here's my 2 cents: If you ever intend to play the SVCD back on a PC to a computer monitor or a projector then you will have to deinterlace or the scan lines will be terrible, even if the player you use 'deinterlaces' on the fly. If you are only going to display on a television then you don't have to as broadcast signals are interlaced and they certainly look okay. I always deinterlace because I playback my svcds on a progressive scan, component out dvd player and it just looks better when I do. The quality of the source will have a greater impact on how the finished product looks than any other variable - interlace, bicubic resize, filters etc......

[jpb1977]

Thank you very much - all I can say is Ligos 2.0 is a huge step up from their previous plugin. Options are compact and tidy - but the functionality has increased about 200%!

What about noise reduction? As an AV Engineer (mpeg all day!) I've had to encode some 3d renders recently, and the noise reduction was the key to getting good results, but this was fast motion 3d - will it help my DV video the same way? One more thing - if you have 2.0, you'll notice an option for "assume luminance blah blah" - use it or not? THANKS!

jpb

[snowmoon]

LSX has good results with interlacing. I would use it. Noise reduction too, but don't go overboard as some noise is not that bad for the processing.

The 2 things that eat bits in a mpeg stream faster than anything else are.

1) Contrast/Edges. Sharp edges are killer, one of the prime examples of this is flowing water, lots of little bright spots all over the place, always changing shape.

2) Noise. The speckle kind is the worst. A small ammount of noise that is the same color is fine as the encoder often filters that through the DCT process. White speckels are the worst, with colored ( those annoying red/blue ones ) come up a close second.

Persoanlly I filter with vdub and save to huffyuv encoded .avi file. It's probably a tad slower the frameserving, but I don't mind. If you want to know my NR template I'll post it here.

[jpb1977]

bump???

[EricB]

No flames, just another opinion.

I only deinterlace when it is absolutely necessary. You are compromising or losing information. For showing on TV, it's a given that you use interlacing. If you see problems, then there is something wrong with the settings like field order.

On the computer, I use EXACTLY the same files, and just play them with a software DVD player like PowerDVD. It works great, no deinterlacing, and I can use the same files. It also can be used on any computer whether it has a DVD drive or not.

I tried Ligos recently and the quality was fine. However, I did a comparison of frameserving to TMPGENc from Premiere, and it was faster! So with no axe to grind, I would still continue to use TMPGENc.

[jpb1977]

Wow, everyone treads lightly around talk of Ligos?! Well first off, guys, just in case that is holding you back from replying, fear not - there will be no flame wars here! Ok, thanks for the tidbits on why I should not deinterlace, and thanks for the heads up on using a player to remove the artifact.

Anyone have an opinion on the "assume luminance" option that is new in Ligos plugin 2.0? Thanks!

jpb

[EricB]

Well there are a lot of high level debates about quality and sometimes the opinions are overzealous.

My simple method is to show the video to my wife and if she doesn't like it, its bad.

[jpb1977]

Ok, ran some testing this weekend. Finally, my mpeg conversions play smoothly, no more film effect (slowing down the frame rate). I created several SVCD files, 480x480, burned them and played them. The combing effect that I see on my monitor is no longer present (of course) and the motion looks wonderful. I will definitely NOT be deinterlacing the video.

jpb