Interlace vs. Non-Interlace Question

[metranil]

Hello,

I found an excellent guide at digvid.info on how to tweak the settings on TMPGEnc. I think it answered 90% of my questions about the settings.
However, I would appreciate a final clear-up on the whole "interlace, non-interlace" option.

Everything I'm capturing to hard drive as AVI, and then converting to MPEG 2, is sourced from VHS, so I'm assuming that all of it is interlaced.

I want to eventually burn SVCD's from these files to be played on my standalone DVD player and TV. I live in the USA. My dvd player is "progressive scan".

So, I would choose (using the wizard template for TMPGEnc) "interlace" under Expert Setting for Source. However, for the Encode Mode later in the template, what would I choose, interlace or non-interlace, based upon my DVD/TV setup mentioned above? Basically, would I keep it interlaced or de-interlace it?

Thanks,

Brian

[KetchSumAir]

Firstly, I'd say that using the TMPG Wizard usually does more harm than good (generally worst quality, etc). On the other hand, using the templates that come with it ARE a good starting point.

Now to answer your question:

TMPG will not de-interlace the movie unless you tell it to by clicking the "de-interlace" box. Or by using inverse telecine.

Also, there are several ways of de-interlacing, as it takes a LOT of reading to truly understand it.

So, the question becomes : Do you need to de-interlace? The general consensus is yes, if you're driving a HDTV (from a progressive DVD player) or computer monitor. Otherwise, it's more debatable(sp).

My personal reccommendation (since I have a HDTV, and progressive-scan DVD player) is to use inverse-telecine(IVTC), setting it up to be played in "progessive mode" on your DVD player. This gives me the best picture quality by far.

Here is a TMPG IVTC guide:

http://www.doom9.org/index.html?/mpg/tmpg-ivtc.htm

For more info on telecined, and interlaced video, here's an excellent article:

http://www.hometheaterhifi.com/volume_7_4/dvd-benchmark-part-5-progressive-10-2000.html

If you want to get in "read deep" check out these links:
https://www.videohelp.com/forum/viewtopic.php?t=156412

http://www.100fps.com

That gets you the proper MPEG. Since I have a DVD-burner, I'm unsure what the SVCD format allows. Assuming it allows 23.97fps progessive, you'll be fine.

Enough rambling. Hope this helps.

P.S. I believe I've followed rules about the links, but pls forgive as this is my 1st post!

[metranil]

Hi,

Thanks for the help and links.

One bit of the puzzle I left out: while my DVD player is progressive scan, my TV isn't HDTV, just run-of-the-mill Sanyo TV. Would that make a difference, once again, in choosing the de-interlacing option for proposed SVCD viewing?

Brian

[KetchSumAir]

Depends on the size of the TV.

If it's 32" or less, I, personally, haven't found a difference in the percievable quality. However, my 55" HDTV can really show encoding byproducts.

One thing to consider is IVTC will also reduce the file size by approx 20%, so many people do this just for this reason alone.

[KetchSumAir]

One thing I forgot to mention:

It also depends on the VHS source. If it's animated, or recorded from a televised broadcast, the IVTC process can drastically change (no standard rules apply across the board for these kinds of videos).

However, for normal movie backups, what I said applies.

There is a site called http://www.lukesvideo.com - this site explains animated videos in detail.

[phatslug]

edit: nevermind