In TV : interlaced video has the same quality as the de-int

[LordVader]

We can't see, quality difference in a computer, because of the DirectDraw.

but an interlaced video has the same quality as the same video ( but de-interlaced ) right ?

so, interlaced videos looks with better resolution in the TV or DVD players kill the resolution in the playback ?

they look exactly the same as a de-interlaced video ?

[lordsmurf]

I'm not exactly sure what you're asking, but I think the answer is "no".

The interlace is required to retain all quality of the footage.

Interlaced footage looks best on tv.

Progressive looks best on a computer.

DirectDraw has nothing to do with it. Some software (like PowerDVD and ATI MMC) uses bob/weave filters to remove most interlace and to emulate interlaced playback conditions.

De-interlaced video tends to be jerky and look like crap. Even bob/weave, the best of them all, blurs some. Blend makes a blurry mess. Dropping odd or even field makes zig-zaggy video. Deinterlacing essentially dumps half the video data in the trash.

[overloaded_ide]

So your saying no need to de-interlace a VHS capture before buring a DVD with it right. Or at least if the main purpose is to watch it on a TV!

[LordVader]

i don't know how to explain the horrible movement of the image caused when VHS interlaced captured videos are on my DVD player.

with your answer, i know that your not to friend of the de-interlacer filter.

So i want to know what do you do with your captured VHS, they look smooth ?

what do you do ?

[overloaded_ide]

Where are you haveing problems? Are the files playing ok on the pc before burning?

Myself, I have an ATI AIW Radeon 7500, I capture directly to mpeg2 files, then author the dvd files with Tmpgenc DVD Author and burn with same program.

My DVDs are fine on my DVD player and TV. And PC too of course.

I do not de-interlace, which is why I asked my question!

[vhelp]

Hi all.

@ LordVader..

i don't know how to explain the horrible movement of the image caused when VHS interlaced captured videos are on my DVD player.

Sure we do :P We fully understand this :P :P

with your answer, i know that your not to friend of the de-interlacer filter.

Well, as been said, it throws away some good detail, or if using the temporal
blender variations, they produce "glitsy" artifacts ie, look for "=" or similar
lines through those w/ temporal blenders, and you'll see left-over artifacts.
You can still perform a good de-interlace, but your source has to be
very good quality for this to happen.. and this depends on the eye of the
beholder, cause not all eyes see eye-to-eye

So i want to know what do you do with your captured VHS, they look smooth ?

what do you do ?

Well, this depends..
You first have to know what your source type is based of

* Is it a camcorder transfer - - this would be pure Interlace
* Is is a TV show
--what is the TV format ie,
-- -- Movie, News, Sports, Game show, Documentary, Concert etc.

If your VHS source was a camcorder transfer (ie, camcorder recorded to
a VCR's VHS tape) you would be safe to assume it is Pure Interlace.
This would require your decision to use a De-Interlace filtering step or Not.
That would depend on your final output.. ie, TV vs. PC Monitor vs. Both.
Testing (always very important) is a required trait. Aways test your scenarios

If your VHS source was a Movie ie, Superman, you would be safe to assume
that it was Telecined, and that your encoding should consist of an IVTC filter process. In other words.. changing a 29.970 fps VHS capture, to a
23.976 fps (aka, Film) conversion.. hence, no more Interlace.

All the above requires a good (in most cases) ability to make determination
of the "source type" ..
* Interlace vs. Telecine vs. Progressive
or..
* Interlace=29.970 fps
* Telecine = 29.970 fps (can be converted to 23.976 fps)
* Progressive = 23.976 or 29.970 (can be converted to 23.976 fps)

So, when you think of VHS, think the above. Don't always assume that your
VHS captures are always Interlace.. cause they are not. But what they are,
is Telecined (usual video frame pattern of 2 Interlace frames and 3 progressive
frames) In other words, not every frame is Interlaced, hence the requirement
of an IVTC filter process.
Though, in most cases, they are badly done Telecined processes, and you'll
see more Interlace or Illregular Telecined (Interlace pattern) from such
conversions done by the Station Broadcasters or Entities.

Another thing to consider is if your source is PAL based. These can also be
Interlace in all frames due to a NTSC to PAL conversion. So, that can be a
bit confusing too. But, I'm not familiar w/ PAL sources, so I really can't speak
for this process and can be in error. Anyways..

I hope that helped to clarify some issues w/ your VHS source determinations.

-vhelp

[lordsmurf]

Properly interlaced footage (correct field order is first) played back on a interlaced device (tv set, not a computer) will look perfect. I do it all the time.

[argiris]

Lesson I have learned: If you capture analog video with some cheap tv cards, then the field ordering may be actually reversed, and this will cause jittery movement on the final interlaced mpeg. Check the forums on how to determine field ordering and make sure it you have it set correctly in your mpeg encoder.

[SatStorm]

Hauppauge cards also have this problem....

You never know which fild goes first! Never! You have to check it manually before any encoding.

[gotodvdr]

Why don't we have a look on these sites

http://www.100fps.com/


http://www.lukesvideo.com/interlacing.html