blending fields, when encoding ( interlaced )

[LordVader]

the fields makes a jumpy move & blends, when i play my MPEG-2 videos in my DVD player.

look fine in the computer.

but sucks in the TV. why is this ?

if i "de-interlace" and encode "non-interlaced" they look fine.

but i'm losing resolution by doing this.

Any solution ?

[aklendathu]

Does the MPEG-2 come from an analogue VHS capture ? If so, could the jumpiness come from the lack of a TBC in the video ?

I don't have a TBC and usually de-interlace (blend) my captured VHS videos using the standard VirtualDub filter. On my TV, the result is pretty good.

[LordVader]

this happens with any source.

my captures are most from directv decoder, sometimes VHS, and sometime 8mm tapes.

the source is always interlaced, but using a de-interlace filter will reduce quality, that's why i need to encode "Interlaced"

[aklendathu]

My guess is that your capture device is causing the problems you describe.

Any video played back on a TV will be played as interlaced, even a DVD with non-interlaced (progressive) video will be converted to interlaced by the DVD player.

With me it's usually the opposite from what you described. The DVD video authored from the captured VHS always looks jumpier on the PC than on the TV screen...

[LordVader]

it doesn't has anything to do with capture.

i mean:

if i rip a DVD, i get "interlaced material", right ?

so, if i re-encode the movie "Interlaced mode" again,

why should be play wrong ?


what's different in a MPEG-2 Interlaced original DVD from my MPEG-2 Interlaced DVDs ?

[Amontillado]

Could be a field order problem, try changing the field order and see what happens

[aklendathu]

it doesn't has anything to do with capture.

i mean:

if i rip a DVD, i get "interlaced material", right ?

so, if i re-encode the movie "Interlaced mode" again,

why should be play wrong ?


what's different in a MPEG-2 Interlaced original DVD from my MPEG-2 Interlaced DVDs ?

I see your point but the original DVD may or may not be interlaced (I check with DVD2AVI). When re-encoding interlaced video with TMPGEnc you have two possibilities: Top field first or Bottom field first. Usually the automatic choice should work but maybe you need to try out both and see
which works best.

[lordsmurf]

Your field orders are reversed.

[DivXExpert]

Don't Blend Fields. Its not good. And your NOT loosing resolution. The resolution is never there. It is an illusion of resolution. Bleding Fields gives you more bluring then just deinterlacing properly (IVTC/Throwaway Fields) and resizing. IVTC will get you the real resolution, because it reconstructs the image from the fields, but this is only if your source is film. That jumpy move/blend, is how blend fields works, and is the price you pay if you want your "extra resolution". Just throwaway the fields. Besides, MPEG-2 supports interlaced video, eliminating alot of de-interlacing problems.

[DivXExpert]

In other words you can leave it interlaced, and encode it that way, and not loose any of your "extra resolution".

[LordVader]

I've already tried with both fields first.

that's why i want to know what's happening.

...........

it can't be so hard guys.

are you telling me, that only Hollywood knows how to encode well interlaced videos ?

[tygrus2000]

I had plenty of similar problems with interlacing and flickering and artifacts, and it was only until I de-interlaced the source with interpolate fields and then interlace with lower field first that I was able to get rid of all artifacts. Try that, worked for me. BTW, I was using Vegas Video 4.

tygrus

[lordsmurf]

I've already tried with both fields first.
that's why i want to know what's happening............
it can't be so hard guys.
are you telling me, that only Hollywood knows how to encode well interlaced videos ?

You probably captured interlaced footage in progressive mode. In that case, no matter which interlace mode you choose, it won't look correct. If changing field order won't help, you've got some other problem.

I encode interlaced just fine. Hollywood has nothing on me. The problem is not with us.

[LordVader]

works fine, i did that with a svcd a 2 months ago, using vegas video.

But it's not the idea, i mean, compression time with VV is horrible.

i don't really know, why encoding Interlaced mode with tmpgenc or CCE, make my video incompatible.

knowing the scientific problem, will help me a lot, to find a way to do it well with many other mpeg encoders.

------

there's something we're missing, beacause, if you import a DVD vob file structure trought an DVD2AVI project, in Vegas Video, and you endode it as you say, the jumpy fields come back again.

[LordVader]

i've been staying very passive, very calm, and very rare i post here in vcdhelp.com asking for help.

i hate when people just don't read.


I said : doesn't work even recompressing ORIGINAL DVD movies.

so you come back again with : that i have a problem in my captures.

---------

If any of you know don't know, then just say: I DON'T KNOW, and i'll f#ck my self.

---------



Here's how this problem come:

programas like dvd2one, dvd shrink, makes a mpeg re-encoding to a lower bitrates, so this programs just don't care about interlaced stuffs and sh#ts. This programas just keep INTACT all parameters of the files, and just focus on the bitrate, bacause space is what we care about.

what i want to do, is the same thing, BUT MANUALLY with my OWN TEMPLATES, Keeping INTACT all the attributtes and just modify the bitrate.


The problem is........ that we have to configure all the attributes again, in a NEW template.

And here's where the problems begins.

--------------------------

Assuming that i have 29.97 VOB Files, and not 23.97p VOB FILES, the Settings will be : ???????????????

[lordsmurf]

I saw this last night, and it reminded me of this post.

But my disc and video was fine. The stupid player (not mine) was not playing the interlace properly. Did this on my discs and some commercial discs.

Could be your player, not the video.

I pressed pause and stop a few times. After a few minutes of doing this, the player quit acting stupid.

[antonv]

I have the same problem with high resolution video and I made tests with MPEG-1,2, Divx, Huffy and MJPEG that showed the following:
if there is no REAL option in capture software (except MMC) that will real-time deinterlace video, neither hardware nor capturing settings have anything to do with jumpy playback because the file plays fine on the computer.

The only problem is: how to encode this interlaced file to VCD/SVCD/DVD format without getting jumpy playback and smoother picture loosing resolution and quality ?

[pixel]

works fine, i did that with a svcd a 2 months ago, using vegas video.

But it's not the idea, i mean, compression time with VV is horrible.

i don't really know, why encoding Interlaced mode with TMPGEnc or CCE, make my video incompatible.

knowing the scientific problem, will help me a lot, to find a way to do it well with many other mpeg encoders.

------

there's something we're missing, beacause, if you import a DVD vob file structure trought an DVD2AVI project, in Vegas Video, and you endode it as you say, the jumpy fields come back again.

You said you were having problems with TMPGEnc, I hope you were reversing the field order in this when you were encoding.

I don't think I saw this anywhere in this post but the reason it looks fine on your PC is because your PC does not show interlaced pictures (just a bit of useless info).

Lordsmurf seems to have answered your q's on all of this, have you even visited his site in his sig? He has info on field order's in his old guide there.

@antonv, try reversing the field order when encoding in TMPGEnc.
Or if you capture compliant video for whatever the output is going to be, use something like DVDWS and select the "do not convert compliant file" flag.