Using Filter of TMPGEnc 3.0 XPpress; interlace/progressive

[yr1963]

Hi Guys,

I use TMPGEnc 3.0 XPpress to convert my DV-AVI to MPEG2.
I found that the quality of the DVD or MPEG2 made with progressive convertion looking much more clear and perfect on TV compared to interliced at the same range of bitrate (experienced 4500-7000kbps). The problem is only with the stroboscope effect appearances when the objects or the camera moves.
Is there some interlace/progressive encoding method or encoder allows to keep the still movie parts progressive and to interlace when only the objects start acting?
Does somebody know if there is some filter method on TMPGEnc 3.0 XPpress that solves this problem?
There are three different filter titles in TMPGEnc 3.0 XPpress:
1 -deinteralce; 2- deinterlace field; deinterlace method.
Does somebody know what it means and how to use these options?

Thanks in advance

[guns1inger]

How did you compare interlaced versus progressive output ?

If it was on the PC only, then you haven't done a real comparison. The PC uses a progressive display. Some players, such as PowerDVD will deinterlace, but most produce very poor display of interlaced material. The only way to test it correctly is on your TV.

[yr1963]

Hi guns1inger

Thanks for reply,

Absolutely right, I meant the comparision test on TV, not on PC display.

[edDV]

Hi guns1inger

Thanks for reply,

Absolutely right, I meant the comparision test on TV, not on PC display.

If your goal is best quality for TV display from a DVD, keep it interlace. Conversion to progressive has severe quality issues.

If the source is film with a true 3:2 (2:3) field sequence, you can achive some lossless compression through various "inverse telecine" processes. This is a legitimate technique if you do it properly.

If the source is a video camera, almost any kind of PC based deinterlacing will kill picture quality in various ways depending on the technique used.

[yr1963]

Thanks for reply, edDV

I only said that on TV diplay the DVD or MPEG2 (video movie made on digital camcordr SONY PC101) made of progressive output looking much more clear - no blur, no interlaced lines - versus interliced output, excluding the scenes with moving objects showing the strobe effect.
One thing more, when digitizing from VHS (PAL system) through the camcoder Sony DCR PC101E, the interlaced lines are very hard on moving objects, for example the moving fingers of a guitarist, on TV disply.
I try now the BOB/progressive scan - "Displaying every field (so you don't lose any information), one after the other (= without interlacing) but with 50 fps" (look on http://www.100fps.com/). The TmpgEnc has this option. May by this is a better solution.

[edDV]

If you leave it interlaced you will see none of that on a TV. It will play perfectly. The motion effects you are seeing happen only on a raw computer progresive display that that shows both fields at the same time. The fields were taken 1/50 second offset so you see this "DISPLAY" problem. There is no problem with the video. It's a display problem.

PowerDVD, WinDV and several editing applications such as ULead Video Studio compute a deinterlaced display for computer monitors that shows the video properly.

If you want it to look correct on the TV, leave the video interlaced.

[yr1963]

I think I didn't explaine well the problem.

1. When the source is a DV and output to MPEG2 is interlaced, a phenomenon are:
a. blurring - considerable even on 6500-7000 kbps;
b. interlaced line - tolerant.
The output to MPEG2 progressive, reduce the blurring excellent, and the interlaced lines - fully. Is it strange?
A fee for this pleasure is a strobe on moving scenes.
Thus, the main problem here is a blurring. Camcorder source transmitting directly to TV looking much better.

2. When the source is an old VHS analogically transmitted to DV camcorer that digitizing the signal to PC that converts it to MPEG2 interlaced, a phenomenon is a hard interlaced lines.
Output of this AVI of old movie to MPEG2 progressive, eliminate the interlaced lines completely. Is it strange?
All the above are tested on regular TV screen.

any ideas?

[edDV]

I think I didn't explaine well the problem.

1. When the source is a DV and output to MPEG2 is interlaced, a phenomenon are:
a. blurring - considerable even on 6500-7000 kbps;
b. interlaced line - tolerant.

Something is not right. Try 8,000-9,000 Kbps and see if this improves.
You need to post some screen caps so we can see if the "blurring" is compression artifacts or progressive display of interlace lines.

The output to MPEG2 progressive, reduce the blurring excellent, and the interlaced lines - fully. Is it strange?
...
Camcorder source transmitting directly to TV looking much better.

You should be seeing similar quality to playing the Camcorder to the TV. Yes fully strange and something is wrong with your process. Try a different encoder.

A fee for this pleasure is a strobe on moving scenes.

That is due to reduction of refresh from 60 fields/sec to 30 frames per sec. There are other tradeoffs with progressive as well.

2. When the source is an old VHS analogically transmitted to DV camcorer that digitizing the signal to PC that converts it to MPEG2 interlaced, a phenomenon is a hard interlaced lines.
Output of this AVI of old movie to MPEG2 progressive, eliminate the interlaced lines completely. Is it strange?
All the above are tested on regular TV screen.

any ideas?

Something wrong with the way you are doing it. Try a demo of a different encoder. VHS will never look as good as DV direct. Your goal is to make it look as good as the camcorder connected directly to the TV.