Quantcast Resizing Problem OTA HDTV Capture to DVD - Page 2 - digitalFAQ.com Forums [Archives]
  #21  
11-02-2006, 05:08 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by nicksteel
which would be best for you to test?

(Incred's was nonanamorphic in nonanamorphic out with tmpgenc set to 16:9.)
According to me the file you sent before is correct. If you tell my that this one gave you a cropped image on your TV, then I will author a DVD with it and see if I have the same. Else provide me an other file that you want me to test .
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  #22  
11-02-2006, 05:31 AM
nicksteel nicksteel is offline
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I've tried so many combinations . Let me reencode an original capture HDTV section as:

FitCD nonanamorphic in nonanamorphic out (I'll post FitCD screen) with TMPGEnc set to 4:3. This should be most "standard" settings.

OK?

For reference, a segment of the original HDTV OTA capture is at:

http://www.yousendit.com/download/2guqymqfUTk%3D
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  #23  
11-02-2006, 06:50 AM
nicksteel nicksteel is offline
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Phil,

A seven second encoded m2v and the ac3 are at:

http://download.yousendit.com/79877F2903F9736F
http://download.yousendit.com/0825E8B64921F6D9


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  #24  
11-02-2006, 07:10 AM
nicksteel nicksteel is offline
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Also, my DVD player doesn't seem to like 7sec clips, so I authored in DVDLabPro as 2 movies with 2 menu items. Same clip in both. That plays.

How much overscan should I get playing this on a 4:3 TV?
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  #25  
11-02-2006, 08:41 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by nicksteel
Also, my DVD player doesn't seem to like 7sec clips, so I authored in DVDLabPro as 2 movies with 2 menu items. Same clip in both. That plays.
Be carreful that this trick can introduce problems (animated menu are managed differently by the player than regular movie tracks).

Quote:
How much overscan should I get playing this on a 4:3 TV?
Generally 2 ( = 16 pixels) is a value that fit to all screens.

Edit: will try your files this evening, at home.
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  #26  
11-02-2006, 10:42 AM
nicksteel nicksteel is offline
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Quote:
Originally Posted by Dialhot
Quote:
Originally Posted by nicksteel
Also, my DVD player doesn't seem to like 7sec clips, so I authored in DVDLabPro as 2 movies with 2 menu items. Same clip in both. That plays.
Be carreful that this trick can introduce problems (animated menu are managed differently by the player than regular movie tracks).

Quote:
How much overscan should I get playing this on a 4:3 TV?
Generally 2 ( = 16 pixels) is a value that fit to all screens.

Edit: will try your files this evening, at home.
Thanks, Phil I meant that I used the same 7sec m2v/ac3 to in 2 DVDLabPro movies. The menu was simply 2 text objects linked to the movies. No animation. Only did this because my player doesn't somehow like single 7sec movies.
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  #27  
11-02-2006, 02:51 PM
Dialhot Dialhot is offline
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So I tried your test (that is actually 3 second long, not 7 ).
The picture is cut few pixels at the right of the HD logo. That represents 30 pixels, more or less, whatever the player or the screen I use (my regular 4:3 TV set of my HDTV rear-projector).

I know that my system had a overscan between 2 and 3 (16 - 24 pixels), so 30 is weirdly big. But I don't find any reason for that.

Anyway I suggest you to encode with a resized (not overlayed) overscan of 2 (16 pixels) and see if this is better on your system.
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  #28  
11-02-2006, 02:58 PM
nicksteel nicksteel is offline
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Thanks Phil

I had thought of overscan, that's why I asked about the number of pixels.

I'll encode tonight with overscan 2 and see how it turns out.

Again, thanks for going to all the trouble! I really appreciate it.
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  #29  
11-02-2006, 03:14 PM
Dialhot Dialhot is offline
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No problem.
Just to know : what are you using to capture the original source ? Did you see that the file uses a 30 pictures long GOP and weird matrixes (Intra is the original MPEG2 matrix but Non-intra is all composed of the value 16).
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  #30  
11-02-2006, 03:26 PM
nicksteel nicksteel is offline
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Quote:
Originally Posted by Dialhot
No problem.
Just to know : what are you using to capture the original source ? Did you see that the file uses a 30 pictures long GOP and weird matrixes (Intra is the original MPEG2 matrix but Non-intra is all composed of the value 16).
dvr-ms captured with ATI OTA HDTV Wonder with MCE. I think VideoReDO has options while processing mpeg output. Any suggestions I can play with?
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  #31  
11-02-2006, 04:51 PM
Dialhot Dialhot is offline
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I would use a shorter GOP, 30 means a lot of B frames so a quality lesser than a standard DVD stream (length = 15 or 1.

For the matrix I don't know the effect of a non-intra matrix composed of only "16,16,16,16..." so I can't say.
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  #32  
11-03-2006, 06:52 AM
nicksteel nicksteel is offline
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Quote:
Originally Posted by Dialhot
Anyway I suggest you to encode with a resized (not overlayed) overscan of 2 (16 pixels) and see if this is better on your system.
.

Quote:
Originally Posted by Dialhot
I would use a shorter GOP, 30 means a lot of B frames so a quality lesser than a standard DVD stream (length = 15 or 1.

For the matrix I don't know the effect of a non-intra matrix composed of only "16,16,16,16..." so I can't say.
And the answer is .......................you are right, as usual!

I changed GOP to 18 (NTSC DVD) in the VideoReDo output mpeg options and created another source mpeg.

Made two test encodes, one with overscan2, another with overscan3.

Overscan2: Saw entire logo and and additional width of 1/2 the "D" in "HD".

Overscan3: Saw some more of the picture.

I'll opt for overscan2, as some TV's may not crop the same amount of pixels as mine and I don't know the effect on a HDTV.

I encoded as fitcd anamorphic out with tmpgenc set to 16:9, changed fps to film.

I am going to ask on the VideoReDo forum concerning matrices. I don't know how they are converting from dvr-ms to mpeg. I do like VideoReDo.

Overscan2

dgdecode_mpeg2source("E:\lo\Lost_04_10.d2v",idct=7 )
selecteven()
Telecide(order=1, guide=1, gthresh=10, post=2, vthresh=50, dthresh=7, blend=false, show=false)
Decimate(cycle=5, mode=0, threshold=0, threshold2=3, quality=2, show=false)
LanczosResize(656,448,0,0,1280,720)
RemoveGrain(mode=1).TemporalSoften(2,3,3,8,2)
AddBorders(24,16,24,16)
ConverttoRGB24()
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  #33  
11-04-2006, 09:37 AM
nicksteel nicksteel is offline
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Phil,

Having resolved the overscan thing, need an opinion. (Am still working with the Lost HDTV captures.)

I want to put four 42 minute episodes on a DVD. I can encode at CQ 90% as above, author in DvdLabPro (with Mp2 audio) and create a DVD that shows 91% in DVDShrink to fit to DVD.

In your opinion, would it be better to encode at a 85 CQ which does not require DVDShrink (fits DVD)?

I know that some time ago, there were discussions on the merits of processing with DVDShrink 2 times, etc. I want to avoid further testing and burn these things.
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  #34  
11-04-2006, 11:55 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by nicksteel
In your opinion, would it be better to encode at a 85 CQ which does not require DVDShrink (fits DVD)?
I myself encode at 85% insteed of 90 half of the time, the loss in quality is not so big. Avoid using DVDShrink if you can.
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  #35  
11-04-2006, 03:57 PM
nicksteel nicksteel is offline
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Thanks, turned out CQ 85 with AC3 exactly filled DVD without DVDShrink.
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