Looks like wierd interlace artifacts at DVinfo.net

Kevin Merker · May 6th, 2003, 10:22 PM

I don't know what I am doing but I am getting what looks like interlace artifacts capturing 24p in Vegas 4 at 24p using the template in Project Properties
NTSC DV 24p (720x480, 23.976 fps)
720 X 480
none (progressive scan )
23.976 (IVTC Film)
0.9091 (NTSC DV)
Deinterlace method = NONE

Is there some thing I am missing or should do?

Kevin

Peter Jefferson · May 8th, 2003, 10:03 AM

are u using a PC monitor or external when viewing?
It could be your monitors interlacing...

Dennis Adams · May 9th, 2003, 01:34 PM

0) Do you have the 4.0b update?
1) Was the clip captured with the Sonic Foundry Video Capture program or something else? With scene detection on?
2) Does the clip show as 23.976 in the Media Pool (or Media Properties)?
3) Was the clip shot in 24p or 24p Advanced mode?
4) Does the interlaced frame show up every forth frame, or when?
Through the whole clip, or only part of it?

///d@

Peter Jefferson · May 9th, 2003, 10:30 PM

if ur not using 4b of vegas, it could be that.
I have notices alot of "flickering" and combing on the pc screen, but when monitoring on a television, it looks fine...

Hey dennis, i was just wondering, you know how in Vegas Capture u can set the default frame capture rate? Could this be an aspect of this type of distortion?

Dennis Adams · May 9th, 2003, 11:24 PM

Are you talking about the "custom frame rate" setting? That's just used for analog captures. The DVX100 (being a DV device) doesn't use that.

I need someone to send me a short clip and a project that exhibit this problem, because I can't get it to happen.

///d@

Peter Jefferson · May 9th, 2003, 11:29 PM

thanx for the response dennis,
much appreciated

Kevin Merker · May 12th, 2003, 10:28 PM

Hi Dennis.

To answor your questions.

0) Do you have the 4.0b update?

Yes have Vegas 4.0b

1) Was the clip captured with the Sonic Foundry Video Capture program or something else? With scene detection on?

Captured in 24p via Vegas 4.0b

2) Does the clip show as 23.976 in the Media Pool (or Media Properties)?

Yes the clip shows 24p in both windows media an viewer 23.976.

3) Was the clip shot in 24p or 24p Advanced mode?

Clip was shot in 24p. Use the preset but dropped to 1/24 shutter from 1/60.

4) Does the interlaced frame show up every forth frame, or when?
Through the whole clip, or only part of it?

NO I has artifacts at sporatic parts not like a set every 4 frames.

Where can I upload a source to you?

Kevin

Kevin Merker · May 12th, 2003, 10:29 PM

No scene detection was enabled!

Dennis Adams · May 13th, 2003, 06:37 AM

<<<-- Originally posted by Kevin Merker : No scene detection was enabled! -->>>

That's probably the problem. If there was a cadence break, the 24p inverse telecine would get off and produce bogus interlaced frames.

If this isn't the problem, drop me an email at dithermaster at hotmail * com and I'll shoot you an ftp address to upload a small clip.

///d@

Kevin Merker · May 15th, 2003, 10:44 PM

Dennis

After rereading your suggestions I realized that I was only looking at the interlaced artifacts on the computer monitor on rendered clips. The clips would play fine encoded mpeg2 using PowerDVD and would look interlaced using MS Media Player.

Most of all after reading what you wrote I realized that playing them back via firewire through my AG-DV2000 deck to my color Trinitron ntsc monitor all looked absolutly great. Man-o-man lots of days trying to fix something that wasn't broken. It had me pulling my hair out.

Again thanks ever so much!

Kevin

May 6th, 2003, 10:22 PM	#1
Kevin Merker New Boot Join Date: Mar 2003 Location: Chicago, Illinois Posts: 14	Looks like wierd interlace artifacts I don't know what I am doing but I am getting what looks like interlace artifacts capturing 24p in Vegas 4 at 24p using the template in Project Properties NTSC DV 24p (720x480, 23.976 fps) 720 X 480 none (progressive scan ) 23.976 (IVTC Film) 0.9091 (NTSC DV) Deinterlace method = NONE Is there some thing I am missing or should do? Kevin

May 12th, 2003, 10:28 PM	#7
Kevin Merker New Boot Join Date: Mar 2003 Location: Chicago, Illinois Posts: 14	Interlace like artifacts Hi Dennis. To answor your questions. 0) Do you have the 4.0b update? Yes have Vegas 4.0b 1) Was the clip captured with the Sonic Foundry Video Capture program or something else? With scene detection on? Captured in 24p via Vegas 4.0b 2) Does the clip show as 23.976 in the Media Pool (or Media Properties)? Yes the clip shows 24p in both windows media an viewer 23.976. 3) Was the clip shot in 24p or 24p Advanced mode? Clip was shot in 24p. Use the preset but dropped to 1/24 shutter from 1/60. 4) Does the interlaced frame show up every forth frame, or when? Through the whole clip, or only part of it? NO I has artifacts at sporatic parts not like a set every 4 frames. Where can I upload a source to you? Kevin

May 12th, 2003, 10:29 PM	#8
Kevin Merker New Boot Join Date: Mar 2003 Location: Chicago, Illinois Posts: 14	No scene detection was enabled! No scene detection was enabled!

May 13th, 2003, 06:37 AM	#9
Dennis Adams Regular Crew Join Date: May 2003 Location: Madison, WI Posts: 123	Re: No scene detection was enabled! <<<-- Originally posted by Kevin Merker : No scene detection was enabled! -->>> That's probably the problem. If there was a cadence break, the 24p inverse telecine would get off and produce bogus interlaced frames. If this isn't the problem, drop me an email at dithermaster at hotmail * com and I'll shoot you an ftp address to upload a small clip. ///d@

May 15th, 2003, 10:44 PM	#10
Kevin Merker New Boot Join Date: Mar 2003 Location: Chicago, Illinois Posts: 14	Re: No scene detection was enabled! Dennis After rereading your suggestions I realized that I was only looking at the interlaced artifacts on the computer monitor on rendered clips. The clips would play fine encoded mpeg2 using PowerDVD and would look interlaced using MS Media Player. Most of all after reading what you wrote I realized that playing them back via firewire through my AG-DV2000 deck to my color Trinitron ntsc monitor all looked absolutly great. Man-o-man lots of days trying to fix something that wasn't broken. It had me pulling my hair out. Again thanks ever so much! Kevin

May 8th, 2003, 10:03 AM	#2
Peter Jefferson Inner Circle Join Date: Apr 2003 Location: Aus Posts: 3,884	are u using a PC monitor or external when viewing? It could be your monitors interlacing...

May 9th, 2003, 01:34 PM	#3
Dennis Adams Regular Crew Join Date: May 2003 Location: Madison, WI Posts: 123	0) Do you have the 4.0b update? 1) Was the clip captured with the Sonic Foundry Video Capture program or something else? With scene detection on? 2) Does the clip show as 23.976 in the Media Pool (or Media Properties)? 3) Was the clip shot in 24p or 24p Advanced mode? 4) Does the interlaced frame show up every forth frame, or when? Through the whole clip, or only part of it? ///d@

May 9th, 2003, 10:30 PM	#4
Peter Jefferson Inner Circle Join Date: Apr 2003 Location: Aus Posts: 3,884	if ur not using 4b of vegas, it could be that. I have notices alot of "flickering" and combing on the pc screen, but when monitoring on a television, it looks fine... Hey dennis, i was just wondering, you know how in Vegas Capture u can set the default frame capture rate? Could this be an aspect of this type of distortion?

May 9th, 2003, 11:24 PM	#5
Dennis Adams Regular Crew Join Date: May 2003 Location: Madison, WI Posts: 123	Are you talking about the "custom frame rate" setting? That's just used for analog captures. The DVX100 (being a DV device) doesn't use that. I need someone to send me a short clip and a project that exhibit this problem, because I can't get it to happen. ///d@

May 9th, 2003, 11:29 PM	#6
Peter Jefferson Inner Circle Join Date: Apr 2003 Location: Aus Posts: 3,884	thanx for the response dennis, much appreciated

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