Strange motion blur/ghosty image on DV at DVinfo.net

John Yamamoto · August 26th, 2007, 02:31 AM

Hi, i m using vegas 6 and i converted some HDV footage to DV codec and i used virtualdub to check it;s progressive 25FPS , and not matter how i set at the vegas ( progressive/lower field/upperfield) it's still have a ghosty image from previous frame. it lookd like a motion blur and i dont know why i cant take it out

i suspect that becasue i chnage the frame rate ( i used DVHScap and it was in wrong -- from VJC GYHD101E it captures at 50FPS.
so i use virtualdub to correct it to make the audio sync at 25.021FPS

anyone have idea how to deal with it??

thanks
JY

Douglas Spotted Eagle · August 26th, 2007, 09:35 AM

Odds are that you reversed fields or inserted fields in the conversion. If this is the case, you'll need to reconvert, if you've rendered fields in the incorrect order or inserted fields into a progressive stream. Anything else will cost you resolution.

John Yamamoto · August 29th, 2007, 10:50 PM

HI Doug
I finally found what is wrong
after i disable sampling then it's OK

BTW which article you mention u do most job on Vegas, even u can use avid and FCP? i always try to find this article to show to my students

thanks
JY

Douglas Spotted Eagle · August 30th, 2007, 07:52 AM

HD Magazine did an interview with me in which I mention I prefer Vegas over Avid or FCP, even though I'm certified in all of them.
For me....they're just tools. I happen to prefer Vegas. Every award I've received, stemmed from a project created in Vegas. Every project I've ever finished really fast....was done in Vegas.
FCP and Avid are both good tools, but due to their need for very broad use, they aren't very deep. Somewhat like good business; either you're vertical or horizontal in the market if you want to get along. Try doing both, and generally it doesn't work. In Vegas, it works.

Emre Safak · August 30th, 2007, 08:18 AM

Deep in what sense? I am led to believe AVID has the most advanced features.

Douglas Spotted Eagle · August 30th, 2007, 08:41 AM

Quote:

Originally Posted by Emre Safak

Deep in what sense? I am led to believe AVID has the most advanced features.

Whomever has led you to believe this is simply nuts, if you're referring to Media Composer or Xpress.
mixed resolutions/frame rates/file types are not possible without conforming.
Various compositing tools not existent.
Audio is terrible/virtually non-existent by comparison.
Streaming output of any value? Forget it.
MPEG tools? AVCHD tools? DVD Authoring? Non-existent.
Color correction tools (stock, not add-ons) are not as robust.
Marquee is quite a bit better, however. :-)

August 26th, 2007, 02:31 AM	#1
John Yamamoto Regular Crew Join Date: Mar 2004 Posts: 94	Strange motion blur/ghosty image on DV Hi, i m using vegas 6 and i converted some HDV footage to DV codec and i used virtualdub to check it;s progressive 25FPS , and not matter how i set at the vegas ( progressive/lower field/upperfield) it's still have a ghosty image from previous frame. it lookd like a motion blur and i dont know why i cant take it out i suspect that becasue i chnage the frame rate ( i used DVHScap and it was in wrong -- from VJC GYHD101E it captures at 50FPS. so i use virtualdub to correct it to make the audio sync at 25.021FPS anyone have idea how to deal with it?? thanks JY

August 26th, 2007, 09:35 AM	#2
Douglas Spotted Eagle VASST Join Date: Jan 2004 Location: Stockton, UT Posts: 5,648	Odds are that you reversed fields or inserted fields in the conversion. If this is the case, you'll need to reconvert, if you've rendered fields in the incorrect order or inserted fields into a progressive stream. Anything else will cost you resolution. __________________ Douglas Spotted Eagle/Spot Author, producer, composer Certified Sony Vegas Trainer http://www.vasst.com

August 29th, 2007, 10:50 PM	#3
John Yamamoto Regular Crew Join Date: Mar 2004 Posts: 94	disable sampling HI Doug I finally found what is wrong after i disable sampling then it's OK BTW which article you mention u do most job on Vegas, even u can use avid and FCP? i always try to find this article to show to my students thanks JY

August 30th, 2007, 07:52 AM	#4
Douglas Spotted Eagle VASST Join Date: Jan 2004 Location: Stockton, UT Posts: 5,648	HD Magazine did an interview with me in which I mention I prefer Vegas over Avid or FCP, even though I'm certified in all of them. For me....they're just tools. I happen to prefer Vegas. Every award I've received, stemmed from a project created in Vegas. Every project I've ever finished really fast....was done in Vegas. FCP and Avid are both good tools, but due to their need for very broad use, they aren't very deep. Somewhat like good business; either you're vertical or horizontal in the market if you want to get along. Try doing both, and generally it doesn't work. In Vegas, it works. __________________ Douglas Spotted Eagle/Spot Author, producer, composer Certified Sony Vegas Trainer http://www.vasst.com

August 30th, 2007, 08:18 AM	#5
Emre Safak Trustee Join Date: Feb 2004 Location: Brookline, MA Posts: 1,447	Deep in what sense? I am led to believe AVID has the most advanced features.