Pixelation of JPG stills when rendering to WMV? at DVinfo.net

Sam Renkin · November 17th, 2008, 01:34 PM

Well, just when I think I've gotten the hang of it, along comes a new issue to stump me and this one has me upset because I've just finished editing 75 individual customer interview sound bites from 17 different interviews, and after rendering each of them I have discovered a pixelation issue:

Each clip begins and ends with a JPG still shot of the interview subject (captured from the timeline at 873 x 480, the same pixel resolution as the widescreen DV footage). There is a 15 frame dissolve from the still to the interview footage at the head, and another 15-frame dissolve back to the still image at the end.

After rendering the clips as WMV files (640x360, 500k bit rate), the still shot appears pixelated before and during the dissolve. What is going on here? Is this a compression artifact from rendering, or is there some other setting I should be minding? Please help - I have 75 clips to fix pronto!

Sam

Hugh Mobley · November 17th, 2008, 08:15 PM

Try saving or converting jpeg to different format, png or tiff

Sam Renkin · November 17th, 2008, 10:50 PM

Thanks - should I try to make a larger file (higher pixel count) or just create a file type other than JPG?

Sam

November 17th, 2008, 01:34 PM	#1
Sam Renkin Regular Crew Join Date: May 2008 Location: Atlanta GA Posts: 62	Pixelation of JPG stills when rendering to WMV? Well, just when I think I've gotten the hang of it, along comes a new issue to stump me and this one has me upset because I've just finished editing 75 individual customer interview sound bites from 17 different interviews, and after rendering each of them I have discovered a pixelation issue: Each clip begins and ends with a JPG still shot of the interview subject (captured from the timeline at 873 x 480, the same pixel resolution as the widescreen DV footage). There is a 15 frame dissolve from the still to the interview footage at the head, and another 15-frame dissolve back to the still image at the end. After rendering the clips as WMV files (640x360, 500k bit rate), the still shot appears pixelated before and during the dissolve. What is going on here? Is this a compression artifact from rendering, or is there some other setting I should be minding? Please help - I have 75 clips to fix pronto! Sam

November 17th, 2008, 08:15 PM	#2
Hugh Mobley Major Player Join Date: Nov 2006 Location: Placentia, Calif Posts: 540	Try saving or converting jpeg to different format, png or tiff __________________ Hugh Mobley www.petplanetvideos.com http://exposureroom.com/members/hmobley.aspx/

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November 17th, 2008, 10:50 PM	#3
Sam Renkin Regular Crew Join Date: May 2008 Location: Atlanta GA Posts: 62	Thanks - should I try to make a larger file (higher pixel count) or just create a file type other than JPG? Sam