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downsampled HD footage looks terrible on TV!

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james cox
downsampled HD footage looks terrible on TV!
on Mar 15, 2008 at 12:47:49 am

Hi, this is my first post on here, and any help or guidance would really save my life! I've been making a video in FCP using a mix of footage from an NTSC DVX100 and converted HD to SD footage from an NTSC HVX200. I exported it to region 0 NTSC in DVDSP (Im in the UK but this dvd will be distributed worldwide, hence the NTSC)..... All looks great, and when I burnt a test DVD, it worked fine on my macbook, G5 desktop and also on my PAL DVD player / TV. However, when I tested it on a different PAL DVD player and TV, strangely the footage shot on the HVX looked absolutely awful, the movement is extremely jittery and strobe-like, while the footage shot on the DVX is fine. Does anyone know the cause of this problem and how I can prevent it? I'm thinking that maybe it was the way I converted the HD footage? Many thanks in advance!!

James


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Ben Waggoner
Re: downsampled HD footage looks terrible on TV!
on Mar 15, 2008 at 5:14:53 pm

Since it works well on one DVD player and badly on another, I'd guess there's a problem with the second player's NTSC conversion.

My compression blog: http://on10.net/blogs/benwagg/

My compression class at Stanford: http://digitalmediaacademy.org/courses/video-compression-training.html


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james cox
Re: downsampled HD footage looks terrible on TV!
on Mar 15, 2008 at 5:21:50 pm

thanks, i'll check it out! But would that still be the case considering that the footage from different sources acts differently in the dvd?



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