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"random" pulsating pixel artifact on compression for DVD

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Oren Hercz
"random" pulsating pixel artifact on compression for DVD
on Dec 11, 2009 at 2:57:11 pm

Hi folks,

I'm trying to compress a 90 minute yoga video for DVD and am experiencing a strange pulsating pixelation artifact, that grows in intensity, then fades at certain moments in the m2v. The movie doesn't have much motion (it's a yoga video!)

I exported an uncompressed Sony XDCAM EX Quicktime, then used a droplet to compress at 5.8-7.0 VBR with AC3 audio. I'm trying a CBR encode now to see if that helps.

Any suggestions?!

Oren


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Chris Borjis
Re: "random" pulsating pixel artifact on compression for DVD
on Dec 11, 2009 at 5:17:08 pm

I've seen that as well.

the only thing I tried was upping the bitrate.

That didn't work and I ended up using a different encoder.





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Oren Hercz
Re: "random" pulsating pixel artifact on compression for DVD
on Dec 11, 2009 at 5:35:01 pm

Thanks Chris,

Using CBR seems to have fixed the problem for now, but of course, this is not ideal for achieving the best quality on a longer DVD.

What encoder have you had success with? I've heard bitvice is a good one.

Cheers,
Oren


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Chris Borjis
Re: "random" pulsating pixel artifact on compression for DVD
on Dec 11, 2009 at 9:52:03 pm


yeah bitvice for mac works really well.

I actually had a friend do it with procoder.

I just couldn't get the size down to fit with cbr.



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Rafael Amador
Re: "random" pulsating pixel artifact on compression for DVD
on Dec 12, 2009 at 1:02:44 pm

Yeah, Oren, if you are doing DVDs that length in a regular basis you should consider other options.
Rafael

http://www.nagavideo.com


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