Need Help on Codecs replacement question

Discuss anything about video editing, HD, codecs, etc......
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backert1
Posts: 53
Joined: Tue Apr 05, 2005 6:29 pm

Need Help on Codecs replacement question

Post by backert1 »

Hello,

I am having issues using ulead videostudio v9.0 on windows xp sp2 and need a quick explanation of a few things. I am recording from an 8mm hi-8 video camera connected to an ADS-555 Pyro A/V converter box. Originall, I was recording to MPEG-2 format. When I burned this to DVD, the burning process worked fine but there was a lot of pixelation around any movement in a frame. Ulead and ADS advised me to record in AVI uncompressed format. That did and the quality even in Videostudio is much better. The problem is when I try to burn to a DVD, I get an error message just after the begging of the recording process indicating that the codec is unsupported. Using AVIcodec the codec associates with the recorded video is a sony video codec. Ulead suggested that I should switch to the Divx codec. I downloaded and installed this from the Divx site. What I don't understand is how to specify this codec is used on the next recording for Videostudio. I do still need the sony codec as it is used to record from a TV input board. How do I do this? Thanks in advance.........
skier-hughes
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Post by skier-hughes »

avi is a container, Audio Video Interleaved.

Any number - 100's - of codecs can be used to create an avi file.
These can be uncompressed, dv, divx, xvid, mpeg1, mpeg2, mjpeg........

Uncompressed tends to be in the order of 60gb per hour.
DV.AVI is the most common of the lossless formats of avi, which takes up 13gb per hour.
All the others have more compression, mpeg2 is about 4gb per hour.

The leaset amount of comrpression the better.

Uncompressed is generally unwieldly, so dv.avi is the format to go for.

Most of the compressed formats are lossy, so each time you save them, they re-compress themselves, meaning you lose some quality.

I suspect using uncompressed is unsupported, so use dv.avi

Hope this helps in understanding, even if it doesn't answer the question exactly.
backert1
Posts: 53
Joined: Tue Apr 05, 2005 6:29 pm

Post by backert1 »

thanks for the response. I understand the compression vs format tradeoff. what I don't understand about codecs is that if I use the same ADS pyro box and connect it to my desktop, I have codec errors that prevent me from burning a dvd with ulead software. the desktop automatically assigns a sony vide codec to the avi file. the samem hardware and ulead software work fine when i record on my laptop which does assigns a different codec to the avi file. how does one change the codec that is selected by ulead (or any program) to use to record a file? there is no reason since I am using an external box that I have to use the sony codec.....
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