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DV export quality
I’ ve seen a lot of posts giving the advice to export to DV before going to DVD, or any other application.
I have done several tests in the past using the Mainconcept codec with DV vs. uncompressed, and there is a noticeable difference in quality (Mainly mpeg2 having to deal with the added noise), and I mean a much bigger one than I originally imagined.
So my take on it is only export to DV if you have to go back to DV tape, unless you aren’t picky about quality, or if you are seriously broke and can’t afford a bigger hard drive…
Now, I do have a question… It is a given that Premiere will recompress at 5:1 any clip with added titles and effects, but does anyone really know how it deals with unaltered clips, say having only straight cuts all the way through in a given sequence ?
Vince
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4 Replies
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[Vincent Becquiot] “It is a given that Premiere will recompress at 5:1 any clip with added titles and effects”
Hmm…I don’t know about this. Any links to point us to this information? Also, to answer the second part of the question: If all you have are straight cuts, then there really isn’t anything to “recompress”, unless you are going to an inferior format, such as MPEG2, MPEG1, WMV, QT, FLV etc…
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Aanarav,
I don’t have any solid info on that other than forum archives. Maybe Steven or someone else can confirm this…
It only makes sense to me that any clip with added information will have to be re-compressed to a standard DV ratio, thus creating a generation loss. Unless Premiere has a different way to handle added info to a clip without recompressing from scratch ? I would indeed love a confirmation on that.
Vince
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Vince,
I am sure that there is some compression. However, I am not certain on the compression ratio.Aanarav Sareen
premiere@asvideoproductions.com -
If your project is a DV project, then Premiere decompresses/recompresses everything into DV for display in the Monitor Panel.
A lossless alternative to uncompressed .avi is the HuffYUV codec, and once it’s installed, you can set up a Premiere project using that codec through the Custom Desktop editing mode.
Encore will happily accept an .avi file that uses the HuffYUV codec. That way you get to use Encore’s automatic transcoding to match the bitrate to your available disc space on the DVD.
You can also export from Premiere Pro to a DVD-compliant mpeg 2 file that can be authored/burned by just about any authoring/burning application.
Bottom line: DV doesn’t have to be involved at all if you don’t want it to be.
HTH,
JeffThe Focal Easy Guide to Adobe Encore DVD 2.0
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