DVL-Digest 1242 - Postings: Index AUDIO & New Macintosh Computers DV Codecs and compression ..Which combination produces the b Shake vs. AE - (2) - (3) AUDIO & New Macintosh Computers - "Valerie Shoaps" >How did this all start? I've got other things to do for now... > >More later, if there is an interest. Danny, Thanks for taking the time. This is an eye opener. Look forward to hearing more. I'd love to hear "the real world" about DP's and any of the 10 bit capture cards, especially Kona. I'm being pushed by pricepoints. Valerie DV Codecs and compression ..Which combination produces the b - Adam Wilt > It is my understanding that there are primarily 4 existing DV codecs ... > Canopus, Matrox, Apple & Microsoft. Vegas Video, I hear, now has its own codec. MainConcept in Germany offers their own DV codec over the web; it is said to be quite nice. Avid's DV codec in XPress DV 3.5 is also said by some to be stunning -- Avid had been using the Canopus codec but built their own because they wanted even better quality. I've tested Apple, Matrox, Canopus, Radius (EditDV/Cinestream), C-Cube (hardware codec used in most hardware-accelerated DV NLEs) and Microsoft; the first three are pretty much tied for first place, differing in slight ways with one being better on one scene and another being better on another. The C-Cube hardware is not bad, but it's not quite the same quality as Apple/Matrox/Canopus. RadDV and Microsoft DX8 are noticeably worse in side-by-side comparisons with the top three or in multigeneration tests, but not so bad that I wouldn't use 'em for a one-generation render. Some older codecs, like Microsoft DX6 or Apple prior to QT 4.1.3, were pretty awful! I hope to test the Avid codec in the next couple of weeks, and the MainConcept and Vegas codecs shortly thereafter, and post a completely revamped codec comparison page within a couple of months. Of course, work has a way of using up all the free time I'd put into codec testing, so all dates are approximate... ;-) > My objective is to deliver, from a DV original, the best quality > compressed > files (mpeg, avi, qt, real) for VCD, DVD and streaming using either > Procoder > or Cleaner. What would be the recommendation? The key item here is the final decompression from DV prior to recompression into whatever other formats you're going to distribute. Most of the codecs do a fine job of the actual decompression part; where they differ is in handling luma ranges during YUV/RGB trancoding and how they interpolate the 4:1:1 or 4:2:0 chroma back to 4:2:2 YCrCb or 4:4:4 RGB. My choice for this final transcoding from DV to whatever else would be the Matrox codec, because it gives you full control over luma ranges (as does RadDV, for that matter) and also control over whether it interpolates the chroma data. For the most part, you'll want that interpolation done on the transcoding pass. Most other codecs don't seem to interpolate (they simply replicate the chroma data over the sampling area), assuming that the low-pass nature of video displays will smooth the chroma out, and for the most part, they're right. That's fine for display, and prevents chroma smear during editing and compositing, but it can lead to blocky color during (a) chroma keying and (b) transcoding. My two cents, AJW [Any bizarre line breaks courtesy of OS X's Mail.app. Think Different!] Shake vs. AE - "Valerie Shoaps" >FCP covers Premiere and a high percentage of AE.. I really can't swallow that. FCP is not nearly the compositing tool that AE is. What I think it all means is that Apple is moving about to aquire some of the major high end motion grpahics tools and dump the Win platform on them. They've bought out one or two others. The eventual end result? To do high end work, you've got to use a Mac. Shrewd. "Think differently... as long as you do it our way". I have a brown shirt here somewhere... Shake vs. AE - "Perry Mitchell" >Being trapped with only Mac solutions is depressing. Shake vs. AE - "Perry Mitchell" From: Julian Luttrell Perry, I find myself suddenly needing to get a new PC - my problem is a clash between Edition and my Digisuite system. What motherboard did you use? (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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