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Originally Posted by kx11
so there's no point in getting 10-bit color video lcd??
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Different usage and terms.
I would like to explain but I got no time at the moment.
Look here for an explanation on dithering.
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Originally Posted by WarpZone
I'm afraid I don't know what your answer means. I'm not a TV guy. I'm a computer guy. Could you express your answer in terms of RGB values?
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RGB values are from 0-255. 16 however is the black level for NTSC. Anything than that is "below black." 234 is white for NTSC and anything above is "whiter than white". Both terms are great when you talk computers but doesn't quite apply over NTSC/ATSC. It's really very silly. If it's below black, how can you see it? And how could you see anything whiter than white?
That's why what works on computer screens needs filtering when translated to video. In short NTSC standard is fine.
4:2:2 is an example of a chroma subsampling term. 4 is Luma or brightness. Both 2s are the red chroma and blue chroma components. 4+2+2= 8-bits. 2^8 is 256 which is enough for RGB which has values from 0 to 255. Since BD uses 4:2:2 color space. DVD uses 4:2:0 chroma subsampling, which also explains why colors POP on BD as compared to DVD.
So while HD uses the full RGB gamut of 0-255, BD cuts off this gamut at 16, since that is black, so that more bits are saved. I believe it cuts off anything beyond 234 too. So while 16 looks grey and 234 off-white, with NTSC color its perfect.
4:4:4 is full RGB. According to research, very few people can spot the difference between this and 4:2:2. 4:2:2 uses HALF the bandwidth of 4:4:4 video, which is probably the reason why HD in BD uses it.
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Well, I mean, I only have so many gigs of space on this... workstation would be too generous... let's call it a laptop. I was kinda hoping I could export the movie as an AVI, convert to MPEG, burn it to Blu-Ray and I'm done. It sounds scary when you toss around terms like "encoding engineer." You mean I'd need to hire a whole extra person just to burn it?
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Only if you want to make it mass market product. Encoding engineer, the guy who makes sure that the video is top notch, is the guy that does the compression job for audio and video.
Yes, you can do that. If your projects are short, MPEG-2 is fine. But if it has a lot of detail or fast movement, you might want to look at H.264 codec to encode the video.
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I don't know what a master tape is. Do you literally mean a tape? I don't even know what the word tape would mean in a modern context... I didn't think anyone was still using 'em.
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Yes, TV and film production still uses tapes and they're still good. We're not talking VHS here.
You "master" a tape from the telecine process or laserscan OR a direct-from-digital-files dump. Then the encoding engineer use the tape to encode.
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How many gigs of storage are we talking about on these "uncompressed HD master tapes?" How expensive is the gear to produce them?
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Quite expensive. But since you just clarified that you're the home brew type, you probably don't need it. But keep the original files! Back it up using your BD burner.
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And what video codeq should I use for uncompressed video? Do I really need one in advance, or could I just export one on demand from the original FLA?
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A video that is uncompressed doesn't need a video codec to render since it's uncompressed.
Often a video codec refers to how things get lossily compressed. A lossless uncompressed video creates a lot more work when you want to lossy-compress them; lossless uncompressed->uncompressed->lossy compress.
I think I have reached my depth here but ask away. I'm sure other REAL experts will chime in.
fuad