Ed Dooley
Forum Replies Created
-
Ed Dooley
August 2, 2005 at 2:16 pm in reply to: Need a table for required bandwidth for various formats – HDCam, HDV, SDI, 10-bit 4:2:2 etcOK, last ones:
https://www.digitaltelevision.com/publish/dtvbook/ch3.shtml
and a number of the links came from:
https://www.hdforindies.com/2004/08/format-overview-what-various-tapeEd
-
Ed Dooley
August 2, 2005 at 2:14 pm in reply to: Need a table for required bandwidth for various formats – HDCam, HDV, SDI, 10-bit 4:2:2 etcAnother one:
https://www.hd24.com/compression_numbers.htmBTW, all found with a simple search 🙂
Ed -
Ed Dooley
August 2, 2005 at 2:12 pm in reply to: Need a table for required bandwidth for various formats – HDCam, HDV, SDI, 10-bit 4:2:2 etcAnd this from HDforIndies:
HDVNot really a professional format, but I’m sure some indies will use it.
HDV resolution 1:
Playback frame size: 1280×720
Acquisition frame size: 1280×720 to tape
frame rate/s: 30 fps progressiveno interlaced 720 signal, no 24p
bit depth & color space: 8 bit, 4:2:0 (alternates which color channel gets recorded)
datarate: 19MBit/sec (about 2.375 MB/sec)
compression type: MPEG-2 transport stream, with GOP (group of pictures) 15 (think of it as keyframes every 15 frames)HDV resolution 2
playback frame size: 1920×1080
acquisition frame size: 1440×1080 to tape (but the Sony upsamples 960×1080 to this)
frame rate: 60i (interlaced, no progressive options)
bit depth and color space: 8 bit, 4:2:0
datarate: 25Mbits (about 3.125 MB/sec, slightly less than DV)
compression type: MPEG-2 transport stream, with GOP (group of pictures) 15 (think of it as keyframes every 15 frames)DVCPRO HD:
1280×720 10 bit 4:2:2 at 59.94 or 60 progressive fps. 24, 25, 30 fps also possible as standard stuff, or anything from 4 to 60fps if the hardware or software frame rate converter is used.
1920×1080 10 bit 4:2:2 at 59.94 interlaced
Reality:
10 bit 1280×720 4:2:2 progressive off the HD-SDI tap gets sampled down to 8 bit 960×720 at 4:2:2 colorspace then compressed to about 5 1/2 MB/sec
10 bit 1920×1080 interlaced only off the HD-SDI tap (gets sampled down to 8 bit 1280×1080 at 4:2:2 colorspace then compressed to about 14 MB/secHDCAM
1920×1080 10 bit 4:2:2, progressive or interlaced, 24p possible (psf)
1920×1080 10 bit 4:2:2 off the HD-SDI gets sampled down to 1440×1080 8 bit at 3:1:1 colorspace then compressed to something like 22.5 MB/sec (don’t have hard #s)
HDCAM SR
1920×1080 10 bit 4:4:4, progressive or interlaced, 24p possible (psf)
Reality:
Hey, this one (finally) works well:
1920×1080 10 bit RGB 4:4:4 of the dual HD-SDI taps actually stays just that – 10 bit 1920×1080 RGB 4:4:4. It is then compressed with MPEG-4 SP (Studio Profile) with 4.27:1 compression, results in a 50 MB/sec datastream to tape. Uncompressed off the taps, that signal is about 180MB/sec for 24fps.
Panasonic D-5:
1920×1080 10 bit 4:2:2 progressive or interlaced to tape as I understand it. 1080p24 possible. The deck is $99,000. HDCAM SR seems like better quality, better deal.
-
Ed Dooley
August 2, 2005 at 2:09 pm in reply to: Need a table for required bandwidth for various formats – HDCam, HDV, SDI, 10-bit 4:2:2 etcThis might get you started:
Ed525 NTSC uncompressed;
8 bit @ 720 x 486 @ 29.97fps = 20 MB per/sec, or 70 GB per/hr.
10 bit @ 720 x 486 @ 29.97fps = 27 MB per/sec, or 94 GB per/hr.625 PAL uncompressed;
8 bit @ 720 x 576 @ 25fps = 20 MB per/sec, or 70 GB per/hr.
10 bit @ 720 x 576 @ 25fps = 26 MB per/sec, or 93 GB per/hr.720p HDTV uncompressed;
8 bit @ 1280 x 720 @ 59.94field = 105 MB per/sec, or 370 GB per/hr.
10 bit @ 1280 x 720 @ 59.94field = 140 MB per/sec, or 494 GB per/hr.1080i and 1080p HDTV uncompressed;
8 bit @ 1920 x 1080 @ 24fps = 95 MB per/sec, or 334 GB per/hr.
10 bit @ 1920 x 1080 @ 24fps = 127 MB per/sec, or 445 GB per/hr.8 bit @ 1920 x 1080 @ 25fps = 99 MB per/sec, or 348 GB per/hr.
10 bit @ 1920 x 1080 @ 25fps = 132 MB per/sec, or 463 GB per/hr.8 bit @ 1920 x 1080 @ 29.97fps = 119 MB per/sec, or 417 GB per/hr.
10 bit @ 1920 x 1080 @ 29.97fps = 158 MB per/sec, or 556 GB per/hr.1080i and 1080p HDTV RGB (4:4:4) uncompressed;
10 bit @ 1280 x 720p @ 60fps = 211 per/sec, or 742 GB per/hr.
10 bit @ 1920 x 1080 @ 24PsF = 190 per/sec, or 667 GB per/hr.
10 bit @ 1920 x 1080 @ 50i = 198 per/sec, or 695 GB per/hr.
10 bit @ 1920 x 1080 @ 60i = 237 per/sec, or 834 GB per/hr. -
Pure stubborness would be my guess “We designed a one button mouse and they’re going to like it!”
Ed[Bob] “Now why didn’t Apple introduce this mouse say, 5 years ago?”
-
Walter’s right. The problem I’ve had occasionally though, with directing clients to the latest updates, is that some clients are corporations with IT departments blocking *any* updating of *anything* on company computers. Depending on the client, I send them a WMV and a QT, or in really bad cases, an MPEG-1. I’m waiting for the new Flash 8 to become ubiquitous so I can use that too. The quality is supposedly better than WM9 and a much smaller file. Of course, by the time everyone has Flash 8 video playback capability, Microsoft will have the newest greatest WM version too. 🙂
Ed[Tim Vaughan] “It’s not so much that the codec frustrated us; it is more the fact that we had sent out a few compressed movies to clients and heard back from everyone of them they couldn’t view it and work on it. (they were trying to post the projects on their websites, as well as encode to the formats of their choice) The main problem is that I assumed (and I admit my mistake) that 7 would be backward compatible with 6 without researching. Sometimes you just expect things to work, and get a bit ahead of yourself. Again, my mistake. ;)”
-
Maxtor’s a viable alternative now. The warranty and performance of the MaxLineIII (and the 3 year warranty DiamondMaxIII) is better than Seagate or Hitachi. Check out the reviews for any drive on storagereview.com, they compare a number of drives to the one they’re reviewing, or barefeats.com. The Maxtor line is always the best performing drive or in a tie with the Hitachis. Seagates and especially Western Digital lag far behind.
Ed[Shane Ross] “Seagate or Hitachi. 7200 RPM. Format them Mac OS Extended after you install them.
“ -
More info! What happens when you try? Is the option greyed out? Do you have the option, and select it, but nothing is digitized? More info.
Ed -
That may be due to the data rate you set. Keep it at a maximum of 6. That’s all I can think of without more info.
Ed