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| Guyana-The Lost World (1997) [00MW-0016] Hi-Vision https://forum.lddb.com/viewtopic.php?f=41&t=5677 |
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| Author: | substance [ 12 Oct 2015, 11:46 ] |
| Post subject: | Guyana-The Lost World (1997) [00MW-0016] Hi-Vision |
Guyana - The Lost World [00MW-0016] is one of the last Muse encoded Hi-Vision LDs, printed by Sony in the second half of 1997. It's a CLV disc with type B 2.0 audio. Content wise, there is not much to discuss. It's approximately 25 minutes of nature scenery with Japanese commentary. I would say half the content is wide and distant shots of forests and mountains, the other half is closer shots of some frogs and plantations. The picture quality is not breath taking like the Sony test disc material. Especially distant shots feel barely HD. I think the luma resolution is a tad under current broadcast HD but the chroma resolution is likr DVD at best. Like NTSC LDs, the greens suffer most. I don't know if Hi-Vision LDs employ rec.709 color scheme but it certainly looks in the vicinity of rec.601 with HD luma resolution. On the close up shots, things get significantly better, especially when the screen isn't busy. Close ups shots of frogs and flowers are against dark brown/black mud in the background. The plantations filmed on the foreground gets very nice sharpness and colors really pop like rec.709 should. There was a yellow/black frog, it was like a newely waxed Lamborghini. Overall, the video noise is absent from the picture in all shots. There isn't any compression artifacts. Camera pans are very slow and the only thing really moving fast was the running water on the mountains. Even those blended very well with stationary parts of the video. I would normally expect them to be softer due to Muse compression for motion. The audio is on type B 2.0 channels. It's mostly ambiance sound and relaxing music. The fidelity of this soundtrack is high and it's obvious. The sound field is engaging and the bass is full. The surround channels were utilized almost through the entirety of the feature. I used Dolby ProLogic 2x btw. You could hear the wind, birds flying and orher forestly sounds all around you. The soundtrack overall was very well mastered indeed. Packaging is a gatefold jacket with left side obi, very thick carton. The only disc is protected by an elephant condom inside. Equipment: Pioneer Elite Kuro Pro-141FD - 60" Plasma Monitor McIntosh Mx-121 AV Preamp/Processor McIntosh Mc207 7ch Power Amp Pass Labs XVR1 Active Crossover Meridian 519 RF Demodulator Martin Logan Theos L/R Speakers Martin Logan Stage X Center Martin Logan Descent I - two subwoofers Martin Logan Motion 4 Side and Rears Lumagen Radiance Pro 4449 Ultra HD Video Processor Lumagen Radiance 2144 Video Processor Pioneer HLD-X0 Reference Laserdisc Player Sony MSC-4000 Muse Decoder |
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| Author: | publius [ 12 Oct 2015, 18:06 ] |
| Post subject: | Re: Guyana-The Lost World (1997) [00MW-0016] Hi-Vision |
MUSE employs a specialized chrominance encoding different from either ITU-R BT.601 or BT.709. The processing method uses "quasi-constant-luminance", which linearizes the input signals ; this results in a significant reduction of cross-talk between the chrominance & luminance channels, resulting in improved subjective picture quality with reduced chrominance bandwidth. There are, however, a couple of provisos to be observed. The first is that it works best with GBR inputs from the camera (or YPbPr with equal bandwidth, to allow clean dematrixing, linearization, & rematrixing). The second is that chrominance levels are boosted, then clipped, in the encoder, which limits the fidelity of reproduction of highly-saturated colours such as are encountered in test signals, but rarely in actual scenes. |
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| Author: | substance [ 12 Oct 2015, 19:18 ] |
| Post subject: | Re: Guyana-The Lost World (1997) [00MW-0016] Hi-Vision |
I am not seeing the correct colors then. Is there any way to calibrate for Muse? Test disc doesn't have the necessary patterns. What color space should I use? Is there any std clr space close enough to Muse? I have been using bt.709 but the colors are dull. |
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| Author: | publius [ 12 Oct 2015, 23:05 ] |
| Post subject: | Re: Guyana-The Lost World (1997) [00MW-0016] Hi-Vision |
The MUSE matrix is defined only in the linear domain. I would like to think that, after the decoding process, the BT.709 matrix is used to transform gamma-corrected GBR to YPbPr for output, but I cannot be entirely certain. The limiting of the maximum chrominance levels (in order to reproduce the more-commonly-encountered lower levels better) may be part of what you are seeing. If you have a Sony MSC-3000/4000, I suggest you experiment with the "Saturated" setting in the MUSE output menu. Or if you have a display which can accept GBR input, you may get better results that way. |
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