Zenith DVB318 Upscaling DVD player info thread - Page 166 - AVS Forum
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post #4951 of 4956 Old 02-17-2006, 09:07 AM
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Quote:
Originally Posted by Drnick5
well I've tried my zenith on both 720P and 1080I and I still notice quite a lot of microblocking. your saying this differs from set to set? do many upconvert DVD players use the Faroudja chip? other thing, is 1080i a better format than 720p? I've read things on-line saying that 720p (because of it's progressive scanning) is better than 1080i (and is why sports broadcast in 720p and not 1080i) the site said that 720p refreshes at 1/60th of a second and 1080i refreshes at 1/30th (I believe thats what this said, I'll try and dig up teh site to be sure) any suggestions?

-Nick
In general 720p is preferable with a 720p display and 1080i preferable with a 1080i display. In the case of the DVB318, I prefer 1080i on both my 720p and 1080i displays. Quite a few players use the Faroudja chip but there are plenty available that don't. As far as inexpensive players go, the players using the Zoran Vaddis chips such as the Samsung DVD-HD950 are pretty good, although mine just started having problems today after only 6 months of heavy use and I will try to get it repaired under warranty. My DVB318 still runs great although it doesn't get nearly the use the HD950 was getting.

Chris
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post #4952 of 4956 Old 02-17-2006, 10:29 AM
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Quote:
Originally Posted by Drnick5
well I've tried my zenith on both 720P and 1080I and I still notice quite a lot of microblocking. your saying this differs from set to set? do many upconvert DVD players use the Faroudja chip? other thing, is 1080i a better format than 720p? I've read things on-line saying that 720p (because of it's progressive scanning) is better than 1080i (and is why sports broadcast in 720p and not 1080i) the site said that 720p refreshes at 1/60th of a second and 1080i refreshes at 1/30th (I believe thats what this said, I'll try and dig up teh site to be sure) any suggestions?

-Nick
The 720p / 1080i debate still is on-going as to which is better. 1080 provides more data in it's full frame, while 720 has more info on the screen at one time & in shorter time-frame. 1080i refreshes 540 lines on the screen in the 1st 1/60th of a second and then 540 then 2nd 1/60th with only 540 on the screen at a time. It takes 1/30th of a second for a full frame. 720p paints all 720 lines in 1/60th of a second so in the same time, it's giving 2 frames to 1080i's 1 frame. The issue is, 1080i 'full frame' is 360 lines more data than 720p, but it just takes longer. So, it's hard to say which is better. The networks that concentrate on sports feel 720p is better while other networks feel 1080i is better for content with less motion. Hard to say...it's all opinion.

It's usually better to give your device the native input it displays. That said, the DVB318 has some issues with 720p and it has fewer errors and other problems when set to 1080i. On my Z4 720p projector, just like Chris found with his displays, setting the DVB318 to 1080i looked better than 720p so it's not always clear cut. Honestly, at this point, if I was buying a player, I'd get an Oppo as it is near perfect in testing for 720p or 1080i and no pixel cropping like the DVB318 suffers from. Still has slight macroblocking issue as the majority of Faroudja based upconvert players do, although not as bad as many do. For the price, it is a great deal. Faroudja is still great but has that trade-off. Macroblocking will differ per display and per settings. I'm using my HTPC for the most part anyway, so the DVB318 will do as a backup.
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post #4953 of 4956 Old 03-19-2006, 06:44 PM
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Which do you think is a better player? The LG 531 or the Zenith DVB318? I know they are similar and LG/Zenith have merged but I get this feeling that there is still a difference between the two (aside from the LG's ability to play DivX) regarding pq and performance.
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post #4954 of 4956 Old 03-24-2006, 05:54 AM
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If you can get your hands on a DVB318, buy it!!! I do home theater installs every day and in my opinion this is the hands down best DVD player on the market (too bad its been discontinued). The Faroudja processing and upconversion via component make it a steal at anything under $200.

The LG LDA-511 is also good, but you have to turn off HDCP and Macrovision to allow the player to upconvert all DVDs over component. There is a remote hack available for this, but the picture is still not as crisp and sharp as the DVB311.
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post #4955 of 4956 Old 03-24-2006, 07:02 AM
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I have both a 318 and a 418 (updated with the latest 531 firmware so it too upconverts via component). I am hard pressed to see a difference between the two players. this is on real material and test patterns (yes the players were calibrated to the display andthe display is calibrated to D65 across the range of IRE's).

I would factor cost in, if you care about that. I picked up a refurb. 418 for $80 shipped on ebay. They can be had for less if you you are patient. If you search closed auctions for even used 318's they go for around $150.

Regarding the hack to allow component upconversion. It's the sort of hack you do once and then never again. For component upconversion you don't need to do anything about HDCP. Just turning off macrovision is sufficient to get component upconversion.

Best,
jeff
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post #4956 of 4956 Old 03-24-2006, 09:45 AM
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I bought a 318 here in S Florida at BrandsMart for $98. They still have them for sale if you are down here. It is a very good machine and does upconvert through component and DVI.
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