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#1 |
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Kasper's Automated Slave
Join Date: Nov 1997
Posts: 6,165
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iTunes HD videos low bitrate, include iPod-ready versions
Those expecting Blu-ray level video from Apple's new HD TV shows may be significantly disappointed -- though buyers will find a surprise in the form of a smaller version for their iPhones and iPods.
While Apple's announcement on Tuesday that it would start offering TV in 720p high-definition directly through iTunes has been hailed as a significant move towards better-quality video through the company's online store, Gizmodo today reminded would-be viewers not to expect a direct replacement for Blu-ray discs or even some purely digital formats. A standard 720p file downloaded either through iTunes or an Apple TV consumes about 4Mbps of data, or just a tenth the total bit transfer rate of the optical format and a fifth of the nearly 20Mbps for over-the-air HDTV; even Xbox Video Marketplace video affords more, at 6.8Mbps. Some of this shrink in file size can be attributed to features left out of Apple's encoding, such as the 1080p resolution or 7.1-channel surround audio, but much of it is attributed to compression that can degrade the final picture quality significantly from the reference image. Such reductions can often lead to smearing in videos, particularly in fast-moving scenes where the bandwidth allowed to the video isn't enough to keep up with the changes necessary for the picture. The bitrate isn't an automatic gauge of image quality, however. As discussed in AppleInsider's Apple TV quality comparisons, video format choices and other factors can actually result in supposedly higher-bitrate cable TV sources faring worse than Apple's H.264 videos, which are more efficient at compressing data than the MPEG-2 format used by some TV providers and older Blu-ray titles. Apple also isn't seen as having much choice in the matter due to the nature of Internet technology. An HD TV show on iTunes can be nearly three times the size of its standard-definition equivalent and downloads slowly enough on most American connections that it may be difficult to start watching in real-time, with an example show taking 40 minutes -- or nearly its full duration -- to finish downloading. Higher-quality video would both be impractical for some connections and quickly fill up hard drives. As a compromise, Apple is known to be offering portability, something that most Blu-ray or cable video-on-demand services can't offer themselves. Ars Technica notes that Apple has quietly made sure that all HD downloads from iTunes also include an SD version as part of the purchase. The lower resolution chews more disk space but also guarantees that buyers will have a version of their TV show choice already formatted for iPhones and video-capable iPods; none of these currently have the performance, the displays, or the capacity to practically support HD playback. Bundling a second copy of a title also puts Apple slightly ahead of Blu-ray in HD TV bundles: while a handful of Blu-ray and DVD movies now offer an iTunes Digital Copy that achieves a similar effect to Apple's new venture, most TV series collections still largely include just the original video and can be difficult or impossible to copy. |
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#2 |
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Registered User
Join Date: Jan 2005
Posts: 261
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Not enough people have the bandwidth yet to justify full 1080P. Not even the FIOS people have that kind of bandwidth to burn.
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#3 |
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Join Date: Sep 2007
Posts: 144
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#4 | |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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For comparison, my local cable provider uses Scientific Atlanta boxes, uses MPEG-2, and offers between 16-19Mbps for the average HD channel.
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#5 | |
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Registered User
Join Date: Oct 2006
Location: Greenville, SC
Posts: 854
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#6 | ||
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Registered User
Join Date: May 2003
Posts: 862
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![]() Internet-based High Definition content is a joke with today's bandwidth. I downloaded the free pilot episode of Monk last night; despite taking three times longer to download and sync with my Apple TV than it took to watch, the quality was below that of an upconverted standard definition DVD. |
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#7 |
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Registered User
Join Date: Apr 2002
Location: No GPS signal.
Posts: 1,169
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What res are HD shows? My old SD episodes of Battlestar Galactica were 640x360 (not x480 because they are widescreen). I downloaded an episode today and it was 853x480, which looked good and exceeds DVD, but I would have thought you'd need at least 720 to call it HD. Did I get the HD version, or are they just using higher quality for SD now?
And where would the second version show up, if I got both HD and SD? I only see the one listed in my Library. TIA
nagromme
Would you like a treatment? |
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#8 | |
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Registered User
Join Date: May 2003
Posts: 862
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#9 |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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edit: Pipped by Cory.
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#10 |
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Registered User
Join Date: Feb 2008
Posts: 1,415
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Notice how this entire controversy is based on the lower bit rate and that they "attribute" to this and that? i.e. - they have no real idea of why the bit rate is lower and no hard information on whether the picture quality is lessened because of it. What matters is how it looks to the end user. If no noticeable pixelation occurs and the signal is comparable side by side to a higher bit-rate HD, what does it matter if Apple puts the signal together a different way?
Everyone who knows anything about the tech press knows that Gizmodo is just a bunch of disagreeable twenty-something tards that find fault with everything they look at and generate huge controversies out of virtually nothing. They have been guilty over and over again of "crying wolf" when it's simply not justified. Then the apologise later and laugh all the way to the bank. Their "analysis" is probably worthless and certainly not worth considering until someone else who actually knows what they are talking about chimes in with similar results. The day I trust someone who reviews tech products based on how it makes them want to jerk off (yes, they have done this) is the day I give up on tech journalism in general. |
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#11 |
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Registered User
Join Date: Nov 2006
Location: Lost somewhere in the deep south.
Posts: 170
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I would love to comment on the quality of the Hd. downloads but unfortunately I can't. Itunes downloads both the Hd. version and the standard version of the show. Unfortunately itunes can not find the Hd version.
Fat drunk and stupid may not be the best way to go through life but it is my preferred modus operandi.
You are coming to a sad realization...cancel or allow? |
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#12 | |
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Registered User
Join Date: May 2003
Posts: 862
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Quote:
Are you for real?The difference in quality is very, very apparent. GIzmodo is not blowing things out of proportion. An upconverted standard definition DVD looks better than what Apple passes off has HD. Gizmodo clearly state that there is noticeable pixelation, and even back their claims with photo proof. |
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#13 | |||
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Registered User
Join Date: Oct 2006
Posts: 474
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Quote:
If iTunes had been offering HD TV a few months ago, it (and an AppleTV) may have been a potential cable replacement. But at $3 an episode, keeping cable could quickly become a cheaper alternative. And comparing prices, it's not much cheaper buying a season from iTunes than it is to get it on Blu-Ray (example, Heroes Season 1 is $64.95 from iTunes or $69.99 for Blu-Ray from Amazon.com). Quote:
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#14 |
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Registered User
Join Date: Jan 2004
Posts: 123
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I downloaded and watched a couple of episodes of Californication in HD yesterday. (btw:
).I didn't have *any* problem with the quality of the image in regards to the bitrate. There were no noticeable degradations to the image in fast-moving scenes as this article warns of. It's true that it doesn't have the freaky sharp look of Blue-Ray played on a top-of-the-line HD television, but it certainly isn't "smeared" or flawed in any other noticeable way. Watching on my 30" Apple Cinema Display, the real problem is the resolution of the image is so small that to fill the screen I have to watch it at double size. Obviously this makes the image considerably less crisp to the naked eye. The good news is that even at that magnification the image looks very good, it's very watchable (unlike the SD downloads from the iTunes Store, which look terrible when blown up to full screen on the 30"). Any softness comes across as more cinematic than as digital degradation. In the end, with the current format using 1 GB per 30 minutes of television, I would be less likely, not more likely, to purchase shows if they took up exponentially more hard drive space. Even if I bought a 1 TB hard drive just for my iTunes library I'd be concerned about running out of space if the HD downloads were 5 to 10 times as large. |
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#15 | |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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#16 | |||||
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Registered User
Join Date: Jan 2005
Location: Brooklyn, NY
Posts: 5,257
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#17 |
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Registered User
Join Date: Oct 2007
Posts: 6,200
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Am I missing something here- did anybody actually really expect these HD downloads to rival Blu-ray? The good thing here is that we are finally getting a download worth watching on our HDTVs - that is convenient and you can finally own. And 2 versions at that! Everybody needs a realiity check and just get a grip- this is fantastic. No physical media to clog up shelf space- excellent. And we're talking TV shows here not cinematic epics like The Lord of the Rings.
Last edited by teckstud; 09-10-2008 at 09:57 PM.. |
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#18 | |
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Registered User
Join Date: Jun 2005
Posts: 119
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Quote:
I work in television on HD sports programming. A two-hour show can approach 1TB in size and it is amazing to watch on a $20,000 HD reference monitor, Apple compresses that down to 4GB. What you see when you watch material on one of our "HD" networks is a joke. What you are downloading from iTunes isn't HD anything. It's the same size as an HD frame, but it's compressed all to hell. |
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#19 | |
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Registered User
Join Date: Oct 2007
Posts: 6,200
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#20 | |
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Registered User
Join Date: Jan 2007
Posts: 855
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I'm not saying Apple's HD is of superior quality, I haven't tried it yet (letting all the rest of you complete your beta testing of iTunes 8 before I install it ), but there are a lot of variables that need to be taken into consideration. But in general, I've found that Apple does a very good job of maximizing image quality within the bandwidth limitations. |
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#21 |
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Registered User
Join Date: Jun 2005
Posts: 119
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#22 |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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Digital downloads were successful when Apple was pushing 320x240 music videos. YouTube is successful. SDTV was successful. DVD was successful. We always want more and better and companies will give the customer what they want if it means getting their business, but if there is no competition in your market then there is no reason for them to improve.
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#23 | |
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Join Date: Oct 2007
Posts: 6,200
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Quote:
I agree totally and how nice to be surprised by this. Whoever at Apple came up with this deserves accolades. |
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#24 | |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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Quote:
News as of today shows Vudu doing that exact thing. I highly doubt the bitrate will match BR, but for the convenience it doesn't have to, but one thing is for certain it'll be better than iTS and if gains traction Apple will up their quality. • Vudu Testing Blu-ray Quality "HDX" Flicks
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#25 | |
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Join Date: Oct 2007
Posts: 6,200
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Quote:
Of course all technology improves eventually so I don't think that's what he means. And Apple will not be able to compete with BR- because of all the extras BR offers- so forget that. BTW Blu- ray should get a lot of traction this holiday when the players go below $300. |
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#26 |
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Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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I'll certainly be buying a couple for family this year. At least one will be as a PS3.
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#27 |
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Join Date: May 2005
Posts: 8,461
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Apple really, REALLY needs to start looking at digital downloads direct to iPod Touch/iPhone from a kiosk. The whole bandwidth thing is an intractable problem for ALL providers of entertainment over "underperforming" lines. This is a problem that no one has been able to solve even with better compression.
"The natural progress of things is for liberty to yield, and government to gain ground."
—Thomas Jefferson Proud AAPL stock owner. |
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#28 |
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Registered User
Join Date: May 2003
Posts: 862
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I think the world should just stick to Blu-Ray for another 5-10 years utnil the internet actually allows for "HD" video that doesn't look worse than a DVD.
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#29 | |
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Join Date: Jan 2005
Location: Brooklyn, NY
Posts: 5,257
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#30 |
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Join Date: Oct 2007
Posts: 6,200
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#31 | |
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Join Date: Jan 2005
Location: Brooklyn, NY
Posts: 5,257
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Quote:
I think Blu-ray has 5 years at the most. Compression and bandwidth will both improve and will get to a point where the image is good enough for the convenience of downloading from your couch without depending on physical media. |
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#32 | ||
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Registered User
Join Date: May 2003
Posts: 862
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Quote:
Moreso, what'd you buy that fancy 1080p HDTV for ![]() Quote:
I think the instant gratification of downloads is offset by the time and money it takes to safeguard all of that diskless data. It'd be awfully upsetting to lose hundreds or even thousands of dollars worth of movies and tv shows. If Apple kept track of your purchases and allowed you to redownload them in the event of data loss, this would of course become a non-issue. |
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#33 | |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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Quote:
As for your archiving, people have the same reservations about all the VHS media they accumulated. Same thing with cassette to CD. You can still keep your current physical libraries and have a digital one too. Oh, but make sure you properly backup your content ![]() Speaking of, Apple needs their own RAIDed home server or RAIDed Time Capsule. Windows Home Server is pretty damn nice for an implementation of Windows. The fan on my HP Home Server is louder than I'd like, but beyond that I have no complaints.
Do your part to clean up AppleInsider forums: User CP » Edit Ignore List » Teckstud
Last edited by solipsism; 09-10-2008 at 11:18 PM.. |
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#34 | ||
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Location: Brooklyn, NY
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#35 | |
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Location: Brooklyn, NY
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#36 | ||||
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Global Moderator
Join Date: Jun 2004
Location: .US
Posts: 9,127
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I think it's a fine bonus, because of the above fact. Not only that, even if iPhone can play it, I don't want a file on it that's so much larger than it really needs to be that I'm storing 1+ GB of data on the device that would make no absolutely difference in how good it looks on the portable display. It's nice to have one purchase that covers a broad range of devices rather than one purchase that covers just a couple devices. It's too bad that there is no consumer-accessible high quality wavelet codec, this would be unnecessary. To copy it to an iPod, all that would need to be would be to just copy certain chunks of the file. With Apple's introduction of TV series in HD, their HD catalog might be getting close enough in title count with Blu-Ray, and there's probably not so much authoring and up-front mastering cost as with Blu-Ray. Then there's the convenience factor, getting an episode shortly after it airs vs. waiting 6+ months for the BR set. So there's a chance that Apple can actually get some traction if they can maintain a certain level of quality, even if it's not going to be the same as BR. Last edited by JeffDM; 09-11-2008 at 12:14 AM.. |
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#37 |
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Registered User
Join Date: Apr 2006
Location: The Ansible
Posts: 11,885
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If iTS's 128Kbps audio with DRM can trounce CDs with all the extras that come with it because of its overwhelming convenience, then I think that Apple and other online distributors have an excellent chance. Especially since DRM is now a part of both video formats.
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#38 | |
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Join Date: Mar 2004
Location: Australia
Posts: 969
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Quote:
1) BluRay (or HDDVD) are the best 2) AppleTV HD next best 3) HD mpeg4 next (on cable or satellite) 4) HD mpeg2 (via FTA or cable) 5) DVD 6) AppleTV SD etc etc That would agree with my experience too. I haven't used MS Xbox. Also it's interesting that there are now proponents of a new compression scheme which deliberately downgrades the detail of fast moving scenes - to avoid pixelation and actually decrease the bandwidth of those scenes (in contrast to the regular increase in bandwidth). They focus their efforts on slow scenes where the viewer can actually see the quality. .... This type of compression would be very bad by Gizmodo's tests (and the studies I've read) since they take fast moving scenes and pause them, analysing the quality frame by frame. I guess what I'm saying is, I'd like to see viewer reactions to various qualities. I know for me that regardless of compression 720p looks no different than 1080p - and 4Mbps 720p will be better quality than 6Mbps 1080p. |
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#39 | |
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Registered User
Join Date: Aug 2008
Posts: 157
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#40 | ||
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Global Moderator
Join Date: Jun 2004
Location: .US
Posts: 9,127
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Last edited by JeffDM; 09-11-2008 at 12:37 AM.. |
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