With Macbook pro 17'', you can contemplate full HD.
Saturday, June 13, 2009
Blu-ray vs HD DVD
| Companies listed as Members, Associate Members, or Contributors (may include duplicates and/or subsidiaries) | |
| Blu-Ray | HD DVD |
| 1K Studios, LLC Acer Incorporated Adobe Systems Advanced Micro Devices, Inc. Allion Test Labs, Inc. Almedio Inc. Alpine Electronics Inc. Alticast Aplix Corporation ArcSoft, Inc. Arima Devices Corporation ashampoo GmbH & Co. KG ASV Corp. AudioDev AB Avid Development GmbH B&W Group B.H.A. Corporation BASF AG BluFocus Inc. Bose Corporation Brickbox Digital Media Broadcom Corporation Canon Inc. Cheertek Inc. China Hualu Group Co., Ltd. Cinram Manufacturing Inc. CMC Magnetics Corporation Corel Corporation Cryptography Research Inc. Custom Technology Inc. CustomFlix Labs, Inc. CyberLink Corp. D&M holdings, Inc. D-Box Technologies Inc. Daewoo Electronics Corporation Daikin Industries, Ltd. DATARIUS Technologies GmbH Daxon Technology Inc. DCA Inc. Deluxe Media Services Inc. Dolby Laboratories Inc. Dr. Schwab Inspection Technology GmbH Dreamer Co., Ltd. DTS, Inc. Eclipse Data Technologies Elpida Memory, Inc. Esmertec Expert Magnetics Corp. Falcon Technologies International FUJIFILM Corporation Fujitsu Ltd. Fujitsu Ten Ltd. Funai Electric Co., Ltd. GalleryPlayer Media Networks Gear Software General Members Gibson Guitar Corp. Global Machinery Co., Ltd. Gowell Electronic Limited Hie Electronics, Inc. Hoei Sangyo Co., Ltd Horizon Semiconductor. IMAGICA Corp. Imation Corp. Info Source Multi Media Ltd. INFODISC Technology Co., Ltd. Infomedia Inc. Intersil Corporation Iwatsu Test Instruments Kenwood Corporation Kobe Steel Co. Ltd. Konica Minolta Opto Inc. Lauda Co. Ltd. Lead Data Inc. LEADER ELECTRONICS CORP Lenovo LINTEC Corporation Lionsgate Entertainment LITE-ON IT Corporation Macrovision Corp. Magnum Semiconductor, Inc. MainConcept AG MediaTek Inc. Meridian Audio Ltd. MIT Technology Co., Ltd. Mitsubishi Kagaku Media Co.Ltd. Mitsui Chemicals Inc. Mitsumi Electric Co., Ltd. Monster Cable Products Moser Baer India Limited MoSys Incorporated Must Technology Co., Ltd. MX Production Services NEC Electronics Corporation NEC Personal Products Ltd. Nero Netflix Inc. Newtech Infosystems Inc. NexWave Solutions NHK Technical Services, Inc. Nichia Corporation Nikkatsu Corporation NTT Electronics Corporation nVidia Corporation OC Oerlikon Balzer AG Omnibus Japan Inc. Onkyo Corporation Online Media Technologies Ltd. Ono Sokki Co., Ltd. OPT Corporation Optodisc Technology Corporation Origin Electric Co., Ltd. Osmosys SA Pico House Pixela Corporation Plannet Associates PoINT Software & Systems GmbH Pony Canyon Enterprise Primera Technology, Inc. Prodisc Technology Inc. Pulstec Industrial Co., Ltd. Q-TEC, Inc. Quanta Storage Inc. Quantized Systems Realtek Semiconductors Ricoh Co., Ltd. Rimage Corporation Ritek Corporation Sanyo Electric Co., Ltd. ShibaSoku Co. Ltd. Sigma Designs Inc. Silicon Integrated Systems Corporation Singulus Technologies Sonic Solutions Sony BMG Music Entertainment ST Microelectronics Sunext Taiyo Yuden Co., Ltd., Targray Technology International Inc. TEAC Corporation Teijin Chemicals Ltd. Texas Instruments, Inc. The Cannery THX Ltd. Toei Video Company Ltd. Toho Company, Ltd. Toppan Printing Co., Ltd. TOPTICA Photonics AG Trailer Park UmeDisc Ltd. Universal Music Group, Inc. Victor Company of Japan, Ltd. VideACE Inc. Visionare Corporation Yamaha Corporation Yokogawa Electric Corporation Zentek Technology Japan, Inc. ZOOtech Ltd. Zoran Corporation | Acer Inc. ACSES Co.,Ltd. Ad Seeds Co.,Ltd Allion Test Labs, Inc. Almedio Inc. Alpine Electronics, Inc. Altech Ads Co. ArcSoft, Inc AudioDev AB B.H.A Corporation Bandai Visual Co. BEKO Elektronik Broadcom Corporation Canon Inc. CDN Corporation Clariant Japan CMC Magnetics Corporation Corel Corporation CyberLink Corp D&M Holdings Inc. Daikin Industries Daiko.co,ltd. Daxon Technology Inc. Dedicated Devices, Inc. DigiOn, Inc. Digital Site Corporation Disc Labo Corp. Dolby Labs, Japan Dr. Schwab Inspection Technology GmbH DT Japan, Inc. DTS, Inc. Ebistrade, Inc. Entertainment Network Inc. Exa International Expert Magnetics Corp. Finepack . Co.,LTD Flag,Inc. Fuji Photo Film Co. Fuji Plastic Co. Fuji Seiki Co. Fujitsu Limited. Funai Electric Co. Gear Software, Inc Gibson Musical Instruments GM Records Hamamatsu Metrix co.,ltd. Hitachi Corporation Hitachi Maxell, Ltd. Hoei Sangyo Co. IDE-AVA IMAGICA Corp. Imation Corp Info Source Multi Media Korea Ltd. Infodisc Technology Co. Intel Corporation Itri Jp Co., Ltd Justsystem Corporation Kadokawa Holdings, Inc. Kaleidescape, Inc. Kenwood Corporation Kinyosha Printing Co. Konica Minolta Opto, Inc. Lenovo Japan McRay Corporation Megan Media Holdings Bhd Microsoft Corporation Mitomo Co., Ltd Mitsubishi Kagaku Media Co., Ltd. / Verbatim Mitsui Chemicals, Inc. Moser Baer India Ltd MPO INTERNATIONAL Nero AG NetBlender, Inc. NHK Technical Services, INC. Nichia Corporation Nihonvtr Inc. Nikkatsu Corporation nixbu Entertainment GmbH & Co. KG Oerlikon Japan Co., Ltd. Omnibus Japan Onken Corporation Onkyo Corporation Online Media Technologies Ltd. Origin Electric Co. Outpost FX (AB) International Paramount Home Entertainment Pegasys, Inc. Pico House Co.,Ltd Pixela Corporation Plasmon OMS Sarl Pony Canyon Inc. PonyCanyon Enterprise INC. Proboxx, Inc Prodisc Technology Inc. Protron Digital Inc. Pryaid Records Inc. Pulstec Industrial Co. Q-Tec,Inc. Query inc Ricoh Co. Ritek Corporation Sanken Media Product Co., Ltd. Shibaura Mechatronics Corporation Sonic Solutions Sonopress GmbH Sumitomo Heavy Industries. Ltd Super Vision, Inc. Taiyo Yuden Co. Teac Corporation Teijin Chemicals Ltd. Toei Video Co. Toemi Media Solutions Limited Toho Company, Limited. tokyo laboratory ltd. Toppan Printing Co. Toptica Photonics AG Toyo Recording Co. Transmix Co. Trendy Corporation U-Tech Media Corp. Ulead Systems, Inc. Universal Pictures Vap Inc. Visionare Corporation Warner Home Video Inc. |
Blu-ray vs HD DVD: State of the Division
Well, as far as HD DVD vs. Blu-ray goes, it looks like we've pretty much passed the point of no return now; with each passing day it seems less and less likely that a compromise will be reached on a next-gen format. The ongoing peace talks between the two camps, which have been on-again, off-again for months now, seem to have finally dissolved. It's disappointing, but however you feel about the fact that the HD DVD and Blu-ray factions squandered countless chances to make it right and come together, it looks like in just a few short months they're going to be duking it out mano a mano right in our livingrooms. There may not be a lot we can do to fight back - apart from refusing to adopt either format out of sheer spite of their pigheadedness - but no matter what we might as well at least arm ourselves with the knowledge necessary to understand the nature of the situation at hand.
Here's the background:
Philips's development of the Laserdisc in 1969 yielded many of the technologies Sony carried over and adopted when they eventually partnered with way back in '79 Philips to create a little something called the CD. Both companies were hard at work together once again in the early 1990s on a new high-density disc called the MultiMedia Compact Disc (MMCD -- original name, guys), but their format was more or less abandoned in favor of Toshiba's competing Super Density Disc (SD), which had the vast majority of backers at the time, such as Hitachi, Matsushita (Panasonic), Mitsubishi, Pioneer, Thomson, and Time Warner.
The two factions cut a deal, brokered by IBM president Lou Gerstner, on a new format: DVD. Toshiba wound up on top after the dust settled in 1995/1996, and Sony and Philips, who weren't cut in on the standard (and royalties) nearly as much as they'd have liked, immediately started work on a next gen system. The Professional Disc for DATA (aka PDD or ProDATA), which was based on an optical disc system Sony had already been developing in the side, would eventually become the Blu-ray disc. Toshiba, not to be outdone by its rivals Sony and Philips, also started work on a next gen system, the Advanced Optical Disc, which eventually evolved into the HD DVD. But after thirty-five years of optical audio/video disc development we're back where we were years ago: two money-grubbing would-be standards bearers swiping at one another, threatening to wreak havoc on the consumer electronics industry. Apparently history really does repeat itself.
So here's the technical nitty gritty before we drop the graphs n' charts on you. Both Blu-ray and HD DVD use the same kind of 405nm wavelength blue-violet laser, but their optics differ in two ways. Since the Blu-ray disc has a tighter track pitch (the single thread of data that spirals from the inside of the disc all the way out -- think: grooves on a 12-inch vinyl single vs. an Elvis Costello full-length album with 40 songs), it can hold more pits -- information -- on the same size disc as HD DVD even with a laser of the same wavelength.
The differing track pitch of the Blu-ray disc makes its pickup apertures differ, however -- 0.65 for HD DVD vs. 0.85 for Blu-ray -- thus also making the two pickups technically incompatible despite using the same type of lasers. HD DVD discs also have a different surface layer (the clear plastic layer on the surface of the data -- the part that collects all your fingerprints and scratches) from Blu-ray discs. HD DVD use a 0.6 mm-thick surface layer, the same as DVD, while Blu-ray has a much smaller 0.1mm layer, which enables the laser to focus at that 0.85 aperture.
Herein lies the issues associated with the higher cost of Blu-ray discs. This thinner surface layer is what makes the discs cost more; because Blu-ray discs do not share the same surface layer thickness of DVDs, costly production facilities must be modified or replaced in order to produce the discs. A special hard coating (Durabis) must also be applied to Blu-ray discs to ensure they're sufficiently resilient to protect the data that's a mere 0.1mm beneath the surface -- this also drives the cost up. The added benefit of keeping the data layer closer to the surface, however, is more room for extra layers, and way more potential data than HD DVD.
Still with us? No? Blu-ray discs are more expensive, but hold more data -- there, that's all.
So now that you know why Blu-ray discs cost more and why Sony / Philips and Toshiba are all harshing on one another so much, we can get to the really important stuff: the numbers and who's supporting who.
Update (2.15.2008): Obviously a lot's gone down in the past couple of years, specifically with regard to format support. Granted, both Blu and Red have gotten a vast number of bit players to join up as members of their respective consortiums, but content is where it counts, and as of early 2008 HD DVD is officially on the ropes.
| Capacity | |||
| Blu-Ray | HD DVD | ||
| ROM single layer: ROM dual layer: RW single layer: RW dual layer: Highest test: Theoretical limit: | 23.3 / 25GB 46.6 / 50GB 23.3 / 25 / 27GB 46.6 / 50 / 54GB 100GB 200GB | Single layer: Dual layer: - - Highest test: Theoretical limit: | 15GB 30GB - - 45GB 60GB |
| Codecs | |
| Blu-Ray | HD DVD |
| MPEG-2 Microsoft Video Codec 1 (aka VC1, WMV HD, etc.) H.264 / MPEG-4 AVC Dolby Digital AC-3, DTS, linear PCM Optional: Dolby Digital Plus, Dolby TrueHD, DTS HD | MPEG-2 Microsoft Video Codec 1 (aka VC1, WMV HD, etc.) H.264 / MPEG-4 AVC Dolby Digital AC-3, DTS, linear PCM, Dolby Digital EX, Dolby Digital Plus, Dolby TrueHD Optional: DTS HD |
| Security | |
| Blu-Ray | HD DVD |
| Mandatory HDCP encrypted output ROM-Mark watermarking technology BD+ dynamic crypto (physical layer) Advanced Access Content System (AACS) | Mandatory HDCP encrypted output (for HD) Volume identifier (physical layer) Advanced Access Content System (AACS) |
| Movie studio support | |
| Blu-Ray | HD DVD |
| 20th Century Fox Buena Vista Home Entertainment Hollywood Pictures Lions Gate Miramax Entertainment MGM Studios New Line Cinema Sony Pictures Entertainment Touchstone Entertainment The Walt Disney Company Vivendi Universal Games Warner Bros. | Dreamworks Paramount Pictures Universal Studios |
| Major movie rental outlets *Still awaiting final confirmation | |
| Blu-Ray | HD DVD |
| Blockbuster Netflix Movie Gallery / Hollywood Video* | Movie Gallery / Hollywood Video* |
| Nationwide retail and major online support | |
| Blu-Ray | HD DVD |
| Amazon Best Buy Circuit City Costco K-Mart Target (said to be mostly Blu) Wal-Mart | Amazon Circuit City Costco K-Mart Target |
| Format founders | |
| Blu-Ray | HD DVD |
| Sony Corporation Royal Philips Electronics | Toshiba Corporation Hitachi Corporation |
| Companies listed as Members of the Board or Managing Members | |
| Blu-Ray | HD DVD |
| Apple, Inc. Dell, Inc. Hewlett Packard Company Hitachi, Ltd. LG Electronics Inc. Mitsubishi Electric Corporation Panasonic (Matsushita Electric) Pioneer Corporation Royal Philips Electronics Samsung Electronics Co., Ltd. Sharp Corporation Sony Corporation Sun Microsystems TDK Corporation Thomson Twentieth Century Fox Walt Disney Pictures and Television Warner Bros. | Memory-Tech Corporation NEC Corporation Sanyo Electric Co. Toshiba Corporation |
(engadget.com)
Friday, June 12, 2009
Software for download HD torrents
To download torrents, you need setup downloader software.
* On Mac OS:
You can use Transmission, it's good.
Download here
* On Windows:
FlashGet is best.
Download FlashGet here
On next time, i will give you websites to download HD torrents.
* On Mac OS:
You can use Transmission, it's good.
Download here
* On Windows:
FlashGet is best.
Download FlashGet here
On next time, i will give you websites to download HD torrents.
Thursday, June 11, 2009
Softwares for play HD on Mac OS and XP + Vista OS
Softwares for play HD on Mac OS and Vista OS:
On Mac OS:
1/ Quicktime Pro is number one, but you need install Perian code.
2/ VLC is good.
On XP and Vista:
You can download and install KLiteMegaCodecPack.
If you can not find them, please give me your email, i will email to you.
Good luck.
On Mac OS:
1/ Quicktime Pro is number one, but you need install Perian code.
2/ VLC is good.
On XP and Vista:
You can download and install KLiteMegaCodecPack.
If you can not find them, please give me your email, i will email to you.
Good luck.
Play HD Movies on (Almost) Any PC
From pcworld.
mproved software and drivers, and a new generation of high-definition-assisting graphics cards, allow nearly any PC to play HD movies. ATI and nVidia have added VC1/AVC/h.264 decoding and other HD-assisting features to their latest graphics products.
To determine how slow is too slow for a CPU to play high-definition movies smoothly, I put together two relatively tame test beds: a PCI Express system with a K8N51PVM9-RH nForce 6150 motherboard from Gigabyte, 1GB of DDR 400 memory, and a single-core Athlon FX-53 CPU; and an AGP system consisting of an Abit KV8-MAX Via K8T800-based motherboard, an Athlon 64 3200+ CPU, and 512MB of DDR 266 memory. I used the Xbox drive to play HD DVDs on each system, and I used the BDC-2202 to play Blu-ray titles. In all cases I used a Dell 2407 monitor with a maximum resolution of 1920 by 1200--the resolution required to view high-def movies in their full 1080 splendor.
I gradually underclocked the FX-53 from its native 2.4 GHz down to 1 GHz to see how low I could go before playback deteriorated. Unfortunately, the 3200+ was locked at 2 GHz, so I was forced to extrapolate results based on CPU usage.
I tested four graphics cards on the PCIe system: MSI's ATI-based HD 2400 Pro and HD 2600 XT, and XFX's nVidia-based 8400GS and 8600GT. Visiontek's Radeon HD 2600--the only fully offloading AGP card I've located--was used with the KV8-MAX.
I used Cyberlink's PowerDVD 7.3 software player to play the Blu-ray version of Casino Royale and the HD DVD version of Lucky Number Slevin, both of which are encoded with AVC--the most processor-intensive codec. I did all the testing under Vista, but I disabled the Aero interface and Windows Search. I eyeballed the movies for smooth playback and I monitored CPU usage.
After I updated PowerDVD to build 3502 to eliminate a glitch I encountered when playing Lucky Number Slevin, all of the PCIe cards proved extremely efficient at offloading HD movie playback. Even MSI's budget 2400 Pro managed to play Casino Royale acceptably at 1 GHz, albeit at its 720p limit, with about 95 percent CPU usage. Its more-capable HD 2600 sibling hit about the same CPU usage at 1 GHz, but it rendered at full 1080p resolution. I had to set the CPU to at least 1.2 GHz to smooth playback of Lucky Number Slevin with either ATI card.
Neither the XFX 8400GS nor the 8600GT managed acceptable playback at 1 GHz, but at 1.2 GHz and higher they played both movies flawlessly, and they ran every other HD DVD and Blu-ray title I threw at them just as well.
The AGP Visiontek HD 2600 was equally facile with the test bed running at 2 GHz. Though I couldn't underclock the system, it was using only 65 percent of the CPU cycles, suggesting that I could have dropped the processor speed to at least 1.4 GHz before encountering any noticeable glitches.
It's impossible to create concrete system requirements on the basis of my small test sampling, but clearly you don't need a state-of-the-art system to play high def, as vendors often suggest.
My results indicate that any PCIe or AGP system with a 1.4-GHz or faster CPU--single- or dual-core, AMD or Intel--and a reasonably fast hard drive should suffice for high-def movie playback, if you use one of the graphics cards I tested. Even if your similarly configured system can't quite make it up the HD hill, upgrading to a CPU that can handle the load will cost you only about $50. Browse to How to Replace Your CPU - PC World Video for step-by-step instructions.
How Slow Can High Def Go?
You don't need the latest PC configuration to play high-def movies. In our tests, even inexpensive graphics boards and relatively slow CPUs supported acceptable playback quality.
mproved software and drivers, and a new generation of high-definition-assisting graphics cards, allow nearly any PC to play HD movies. ATI and nVidia have added VC1/AVC/h.264 decoding and other HD-assisting features to their latest graphics products.
ATI's Radeon HD 2600 and nVidia's GeForce 8400GS, which cost a mere $90 each on the street, do a fine job of offloading high-def chores. For better gaming performance and additional video-processing features, spend a few dollars more for ATI's Radeon HD 2900 (about $300 online) or nVidia's GeForce 8500GT ($100 or so online) or 8600GT (about $120 online). Many graphics cards that tout their support for HD don't completely offload the decoding chores. At this writing, only the cards mentioned above fully offload video processing--using ATI's Universal Video Decoder and nVidia's VP2, respectively. ATI's entry-level Radeon HD 2400 is a special case: Though it offloads HD processing, in my tests it rendered movies at only 720 lines of vertical resolution. Since 1080 lines are high-definition movies' raison d'etre, I can't recommend this card for HD movie playback.
The Software Side
Software to play HD DVD and Blu-ray movies on your computer costs more than some HD-assisting graphic cards. Cyberlink's $99 PowerDVD is the most versatile and reliable program I've found. Intervideo's WinDVD 8 Platinum HD BD, which supports only nVidia-based cards, is available at the online store of new owner Corel for $70. The company says that support for the ATI cards is in the works.
For owners of Nero 8 Ultra Edition, there's a $30 HD DVD/Blu-ray plug-in for the suite's ShowTime player, but this app supports only commercial HD DVDs--it plays back only non-HDCP (High-bandwidth Digital Content Protection) consumer BD-AV discs, which lack advanced menus and other interactive features. ShowTime will play back commercial Blu-ray titles via a free upgrade scheduled for release early this year. Unfortunately, ShowTime supports HDCP over an HDMI connection only, which is adequate for TV output but not for PC use, since most people use DVI to attach their displays.
The Drive You Need
Cheaper Blu-ray drives are expected very soon, but for now your lowest-cost option for Blu-ray is Pioneer's BDC-2202, a $300 internal DVD burner that reads Blue-ray discs. Microsoft's $179 Xbox USB external HD DVD drive can play HD DVDs on a PC, though the company doesn't publicize or support this capability. Still, the product is plug-and-play on both XP and Vista, and it's often on sale. HP's similar HD100 costs about $200.
To burn Blu-ray discs, you need to pony up $600 for an external drive, such as the second-generation Sony BDW-200S or Philips's SPD7000, or spend $500 for the Lite-On LH-2B1S. Unfortunately, you can't upgrade your current PC or laptop with internal read/write or read-only HD DVD drives, which thus far are available in this country only in new systems.
HD Minimum RequirementsTo determine how slow is too slow for a CPU to play high-definition movies smoothly, I put together two relatively tame test beds: a PCI Express system with a K8N51PVM9-RH nForce 6150 motherboard from Gigabyte, 1GB of DDR 400 memory, and a single-core Athlon FX-53 CPU; and an AGP system consisting of an Abit KV8-MAX Via K8T800-based motherboard, an Athlon 64 3200+ CPU, and 512MB of DDR 266 memory. I used the Xbox drive to play HD DVDs on each system, and I used the BDC-2202 to play Blu-ray titles. In all cases I used a Dell 2407 monitor with a maximum resolution of 1920 by 1200--the resolution required to view high-def movies in their full 1080 splendor.
I gradually underclocked the FX-53 from its native 2.4 GHz down to 1 GHz to see how low I could go before playback deteriorated. Unfortunately, the 3200+ was locked at 2 GHz, so I was forced to extrapolate results based on CPU usage.
I tested four graphics cards on the PCIe system: MSI's ATI-based HD 2400 Pro and HD 2600 XT, and XFX's nVidia-based 8400GS and 8600GT. Visiontek's Radeon HD 2600--the only fully offloading AGP card I've located--was used with the KV8-MAX.
I used Cyberlink's PowerDVD 7.3 software player to play the Blu-ray version of Casino Royale and the HD DVD version of Lucky Number Slevin, both of which are encoded with AVC--the most processor-intensive codec. I did all the testing under Vista, but I disabled the Aero interface and Windows Search. I eyeballed the movies for smooth playback and I monitored CPU usage.
After I updated PowerDVD to build 3502 to eliminate a glitch I encountered when playing Lucky Number Slevin, all of the PCIe cards proved extremely efficient at offloading HD movie playback. Even MSI's budget 2400 Pro managed to play Casino Royale acceptably at 1 GHz, albeit at its 720p limit, with about 95 percent CPU usage. Its more-capable HD 2600 sibling hit about the same CPU usage at 1 GHz, but it rendered at full 1080p resolution. I had to set the CPU to at least 1.2 GHz to smooth playback of Lucky Number Slevin with either ATI card.
Neither the XFX 8400GS nor the 8600GT managed acceptable playback at 1 GHz, but at 1.2 GHz and higher they played both movies flawlessly, and they ran every other HD DVD and Blu-ray title I threw at them just as well.
The AGP Visiontek HD 2600 was equally facile with the test bed running at 2 GHz. Though I couldn't underclock the system, it was using only 65 percent of the CPU cycles, suggesting that I could have dropped the processor speed to at least 1.4 GHz before encountering any noticeable glitches.
It's impossible to create concrete system requirements on the basis of my small test sampling, but clearly you don't need a state-of-the-art system to play high def, as vendors often suggest.
My results indicate that any PCIe or AGP system with a 1.4-GHz or faster CPU--single- or dual-core, AMD or Intel--and a reasonably fast hard drive should suffice for high-def movie playback, if you use one of the graphics cards I tested. Even if your similarly configured system can't quite make it up the HD hill, upgrading to a CPU that can handle the load will cost you only about $50. Browse to How to Replace Your CPU - PC World Video for step-by-step instructions.
How Slow Can High Def Go?
You don't need the latest PC configuration to play high-def movies. In our tests, even inexpensive graphics boards and relatively slow CPUs supported acceptable playback quality.
Contemplate HD with home theater.
(photo by ti-pha)A systems is standard:
- LCD 32"
- Mac mini + HDD 320G
- WD HD + HDD 1TB
- Ampli.
- Sound 7.1
I like Apple.
High-definition television
High-definition television (or HDTV) is a digital television broadcasting system with higher resolution than traditional television systems (standard-definition TV, or SDTV). HDTV is digitally broadcast; the earliest implementations used analog broadcasting, but today digital television (DTV) signals are used, requiring less bandwidth due to digital video compression.
HDTV broadcast systems are identified with three major parameters:
* Frame size in pixels is defined as number of horizontal pixels x number of vertical pixels, for example 1280 x 720 or 1920 x 1080. Often the number of horizontal pixels is implied from context and is omitted.
* Scanning system is identified with the letter p for progressive scanning or i for interlaced scanning.
* Frame rate is identified as number of video frames per second. For interlaced systems an alternative form of specifying number of fields per second is often used. Recently the uniform notation of specifying number of frames per second both for progressive and interlaced video has become increasingly popular.[18]
If all three parameters are used, they are specified in the following form: [frame size][scanning system][frame rate]. Often, one parameter can be dropped if its value is implied from context. In this case the remaining numeric parameter is specified first, followed by the scanning system.
For example, 1920x1080p25 identifies progressive scanning format with 25 frames per second, each frame being 1920 pixels wide and 1080 pixels high. The 1080i25 or 1080i50 notation identifies interlaced scanning format with 50 fields(25 frames) per second, each frame being 1920 pixels wide and 1080 pixels high. The 1080i30 or 1080i60 notation identifies interlaced scanning format with 60 fields (30 frames) per second, each frame being 1920 pixels wide and 1080 pixels high. The 720p60 notation identifies progressive scanning format with 60 frames per second, each frame being 720 pixels high, 1280 pixels horizontally are implied.
While 50Hz systems have only three scanning rates: 25i, 25p and 50p, 60Hz systems operate with much wider set of frame rates: 23.98p, 24p, 29.97i/59.94i, 29.97p, 30p, 59.94p and 60p. In the days of standard definition television, the fractional rates were often rounded up to whole numbers, like 23.98p was often called 24p, or 59.94i was often called 60i. High definition television allows using both fractional and whole rates, therefore strict usage of notation is required. Nevertheless, 29.97i/59.94i is almost universally called 60i, likewise 23.98p is called 24p.
For commercial naming of a product, the frame rate is often dropped and is implied from context, e.g. a "1080i television set". A frame rate can also be specified without a resolution. For example 24p means 24 progressive scan frames per second, and 50i means 25 interlaced frames per second. Most HDTV systems support resolutions and frame rates defined either in the ATSC table 3, or in EBU specification. The most common are noted below.
(Wikipedia)
HDTV broadcast systems are identified with three major parameters:
* Frame size in pixels is defined as number of horizontal pixels x number of vertical pixels, for example 1280 x 720 or 1920 x 1080. Often the number of horizontal pixels is implied from context and is omitted.
* Scanning system is identified with the letter p for progressive scanning or i for interlaced scanning.
* Frame rate is identified as number of video frames per second. For interlaced systems an alternative form of specifying number of fields per second is often used. Recently the uniform notation of specifying number of frames per second both for progressive and interlaced video has become increasingly popular.[18]
If all three parameters are used, they are specified in the following form: [frame size][scanning system][frame rate]. Often, one parameter can be dropped if its value is implied from context. In this case the remaining numeric parameter is specified first, followed by the scanning system.
For example, 1920x1080p25 identifies progressive scanning format with 25 frames per second, each frame being 1920 pixels wide and 1080 pixels high. The 1080i25 or 1080i50 notation identifies interlaced scanning format with 50 fields(25 frames) per second, each frame being 1920 pixels wide and 1080 pixels high. The 1080i30 or 1080i60 notation identifies interlaced scanning format with 60 fields (30 frames) per second, each frame being 1920 pixels wide and 1080 pixels high. The 720p60 notation identifies progressive scanning format with 60 frames per second, each frame being 720 pixels high, 1280 pixels horizontally are implied.
While 50Hz systems have only three scanning rates: 25i, 25p and 50p, 60Hz systems operate with much wider set of frame rates: 23.98p, 24p, 29.97i/59.94i, 29.97p, 30p, 59.94p and 60p. In the days of standard definition television, the fractional rates were often rounded up to whole numbers, like 23.98p was often called 24p, or 59.94i was often called 60i. High definition television allows using both fractional and whole rates, therefore strict usage of notation is required. Nevertheless, 29.97i/59.94i is almost universally called 60i, likewise 23.98p is called 24p.
For commercial naming of a product, the frame rate is often dropped and is implied from context, e.g. a "1080i television set". A frame rate can also be specified without a resolution. For example 24p means 24 progressive scan frames per second, and 50i means 25 interlaced frames per second. Most HDTV systems support resolutions and frame rates defined either in the ATSC table 3, or in EBU specification. The most common are noted below.
(Wikipedia)
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