Tag skrev:Nu er Black Hawk Down, nok ikke den beste film at bruge, den er så kornet, at det ligyldig, om den bliver afspille på en første klasse DVD afspiller eller HD-DVD og Blu-Ray, det ville se ligså ringe ud.
Prøv at se MI3, i HD-DVD udgaven og i Blu-Ray udgave, hvilken se beste ud, MI3 skal se koret ud, men det er slet, slet ikke så slemt som med Black Hawk Down, som nok er en af de ringest kopier der uden.
Problemet er at Blu-Ray afspiller, er meget (og dyre) ringer, end HD-DVD afspiller.
Men der skulle komme ny model på market over somme i år (det giver så mere tid for HD-DVD, at vinde market), håber bare at de er bedre end, hvad vi ind til nu har set, desværre bliver prisen ikke laver, for top modeller.
Desværre bliver der ikke soldt Dansk HD-DVD (Dansk cover og undertekste), i de Dansk butiker (som men gør med Blu-Ray film), der er mange Tyske HD-DVD udgivelser der er med Dansk undertekste, det kan så ikke værre så svart at udgive dem i Danmark med et Dansk cover, så her er en lille ide til TC, få nogle HD-DVD film til salg i butiker, når i nu ville gå efter HD-DVD, ellere tro jeg at Blu-Ray ville vinde, så Otto kom op af start hulet, og få nogle HD-DVD film til salg i dine butiker (måske i første omgang med Tysk cover, men med Danske undertekster).
Raskolnikov skrev:Hej altid got høre dit perspektiv Coop
Velkommen til!
Tak.
Til de interesserede faldt jeg forresten over en post på AVSforum.com, som meget godt forklarer de to konkurrerende formaters 'ophav' så jeg tillader mig at gengive den ordret:
namechamps skrev:What happened ironicaly is that many people were afraid of the advanced codecs that everyone loves today.
BD started out in 2003 as a recordable only cartridge format. It was 23GB per disc SL/SS. Sony didn't randomly choose that number. 23GB was enough capacity to record 2 hours of OTA HD in it's native mpeg2 stream. Sony and 8 other companies formed the Bluray Group to develop BD as a recordable format. The irony is that because they couldn't perfect a DL disc at the time they spend serious $$$$ on developing a new optical format (i.e 0.1mm top layer, larger Numerical Aperature). The format is now known as the essentially dead Blu-ray Disc Rewritable (RE) Format Version 1.
Around the same time Toshiba & NEC were developing a stamped only format known as AOD. They decided to keep the optical physical structure the same as DVD. A DVD uses same focal length as a CD it simply changes the wavelength from IR to Red. AOD used same proven technology and simply moved from a red diode to blue diode. Despite what seem people still believe AOD(now HD DVD) and BD use the exact same 405nm diode.
In middle of 2003 Toshiba presented AOD to DVD Forum to be named HD DVD. The BD Group saw the formation of HD media as a way to grow BD beyond a record only format. Both sides had a problem though.
AOD didn't have enough space. A DVD9 hold 9.4GB and 1080p has 6.75 the information of 480p so mpeg2 on HDTV would need about 63GB. Now the truth is most DVD9 are not full, extras can be encoded at lower bitrate and audio didn't need a 6.75X improvement however mpeg2 would require about 50-55GB. That is Toshiba proposed changing the codec from mpeg2 to either mjpeg, H.264 or VC-1.
BD had a different problem. It was designed from ground up as a total break from DVD. The 0.1mm top layer required for the larger NA was causing huge problems in trying to convert it to a stamped format and make it dual layered. However if BD could be converted to BD-ROM then it would allow movies to be kept on mpeg2. Despite all the joy over AVC and VC-1 today this was and major advantage for BD.
The DVD Forum arranged some encoding tests for mjpeg, H.264 and VC-1. The initial results were horrible. The results didn't do anything to alleviate the huge concerns the movie industry had for switching from mpeg2. Had it not been for Microsoft AOD would have died. Microsoft was able in a tremendously short time improve the VC-1 codec that AOD looked like it could work.
Sony and the BD group at the time continued to bash these alternate over compressed codecs arguing that they would take years to mature. mpeg2 encoders had nearly a decade of improvement and to throw it away for some unproven tech was radical and dangerous.
Toshiba argued (correct) that software will improve faster than hardware. Hardware in this case refers to the physical format, and related mechanical/optical development. Toshiba argued that the encoders & decoders along with the silicon to power them would continue to increase at a geometric rate while mechanical improvements to disc chemistry, hard coat improvements, optical pickups, physical duplication would improve much slower.
The basic argument between the two formats came down to AOD w/ unproven software and proven optical format or BD with proven mpeg2 and unproven optical format. Software vs Hardware.
Toshiba was able to show high yields even in 2003 due to the similarities to DVD. Simply put BD was ready yet. Sony and backers argued that more time should be devoted to allow BD to develop. In 2003 (and in 2006 some would argue) BD had potential but not results. Toshiba called for a vote that AOD become HD DVD to replace DVD. The improving results from VC-1 and AVC along with duplication test results that were higher than expected results from a prototype technology convinced some but not enough members of the steering committe. The big hold outs were CE companies. They saw profit margins go from hundreds of $$ to virtually nothing on DVD players. The HD DVD was simply a DVD player with blue diode and moderately faster decoding hardware. There was little to guarantee that cheap chinese products wouldn't make HD DVD commodity items in a few years.
The results in DVD Forum is that abstains count against. For example if vote was 3 for, 2 against, and 2 abstain the vote would fail. Toshiba put AOD up to a vote twice and lost due to high number of abstains. Most companies didn't want to vote against HD DVD but they also felt BD had promise given a little more time. It was a nice way of voting down HD DVD without pissing Toshiba off. Toshiba as chairman of DVD Forum changed the rules governing voting. Abstains would no longer count for or against a vote. The vote was brought up a third time in November 2003. While a large % of members abstained the vote passed because the number of for was greater than negative.
In early 2004 the BD group included many of the disaffected CE members and changed the name to BDA. They began to recruit the studios. HD DVD was going to launch in late 2005. If it had done that likely BD would have died long before it could launch but Toshiba ran into a problem they couldn't control. The diodes that had been produced in labs for couple years already were proving virtually impossible to produce commercially in the quality, quantity, and price necessary for CE devices. Toshiba had to push launch back twice. Combined with little CE support (due to fear on margins), low HDTV adoption rates in US, and problems with AACS ratification the idea of a quick transfer from DVD to HD DVD began to look more and more slim. The BDA machine was in full effect courting the studios w/ features and security to weaken HD DVD. When Fox announced BD only support and Sony announced the BD would be a mandatory component in PS3 Toshiba lost the PR battle before it could ship it's first player.
The battle had a heavy price for BD though also. Sony added after numerous refusals to include the new codecs for video & audio. Sony had argued BD had sufficient capacity to have high quality mpeg2 and PCM. Keeping the player simple would compensate for the complicated optics and allow players to market faster. For what it is worth I think Sony was right. If BD had launched same day as HD DVD as mpeg/pcm only with BD50 and flawless PQ/AQ it would have ended the war instantly. BD also added ROM-Mark, BD+, BD-J, BD Live and more resulting in numerous changes to the specs. The result is that BD is a very complicated format and even today many players are not compliant to all of the specs.
Despite the media portrayal of the two sides trying to reach a compromise there never was a chance. BD's major difference with HD DVD is the change in optical design. Take it away and it would have same capacity as HD DVD. Lower capacity would make mpeg2 & LPCM virtually unusable which was a big push by Sony. AOD used many of the same designs as DVD which Toshiba has the lion's share of patents. Take away the similarity to DVD and Toshiba's royalties dry up also.
Tag skrev:Hvis man skal kunne presse et master ned på en 50gb Blu-Ray disk man man da bruge en form for komprimert, ikke
Men der er lykkes at lave en 200gb Blu-Ray diske, så blive det mulig at ligge en ukomprimert maste ned på diske, ja selv en ukomprimert 4K master må de værre mulig at ligge ned på disk.
Men det er et spørsmål også om hvilken farverum, man bruger til at optage biograf film med og det kan bruges i hjemme biografen
De først Blu-Ray Prof. kamera er på vej, men de er dog kun i Full HD (1080p).
Tag skrev:Øv, trode de galt Billde og lyd
Selfølig er Blu-Ray et bedre format til lyd, end SACD og DVD-Audio, mon vi ikke ser i det lange løbe, at overtager SACD og DVD-Audio som HIGH-END lyde format.
Man må så håber at kan kan gå væk fra nogle former for komprimert, så vi for en gang skyld kan få love til at høre den ukomprimert musik.
Ok, Kasper fra TC, så er det komme på der rene.
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