^ h Linear PCM is the only lossless audio codec that is mandatory for both HD DVD and Blu-ray disc players, only HD DVD players are required to decode two lossless sound formats and those are Linear PCM and Dolby TrueHD. 1080p25 content can only be presented on Blu-ray as 1080i50. HD DVD is the only high-def disc format that can decode 1080p25 while Blu-ray and HD DVD can both decode 1080pp30. ^ g DVD supports any valid MPEG-2 refresh rate as long as it is packaged with metadata converting it to 576i50 or 480i60, This metadata takes the form of REPEAT_FIRST_FIELD instructions embedded in the MPEG-2 stream itself, and is a part of the MPEG-2 standard.
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^ f As of July 2008, about 66.7% of Blu-ray discs are region free and 33.3% use region codes. On NTSC DVDs, 24 frame per second content is stored as 60 interlaced frames per second using a process called 3:2 pulldown, which if done properly can also be reversed. This process can be reversed to retrieve the original 24 frame per second content. ^ e On PAL DVDs, 24 frame per second content is stored as 50 interlaced frames per second and gets replayed 4% faster. On HD DVD, DD+ is used to encode all channels (up to 7.1), and no legacy DD track is required since all HD DVD players are required to decode DD+. The DD+ extension is used to replace the rear channels of the DD track with higher fidelity versions, along with adding additional channels for 6.1/7.1 audiotracks. In this method 640 kbit/s is allocated to the primary DD 5.1 audiotrack (which is independently playable on players that do not support DD+), and up to 1 Mbit/s is allocated for the DD+ extension. On Blu-ray Disc, DD+ can only be used to extend a primary Dolby Digital (DD) 5.1 audiotrack.
#Dvd studio pro 4.0.3 plus
^ d There are some differences in the implementation of Dolby Digital Plus (DD+) on the two formats. However, players introduced to the market before this date can continue to be sold without Bonus View. ^ c On NovemSecondary video and audio decoder became mandatory for new Blu-ray Disc players when the Bonus View requirement came into effect.
^ b All HD DVD players are required to decode the two primary channels (left and right) of any Dolby TrueHD track however, every Toshiba made stand-alone HD DVD player released thus far decodes 5.1 channels of TrueHD. First two layers of Blu-ray have a 25 GB capacity, but the triple layer disc adds a further 50 GB making 100 GB total. ^ a These maximum storage capacities apply to currently released media as of January 2012. None (Not intended for prerecorded content) Each disc must use one or more of the mandatory codecs.Ĭhina's AVS / H.264/MPEG-4 AVC / VC-1 / MPEG-2 Mandatory codecs must be supported by the player. Technical details Comparison of the high-definition optical media formats