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However, most NTSC players cannot play PAL discs, and most NTSC TVs do not accept 576i video signals as used on PAL/SECAM DVDs. Those in NTSC countries, such as the United States, generally require both a region-free, multi-standard player and a multi-standard television to view PAL discs, or a converter box, whereas those in PAL countries ...
AVCHD DVDs can only be played back on DVD/Blu-ray players specifically designed to do so. The AVCHD specification limits data rate for DVD-based AVCHD camcorders to 18 Mbit/s, but no DVD-based AVCHD camcorder manufactured to date is capable of recording at data rate higher than 12 Mbit/s (Canon, Sony) or 13 Mbit/s (Panasonic).
The DVD specification does not permit a display framerate of 23.976 -- that isn't NTSC or PAL, it's 480p24, which is incompatible with an NTSC signal. By manipulating the RFF and TFF flags in the MPEG-2 video stream, you can trick the decoder into performing a 3:2 pulldown and converting video encoded at 23.976fps into 480i60, but the MPEG2 ...
The existence of those multi-standard receivers was probably part of the drive for region coding of DVDs. As the color signals are component on disc for all display formats, almost no changes would be required for PAL DVD players to play NTSC (525/29.97) discs as long as the display was frame-rate compatible.
The DVD, Blu-ray Disc, and UMD media formats all support the use of region coding; DVDs use eight region codes (Region 7 is reserved for future use; Region 8 is used for "international venues", such as airplanes and cruise ships), and Blu-ray Discs use three region codes corresponding to different areas of the world. Most Blu-rays, however, are ...
Typically, the data rate for DVD movies ranges from 3 to 9.5 Mbit/s, and the bit rate is usually adaptive. DVD-Video was first available in Japan on October 19, 1996 (with major releases beginning December 20, 1996), [5] followed by a release on March 24, 1997, in the United States. [7]
This process can be reversed to retrieve the original 24 frame per second content. 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. ^ f As of July 2008, about 66.7% of Blu-ray discs are region free and 33.3% use region codes. [6]
In the USA proper, the ability for an American TV set, or DVD player to play back a PAL DVD became widespread throughout the 2000s. By 2009 about 80% of DVD and TV setups in the United States could play a PAL DVD. So now a PAL DVD can be sold in the United States, without the need about issues with the DVD, converted into NTSC.