asp net mvc 4 barcode generator Application Details: DVD-Video and DVD-Audio in Software

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Application Details: DVD-Video and DVD-Audio
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TABLE 621 DVD-Video Resolutions (Rasters)
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525/60 (NTSC) 625/50 (PAL/SECAM) (16:9 aspect ratio allowed) 720 720 480 576 704 704 480 576
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(16:9 aspect ratio not allowed) 352 352 480 576 352 352 240 288
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ratios because the 720-pixel version includes more of the horizontal overscan area (with a scanning line period of 5333 microseconds), whereas the 704-pixel version is a tight scan (with a line period of 5215 microseconds) There is an alternate way of calculating pixel aspect ratios that divides the horizontal count by the vertical count and then divides the result by the picture aspect ratio Confusingly, this gives a height-width aspect ratio rather than a consistent width-height aspect ratio Table 622 includes values from the alternate method in parentheses as reciprocals and also adjusts them to match television scanning rates The table also shows the integral conversion ratios used by most video digitizing hardware that converts between square and nonsquare pixels Of course, there are no horizontal pixels in analog signals, although scan lines correspond to vertical pixels Using the traditional (and rather subjective) television measurement of lines of horizontal resolution per picture height (TV lines, or TVL), DVD has a theoretical maximum of 540 lines on a standard TV [720/(4/3)] and 405 on a widescreen TV [720/(16/9)] Lines of horizontal resolution also can be approximated at 80 per MHz DVD s MPEG-2 luma component is sampled at 675 MHz, which results in 540 lines The actual observable lines of horizontal resolution may be closer to 500 on a standard TV due to low-pass filtering in the player Typical luma frequency response maintains full amplitude to between 50 and 55 MHz This is below the 675 MHz native frequency of the MPEG-2 digital signal In other words, most players fall short of reproducing the full quality of DVD Chroma frequency response is half that of luma For comparison, video from a laserdisc player has about 425 lines of horizontal resolution (53 MHz), SuperVHS and Hi8 have about 400 (5 MHz), broadcast television has about 335 (42 MHz),7 and video from a VHS VCR has about 240 (3 MHz)
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Measurements for broadcast are usually tighter than those for recorded media, so broadcast quality is closer to SuperVHS and Hi8 than the numbers would indicate
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TABLE 622 DVD-Video Pixel Aspect Ratios
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Resolution 720 704 352 720 704 352 352 352
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4:3 Display 0909 (1/1095) Standard Integral Ratio 10/11 16:9 Display 1212 (1/0821)
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480,a 480,b 240b 576,a 576,b 288b 480b 576
1091 (1/09157)
59/54
1455 (1/0687)
1818 (1/219) 2182 (1/1831)
20/11 118/54
2424 (1/0411) 2909 (1/0343)
Overscan
Exact scan
TABLE 623 Resolution Comparison of Different Video Formats
Format
VCD (178)
VCD (133)
VHS (178)
VHS (133)
LD (178)
LD (133)
DTV3
DTV4 (178)
(178/133) (178)
Horizontal pixels Vertical pixels Total pixels x VCD (16:9) x VCD (4:3) x VHS (16:9) x VHS (4:3) x LD (16:9) x LD (4:3)
1,920
1,080
63,360 84,480 119,880 4:3 189 142
159,840 204,120 252 189 4:3 322 242 170 128
272,160 345,600 430 322 227 170 4:3 545 409 288 216 169 127
921,600 2,073,600 1455 1091 769 577 451 339 267 3273 2455 1730 1297 1016 762 600 225
x DVD (16:9/4:3) x DTV3 (16:9)
Note: 16:9 aspect ratios for VHS, LD, and VCD are letterboxed in a 4:3 picture Comparisons between different aspect ratios are not as meaningful These are shown in italics Comparisons at 185 or 235 letterbox aspect ratios are essentially the same as at 178 (16:9)
Application Details: DVD-Video and DVD-Audio
DVD resolution in pixels can be roughly compared with analog video formats by considering pixels to be formed by the intersections of active scan lines and lines of horizontal resolution adjusted for aspect ratio Table 623 shows how the resolution of DVD compares with other formats, including the two high-definition formats of the US ATSC proposal (labeled DTV3 and DTV4), which also correspond to the H0 and H1 levels of the Microsoft/Intel/Compaq Digital TV Team proposal Also see Table A-17 for additional video resolution figures Widescreen Format Video can be stored on a DVD in aspect ratios of 4:3 or 16:9 The 16:9 format is anamorphic, meaning the picture is squeezed horizontally to fit a 4:3 rectangle and then unsqueezed during playback DVD players can produce video in essentially four different ways:
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