MPEG - Moving Picture Experts Group. - ISO ( ) IEC ( ). - ISO/IEC JTC1 SC29 WG11. - - . MPEG CD-i CD-Video, DVD, , , -, , ISDN .
MPEG-1
, , JPG. . , , , . : VHS. 352288 , . MPEG-1 , : .
? , : "" "". : "" "" . - . , - , , , , , - .
MPEG-1 : I-, P- B-. (I-, Intra Frames) . JPEG. P- (Predicted Frames) i-, . B- (Bi-DirectiOnally Interpolated Frames) I- P-.
1/35 . , , VHS, MPEG-1 -. Internet , , .
MPEG-2
MPEG-2 MPEG-1. - 1920 x 1080 , . .
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, MPEG-3 ( - MPEG-1 Audio Layer 3). HDTV. , HDTV MPEG-2.
MPEG-2 720576 . DVD-video MPEG-2. , , , DVD, microMV- . . MPEG-1, , , , . MPEG-2 DVD (4,7 ). , DVD (9 ) (), , , ( ) . , , , .
MPEG-2 19201080 (25 , , ) 6- .
Sony microMV, 12 / ( DVD 9,8 /), ( DV). DV .
, miniDVD MPEG-2. - 1000 , . - ( 30 1 miniDVD ). : DVD , , DVD-.
MPEG-3
(high-defenition television, HDTV) 20-40 /, MPEG-2 . , MP3, MPEG-3, MP3 MPEG Audio Layer III.
MPEG-4
MPEG-1 MPEG-2 Internet - . , , , - MPEG-4. , , " " - , 3D-, . .
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MPEG-4 ( 30-40% ). , ( 250 ). . , - 1,5 . , , , MPEG2 MPEG4.
, - , , , , . - .
MPEG-4 . , . . . AAC (Advanced Audio Codec).
MPEG-4 web-, USB MPEG-4.
, ( MPEG-4 MPEG-2) , GPRS.
, MPEG-4 - . . MPEG-4 ( 3., 4. 5. ) . , . MPEG-4 , , , - .
MJPEG
MPEG- :
1. , , .
2. , ;
3. yuv- (y - , u v - ) - , .
4. (, ).
5. Mpeg- :
I (intra), ;
P (predicted), I P ;
B (bidirectionally predicted), I P .
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(GOP - Group Of Pictures), , . (I0 B1 B2 P3 B4 B5 P6 B7 B8 P9 B10 B11) (I12 B13 B14 P15 B16 B17 P18), I . , P3 I0. . P6 P3, P9 - P6 .. B1 B2 I0 P3, B4 B5 - P3 P6, B7 B8 - P6 P9 .. B- . . : I0 P3 B1 B2 P6 B4 B5 P9 B7 B8 I12 B10 B11 P15 B13 B14 P18 B16 B17
, I, - P, - B. , I 3 , P, P 2-5 , B. .
. - . 16*16 . I- P-. - 396. (slices), 396. 396 . , Y, U- V-. 8*8 . , , (DCT - Discrete Cosine Transform) .
, MJPEG [Motion JPEG] . JPEG-: 8x8 . , JPEG-.
, . , .
MJPEG 1:15 , 1:15 1:25 . [1:30 ] MJPEG JPEG : [ 8x8 ] , "" .
MJPEG , 2 , - . "" MJPEG-, .
MJPEG , MJPEG-.
JPG ( 768576 ). Motion-JPEG ( JPEG). , .. . (, ) M-JPEG 320240 .