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H.261 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers

Part No. H.261
Description  LINE TRANSMISSION OF NON-TELEPHONE SIGNALS
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Maker  ETC1 [List of Unclassifed Manufacturers]
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Recommendation H.261
(03/93)
i
CONTENTS
Recommendation H.261
(03/93)
Page
1
Scope ..............................................................................................................................................................
1
2
Brief specification ..........................................................................................................................................
1
2.1
Video input and output......................................................................................................................
2
2.2
Digital output and input ....................................................................................................................
2
2.3
Sampling frequency ..........................................................................................................................
2
2.4
Source coding algorithm ...................................................................................................................
2
2.5
Bit rate ..............................................................................................................................................
2
2.6
Symmetry of transmission.................................................................................................................
3
2.7
Error handling ...................................................................................................................................
3
2.8
Multipoint operation .........................................................................................................................
3
3
Source coder...................................................................................................................................................
3
3.1
Source format....................................................................................................................................
3
3.2
Video source coding algorithm .........................................................................................................
3
3.3
Coding control ..................................................................................................................................
6
3.4
Forced updating ................................................................................................................................
6
4
Video multiplex coder ....................................................................................................................................
7
4.1
Data structure ....................................................................................................................................
7
4.2
Video multiplex arrangement............................................................................................................
7
4.3
Multipoint considerations .................................................................................................................
18
5
Transmission coder.........................................................................................................................................
19
5.1
Bit rate ..............................................................................................................................................
19
5.2
Video data buffering .........................................................................................................................
19
5.3
Video coding delay ...........................................................................................................................
20
5.4
Forward error correction for coded video signal...............................................................................
20
Annex A – Inverse transform accuracy specification...............................................................................................
21
Annex B – Hypothetical reference decoder .............................................................................................................
22
Annex C – Codec delay measurement method.........................................................................................................
23
Annex D – Still image transmission.........................................................................................................................
24




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