26234-450 : PSS ; Protocols and code

26234-450: Transparent end-to-end Packet-switched Streaming Service(PSS); Protocols and codecs

1. System Description

• Video, Audio & Speech : RTP/UDP
• Still images, Bitmap graphics, Vector graphics & Text : HTTP/TCP
• Presentation description : RTSP/UDP or TCP

2. Protocols

• Session descriptions : SMIL, SDP, or plain RTSP URL
• RTSP :

- shall follow appendix D of RFC-2326 rules for minimal on-demand playback
- shall implement the DESCRIBE method
- shall implement the Range header field
- shall include the Range field in all PLAY responses

• SDP : always include the following fields int the SDP

- "a=control:"
- "a=range:"
- "a=rtpmap:"
- "a=fmtp:"
- "b=AS:" for bandwidth of the session and the individual media in the presentation

• MIME media types

- AMR narrow band & wide band : RFC 3267
- MPEG-4 AAC & video codec : RFC 3016; if "cpresent=0", configuration info. is only carried SDP's "config" parameter
- H.263 : ITU-T Recommendation H.263: "Video coding for low bit rate communication".
- JPEG : RFC 2046
- GIF : RFC 2046
- XHTML : RFC 3236

3. Data transport

• RTP over UDP/IP

- AMR narrow band & wid band : RFC 3267
- MPEG-4 AAC & video codec : RFC 3016
- H.263 : RFC 2429

• HTTP over TCP/IP

- Still images(JPEG, JFIF)

a. baseline DCT, non-differential, Huffman coding, ad defined in table B.1, symbol "SOF0' in ITU-T Recommendation T.81 (1991) | ISO/IEC 10918-1 (1992):
b. progressive DCT, baseline DCT, non-differential, Huffman coding, ad defined in table B.1, symbol "SOF2' in ITU-T Recommendation T.81 (1991) | ISO/IEC 10918-1 (1992):

- Bitmap graphics

a. GIF87a
b. GIF89a

- Text

a. XHTML Basic ; "http://www.w3.org/TR/2000/REC-xhtml-basic-20001219"
b. UTF-8 ; "ISO/IEC 10646-1 (2000)"
c. UCS-2 ; "The Unicode Standard", Version 3.0 Reading, MA, Addison-Wesley Developers Press, 2000, ISBN 0-201-61633-5.