1.
RTMP
How did we get to now?
Sarah Allen
Veriskope
@ultrasaurus
October 23, 2019

2.
Internet Explorer 83.9%
Netscape Navigator. 12.6%
Opera 0.14%
Flash 99.8%
(bundled with IE & Netscape)
timeline data: www.evolutionoftheweb.combrowser stats: TheCounter Q4 2000

3.
50K
100K
200K

4.
two-way audio/video…
< 100K of code

5.
Streaming
Low-latency
Two-way (mux, demux)
Data
Privacy
2002
Key
Features

6.
2002
Protocol
Audio = 8,
Video = 9,
Data = 18,
SharedObject (Sync) = 19,
Command = 20
-------------------------------------------------------------------------
| | | | | |
|Msg type |Payload Len |timestamp |Stream ID | Payload |
| 1 Byte | 3 bytes | 3 bytes | 3 bytes | Size = Payload Len |
| | | | | |
-------------------------------------------------------------------------

7.
2002
Protocol
-------------------------------------------------------------------------
| | | | | |
|Msg type |Payload Len |timestamp |Stream ID | Payload |
| 1 Byte | 3 bytes | 4 bytes | 3 bytes | Size = Payload Len |
| | | odd order| | |
-------------------------------------------------------------------------
Audio = 8,
Video = 9,
Data = 18,
SharedObject (Sync) = 19,
Command = 20

8.
2002
Protocol
0 1 2 3 4 5 6 7
+-+-+-+-+-+-+-+-+
|fmt| cs id |
+-+-+-+-+-+-+-+-+
0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|fmt| 0 | cs id - 64 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|fmt| 1 | cs id - 64 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Chunk Basic Header
1 byte
2 bytes
3 bytes
Hint: 2^6 = 64

9.
Asymptotic Traffic Flow in a Hyperbolic Network: Non-uniform Traffic, Baryshnikov, Tucci
2002
Protocol

10.
Now?

11.
Streaming
Low-latency
Two-way (mux, demux)
Data
Privacy
2019