Red5/FMS live video bandwidth computing

VideoRecording is a function that is often used by the FCS. The important thing is to evaluateVideoSuitable size and rate are required for recording bandwidth.
Its roughAlgorithmYes:
Video width x video height x playback rate (FPS) = Total Bandwidth (bits/sec)
However, you must note that BPS is used when recording with the FCS, instead of kbps. To convert (8 bits = 1 byte)
For example, a video window of 320x240 is recorded at a rate of 30 FPS. The bandwidth consumption is calculated as follows:

320x240x30 FPS = 2.3 Mbps = 288 Kbyte

 

So how can we set different video settings based on bandwidth conditions? Here are some suggestions.
1: // If the width above 1 m is used, you can use the following settings:
2: Camera. setmode (320,240, 15 );
3: setkeyframe (60 );
4: Camera. setquality (144,000, 85 );
5: microphone. setrate (22 );
6: // total consumed bandwidth: 1,196 kbps = 144 Kbyte

1: // 786 kbps Broadband:
2: Camera. setmode (240,180, 12 );
3: setkeyframe (48 );
4: Camera. setquality (64,800, 85 );
5: microphone. setrate (22 );
6: // total consumed bandwidth: 562 kbps = 70 Kbyte

1: // 384 kbps Broadband:
2: Camera. setmode (192,144, 7 );
3: setkeyframe (28 );
4: Camera. setquality (24,192, 85 );
5: microphone. setrate (11 );
6: // total consumed bandwidth: 216 kbps = 27 Kbyte

1: // 56 kbps Dialing:
2: Camera. setmode (80, 60, 8 );
3: setkeyframe (32 );
4: Camera. setquality (4,800, 85 );
5: microphone. setrate (8 );
6: // total consumed bandwidth: 54 kbps = 7 Kbyte

Assume that the bandwidth required for a video is 8 K and the number of connections in the bandwidth requirement table is

Number of connections	bandwidth required for video publishing	bandwidth required for video playback	server requirements
2	8 KB/S	8 KB/S	32 kb/s
3	8 KB/S	16 kb/s	72 KB/S
4	8 KB/S	24 KB/S	128 kb/s
5	8 KB/S	32 kb/s	200 kb/s
10	8 KB/S	72 KB/S	800 KB/S
20	8 KB/S	152 kb/s	3.2 Mb/s
50	8 KB/S	392 kb/s	20 Mb/s