[Speex-dev] rtp payload lenth

[Pawel Cyrta]

Thank you for help.

I have prepared table summarising :

                  
+------+------------------+-------------+------------------------+
                  | mode | first 5 bit flag |  bitrate    |     frame 
size            |
                  
+------+------------------+-------------+------------------------+
                  |   1  |   0 0001 (x8)       | 2.15 kbit/s |     43 
bits (5.375 Bytes) |
                  |      |                   |             |         
                    |
                  |   2  |   0 0010 (x10)      | 5.95 kbit/s | 119 bits 
(14.875 Bytes)|
                  |      |                   |             |            
               |
                  |   3  |   0 0011 (x18)      | 8.00 kbit/s | 160 bits 
(20 Bytes)       |
                  |      |                   |             |            
               |
                  |   4  |   0 0100 (x20)      | 11.0 kbit/s | 220 bits 
(27,5 Bytes)  |
                  |      |                   |             |             
           |
                  |   5  |   0 0101 (x28)      | 15.0 kbit/s |    300 
bits (37.5 Bytes)  |
                  |      |                   |             |            
               |
                  |   6  |   0 0110 (x30)    | 18.2 kbit/s | 364 bits 
(45.5 Bytes)  |
                  |      |                   |             |            
                  |
                  |   7  |   0 0111 (x38)      | 24.6 kbit/s |    492 
bits (5.375 Bytes) |
                  |      |                   |             |            
               |
                  |   8  |   0 1000 (x40)      | 3.95 kbit/s |  79  bits 
(9.875 Bytes)|
                  
+------+---------------+----------------+------------------------+
                 
                  *in VBR all of modes from 1 to 7 are possible


 >If anyone wants to build that knowledge into wireshark, I'd be willing
 >to help by providing the rest of the knowledge required.

What kind effect would like to obtain? A plugin to visualize rtp frame 
payload when It is speex?
I think wireshark do not give any visualization for codecs or rtp 
payload content.


Pawel

-------------- next part --------------
                  +------+------------------+-------------+------------------------+
                  | mode | first 5 bit flag |  bitrate    | 	frame size 		   |
                  +------+------------------+-------------+------------------------+
                  |   1  |   0 0001 (x8)   	| 2.15 kbit/s |	 43 bits (5.375 Bytes) |
                  |      |               	|             |	 	 				   |
                  |   2  |   0 0010 (x10)  	| 5.95 kbit/s | 119 bits (14.875 Bytes)|
                  |      |               	|             |						   |
                  |   3  |   0 0011 (x18)  	| 8.00 kbit/s | 160 bits (20 Bytes)	   |
                  |      |               	|             |						   |
                  |   4  |   0 0100 (x20)  	| 11.0 kbit/s | 220 bits (27,5 Bytes)  |
                  |      |               	|             |         			   |
                  |   5  |   0 0101 (x28)  	| 15.0 kbit/s |	300 bits (37.5 Bytes)  |
                  |      |               	|             |						   |
                  |   6  |   0 0110 (x30)	| 18.2 kbit/s | 364 bits (45.5 Bytes)  |
                  |      |               	|             |			   			   |
                  |   7  |   0 0111 (x38)  	| 24.6 kbit/s |	492 bits (5.375 Bytes) |
                  |      |               	|             |						   |
                  |   8  |   0 1000 (x40)  	| 3.95 kbit/s |  79  bits (9.875 Bytes)|
                  +------+---------------+----------------+------------------------+
				  
				  *in VBR all of modes from 1 to 7 are possible
	
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