[Live-devel] Why H264 annexB bytestream transported incompletely?

[Ross Finlayson]

Something that I just noticed:

>     num_packets_received    6153
>     kBytes_received_total   2793.262000

Therefore, the average packet size is about 454 bytes.  That's OK.


>     kbits_per_second_ave    7440.833705
>     packet_loss_percentage_ave      13.264731

Therefore, the data rate that you're sending is about 7440/(1-0.13) = 
8552 kbps.  At 50 frames per second, that means that each frame 
averages 171 kbits, or 21 kBytes.  That seems too large, and is not 
consistent with an average packet size of 454 bytes.


>     inter_packet_gap_ms_ave 0.486910

That's much too low, if you really are sending packets 20 ms apart.


>        
>    The frame rate of my bytestream is fixed(0.02s), so I set 
>durationTime as 20ms

Remember that for a 20ms duration, you need to set 
"fDurationInMicroseconds" to 20000 (not 20).  Are you sure you're 
doing this correctly?
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/