[Mp4-tech] [Mp4-teach][Video]H.264 scalability

[mdorlando univ.trieste.it]

Dear All, 
I am very interested in the H.264 video transmission in packet loss 
environment. I know the proposed extention - named scalability - of the H.264 
standard. I read some papers on scalability extentions such as MCTF. 
I would like to simulate transmission of scalable streams and to evaluate 
final user performance. 
I download the MCTF codec and I generate test sequences, separating the layers 
and simulating transmission using network simulator. 
The received packets are then combined and decoded by the MCTF decoder. 
But a problem occurs: the decoding process doesn't end and the decoder 
generate some errors. 
I think that happens because the decoder works in an error-free environment. 
Is it right? 
Have you some advice about how to solve this problem? 
Could we insert a reference packet instead of  the NAL lost? 
And now another problem. 
I notice that it is possible to encode a BL (base layer) using a separate 
encoder such as jm83. 
I try to decode a combined stream but the MCTF doesn't finish the decoding 
process. 
I think that there are some limitations in the h.264base layer encoder. 
For example, have I to select only a simlple profile or may I use all other 
features in the h.264 encoder (such as FMO,ASO,data partitioning, redundant 
slice)? 
Your advices would be of great help. Thank you in advance. 
Marco