[M4IF Technotes] some questions on delivery of mp4 streams

[Huang Wendong]

Hi:
I am doing the work about mpeg4. I have some questions
on the delivery of mp4 streams.
1. How is the BIFS information generated ?
2. For different sessions of the same mp4 file,
   say session A and session B , do they have 
   the identical BIFS streams ?
   do one object have the same object_id among
   different sessions ?
   do one elementary stream have the same es_id 
   among different sessions ?
3.For the scenario of remote retrieval, does the video
server respond to the request of a client to send
an AV-object to the client, just as the name imply,
or the server take the mode of pushing, actively 
send content to the client ?
4.The network conditons are hide by the DMIF layer.
The client request objects according to the BIFS.
When the bandwidth becomes narrow and cannot 
accomodate all the objects, who make the decision
of discarding the object ? What rules it comply 
with ?
5.Is there any information about the importance of the
various objects?
6.Can the client side accomplish the presentation in 
 the case of loss of some video objects ?
Best Regards,
Huang Wendong
Jan 28, 2024