Hi all,
After some review myself on the "draft-zhipeng-mediactrl-dynamic-
adaptation-00", I like to give some clarifications on the background
and logics on this draft, wishing to help you catch the idea clearer.
As we know, since the variance of services, termainals and media
formats, the adaptation is a very important capability for the media
servers catering for the market's different requirements.
Totally, the service providers, esp. some large ones, will hold
quite a few servers. The deployment and upgrade of servers are a key
issue for the service providing, meanwhile it is a big cost for the
service providers.
To efficiently make use of the existing servers( to server for as
many requests as possible, to make use of the servers as long as
possible) is the focus of the servers' holder, and also is the care
of this draft.
This draft first lists several kinds of adaptations that are needed
for the services.
The author thinks the task of taking the adaptation with regards to
different services and terminals can be splitted from the media
servers and be put on a special adaptor server, hence the media
servers focus on the media providing, do not frequenly take some
changes(switches) during the services.
Hence the total service providing of the system will be enhanced.
For example, three media servers provide three different streams
respectively. The adaptor is responsible to allocate and forward the
streams to the target terminals. That will avoid much adaptations on
the media server. Therefore the media capability of the media
servers can be most utilized during the service.
Another, this system can make use of some old servers as best as
possible. For example, a server does not support much media formats,
so does not own much adaptation capability needed for current
service. So it can merely provide the media that it support. While
some other new media servers can provide the new format stream.
Hence the system containing these different servers will own enough
adaptaion capability while with the least cost.
If you have some other concerns, welcome sincerely.
Thanks.
Best Regards,
Zhipeng
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