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vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 09:53
by utnho1808
Hi,
I am implementing DASH over heterogeneous wireless network. I found that the VLC - dash plugin source code they just down load each block from server and append it to byte_stream chain. How to reorder blocks downloaded from multiple wireless network interfaces and append them to byte_stream chain to playout ? Thanks for advance.

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 13:17
by Rémi Denis-Courmont
You can't. The TCP/IP stack reorders packet before they reach VLC.

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 16:56
by utnho1808
I still not understand what you said. For example I have 3 wireless networks wifi 802.11g, 802.11n and LTE. So how can I streaming over these wireless network for bandwidth aggregation ?

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 17:00
by utnho1808
And I intend to create 3 sockets for 3 wireless network interface for sending byte-range request and download blocks from server ? Is that correct ?

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 17:13
by Rémi Denis-Courmont
I very much doubt that's ever going to work. The extra latency in sending many ranged requests will ruin the theoretical bandwidth gains.

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 17:17
by utnho1808
So do you have any idea for this problem please let me know ?

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 17:46
by Rémi Denis-Courmont
My advice is to not use range requests for aggregation. I think I was clear in the previous post.

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 17:52
by utnho1808
So what we can use for this situation ?

Re: vlc DASH over heterogeneous wireless network

Posted: 15 Oct 2012 19:32
by Rémi Denis-Courmont
Gee, that's for you to figure out.