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Re: [MMUSIC] [AVTCORE] BUNDLE: a single stream with multiple MIDs?

Christer Holmberg <christer.holmberg@ericsson.com> Wed, 13 July 2016 10:10 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Iñaki Baz Castillo <ibc@aliax.net>
Thread-Topic: [AVTCORE] [MMUSIC] BUNDLE: a single stream with multiple MIDs?
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Date: Wed, 13 Jul 2016 10:10:43 +0000
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Cc: Jonathan Lennox <jonathan@vidyo.com>, IETF AVTCore WG <avt@ietf.org>, mmusic <mmusic@ietf.org>
Subject: Re: [MMUSIC] [AVTCORE] BUNDLE: a single stream with multiple MIDs?
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Hi,

>>Assume you have a conference client with two screens: one constantly
>>shows
>> the ³boss², and one shows the ³loudest speaker².
>>
>> You have one m- line to describe the ³boss² RTP stream.
>>
>> But, you also need an m- line to describe the ³loudest speaker² RTP
>> stream, because often it will NOT be the same as the ³boss² RTP stream.
>
>Why should a remote video representation be tiled to a specific m-line?
>
>How media streams/tracks are represented in the SDP and how the
>frontend app renders them are different things.

SDP is not used to describe how the streams are rendered. The CLUE
protocol is used to define that.

>From an SDP perspective, there are two RTP streams, so there are two m-
lines.

Regards,

Christer

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