Slide title minimum 48 pt Slide subtitle minimum 30 pt RTCWEB Terminology A Discussion of relation between RTCWEB Media Protocol Terminology and the PeerConnection.

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Slide title minimum 48 pt Slide subtitle minimum 30 pt RTCWEB Terminology A Discussion of relation between RTCWEB Media Protocol Terminology and the PeerConnection API

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page RTP Related Terminology ›Multi-Media Session –A communication session between two or more entities –Can contain one or more RTP session –Can be represented by the signalling context –Example representations are in a SIP Dialog or RTSP Session ›RTP Session –One RTP SSRC space shared between 2 or more entities sending zero or more media streams –From a single end-points perspective, usually represented by: ›A port(s) to receive RTP and RTCP ›One or more destinations to send RTP and RTCP to. –Commonly single media type (RTCWEB multiplexing will have multiple types) –Media for a particular purpose and usage in an application context.

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page RTP Related Terminology ›SSRC –Sender Source identifier (also used by receiver only entities to ID its reports) –Identifies a single media source (e.g. camera, microphone, audio mix) –Intended to be unique within an RTP session –Multi-channel audio is commonly sent as a single SSRC using a media format capable either packetizing multiple channels or encoding multiple channels as one bit stream. ›CNAME –Canonical Name –Identifies a synchronization context –Unique within a multi-media session –CName is applied to the SSRCs in one or more RTP sessions that a receiver may synchronize ›Payload Type (PT) –An Identifier representing the encoding and packetization of the media present in the RTP packet body

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page WEBRTC API Terminology ›WebRTC 1.0: Real-time Communication Between Browsers –Based on W3C editors draft dated: 23 Aug 2011: – ›MediaStream object –Contains zero or more tracks –A MediaStream object be forked to create a child that is equal or a subset of the parent object –MediaStream objects can share tracks so one object contains the same tracks, a sub or super set of tracks of another MediaStream object –Each MediaStream has a Label ›MediaStreamTrack –A single media source, multi-channel audio is a single track –Each track can originate from: ›Media device, such as video camera or microphone ›File which plays back in real-time ›Received over network

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page WEBRTC API Terminology ›Label –A Label used to identify a MediaStream when delivered to the other peer –Note: Child objects inherent their parent’s Label ›PeerConnection –A communication association between two peers –Media negotiation signalling is done on PeerConnection level –Is configured with STUN and TURN server resources –Contains ICE, Media Transport, etc.

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page Discussion: MediaStream and Label ›A MediaStreamTrack can be mapped to a SSRC in an RTP session ›A MediaStreamTrack has a synchronization context, that could be represented by the CNAME –CNAME needs to be the same by all MediaStreamTracks that are part of the same context, e.g. captured in the same room ›A MediaStream sent by a PeerConnection can be represented by a list of RTP session:SSRC tuples ›The MediaStream label has no matching construct –The SDP a=label attribute labels RTP sessions, not a set of SSRCs in possibly several RTP sessions –Needs to be exchanged between peers –The MediaStream Label can’t be CNAME: ›The same track can be part of multiple MediaStreams –Needs to be specified!

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page Discussion: RTP sessions ›Lets look at the small non-centralized conference: –Uses Mesh between A, B and C. ›Current PeerConnection definition results in one Peer Connection between each pair of peers, i.e AB, AC and BC ›The WebApp in A can bind the same MediaStream object to both PeerConnections (AB and AC) –Thus delivering the same media sources to both peers –The exact media configuration for each PeerConnection may be desirable to vary ›Different amount of screen estate at peers ›Application logic’s usage of streams ›Capability negotiation between peers may result in different codecs etc. A C B

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page Discussion: RTP sessions ›Two possible RTP Session structures: –The first is one RTP session over all PeerConnections ›Implies same media streams to all participants ›Allows for RTCP information for legs a peer is not directly involved in. ›No Use case requiring this structure currently –The second alternative is to use individual RTP session(s) for each PeerConnection ›Allows different rates and codecs in each PeerConnection ›Adaptation modules needs to combine information across multiple PeerConnections and RTP sessions ›The application context may need common information across the peers –Identities of streams –Synchronization contexts Application Context RTP Session A C B Application Context A C B

Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./ :; VWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨ ©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ× ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀā ĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅ ņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹ źŻżŽžƒˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡…‰‹›⁄€™−≤≥fifl ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶ ĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮ ŰŰŲŲŴŴŶŶŹŹŻŻ ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊ ΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФ ХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХ ЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏ ѢѢѲѲѴѴ ҐҐәǽ ẀẁẂẃẄẅỲỳ№ Do not add objects or text in the footer area RTCWEB Terminology Discussion | RTCWEB WG Interim 8 Sep | | Page Discussion: Multi-Party RTP Sessions ›In the centralized conference usage a common RTP session needs to be supported –The RTP tools for centralized conferencing are built around a common session –The RTP session still exist in the context of only one PeerConnection from the end-point’s (A, B, C or D) view –A Mixer has a different view, but is after all a more advanced RTP entity RTP Session A Mixer BD C