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WebRTC 1.0 sync: H.264 parameters #158

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aboba opened this Issue Oct 27, 2014 · 1 comment

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aboba commented Oct 27, 2014

For WebRTC 1.0, https://tools.ietf.org/html/draft-ietf-rtcweb-video Section 5.2 specifies the relevant parameters for H.264.

Within the ORTC API draft, Section 9.4.2.3 describes the supported H.264 parameters (max-recv-level and packetization-mode).

Rather than including its own set of parameters, the ORTC API should reference draft-ietf-rtcweb-video Section 5.2 and sync up with it.

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aboba commented Oct 29, 2014

The proposed revision is as follows:

9.4.2.3 H.264

The following capabilities are defined for H.264, as noted in [RFC6184] Section 8.1, and [RTCWEB-VIDEO] Section 5.2.

Property Name Values Notes
profile-level-id unsigned long
This parameter, defined in [RFC6184] Section 8.1, is mandatory to support, as noted in [RTCWEB-VIDEO] Section 5.2.

packetization-mode sequence
A sequence of unsigned shorts, each ranging from 0 to 2, indicating supported packetization-mode values. As noted in [RTCWEB-VIDEO] Section 5.2, support for packetization-mode 1 is mandatory.

max-mbps, max-smbps, max-fs, max-cpb, max-dpb, max-br unsigned long
As noted in [RTCWEB-VIDEO] Section 5.2, these optional parameters allow the implementation to specify that they can support certain features of H.264 at higher rates and values than those signalled with profile-level-id.

robin-raymond pushed a commit that referenced this issue Jan 22, 2015

Robin Raymond
Updated Section 8.3 to reflect proposed matching rules, reflecting:
#48

Update to the Statistics API, reflecting:
#85

Update on 'automatic' use of scalable video coding, as noted in:
#156

Update to the H.264 parameters, as noted in:
#158

Update to the 'Big Picture', as noted in:
#159

Added support for maxptime, as noted in:
#160

Changed 'RTCIceTransportEvent' to 'RTCIceGathererEvent' as noted in:
#161

Update to RTCRtpUnhandledEvent as noted in:
#163

Added support for RTCIceGatherer.state as noted in:
#164

Revised the text relating to RTCIceTransport.start() as noted in:
#166

Added text relating to DTLS interoperability with WebRTC 1.0, as noted in:
#167

Revised the text relating to RTCDtlsTransport.start() as noted in:
#168

Clarified handling of incoming connectivity checks by the RTCIceGatherer as noted in:
#170

Added a reference to the ICE consent specification, as noted in:
#171
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