Add av1 codec feature support

[bsriramprasad]

This is PR is a feature proposal to add ONVIF configuration and streaming support for AV1 encoded video.

Introduction

This specification extends the ONVIF Media2 configuration and Streaming framework to support video streams encoded using the AV1 codec. AV1 is a modern video coding format developed by the Alliance for Open Media that provides improved
compression efficiency compared to earlier codecs.

The transport of AV1 video over RTP shall follow the RTP Payload Format for AV1 Video specification. Unless otherwise specified, the RTP transport behavior defined in this specification remains applicable.

The additions in this document describe the signaling, synchronization behavior, and RTP payload considerations required to support AV1 video streams within the ONVIF streaming architecture.

Changes description

Thanks to Media2, there is an existing structure that makes adding this enhancement relatively simple.

Specifications affected/updated

• Media 2
  • Mime type
  • Codec 'profile' level added
• Streaming
  • RTP header spec reference for AV1

[kieran242]

@bsriramprasad approved. There was some points I agreed with @bjornvolcker but it did not see them as blocking points.

[ocampana-videotec]

Yesterday AOMedia announces the final specs for AV2.

Is there anything we may be willing to consider for this PR? I mean, given that there will be AV2, is there any spec that can be more friendly with these new specs? Probably not, but maybe it is worth checking...