WebRTC Codec Wars: Rebooted
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The document discusses the ongoing challenges and debates surrounding mandatory codecs in WebRTC, highlighting the industry's preference for royalty-free options such as Opus and VP8. It outlines the complexities of video codec comparisons, noting various implementations and the financial implications tied to codecs like H.264. The piece concludes that audio codec advancements have stalled, potentially complicating future interoperability in WebRTC and VoIP systems.
WebRTC Codec Wars: Rebooted
- 1. WebRTC Codec Wars: Rebooted Are we there yet? September 2015 Tsahi Levent-Levi
- 2. 10/9/2015 2
- 3. What should be the mandatory codec in WebRTC? 10/9/2015 3
- 4. 10/9/2015 4 It’s already there. Google implemented it in Chrome. Everyone’s using it
- 5. 10/9/2015 5 That’s what the industry knows and loves already
- 6. 10/9/2015 6 Royalty free – no patent payments!
- 7. 10/9/2015 7 Because… well… how do we interoperate? Oh – and Cisco just open sourced their implementation!
- 8. Both? A decision was made NOT to decide 10/9/2015 8
- 9. Don’t worry - It gets worse 10/9/2015 9
- 10. Current situation 10/9/2015 10 Audio Video G.711, Opus VP8, VP9, H.264 G.711, Opus VP8, H.264 G.711, G.722, Opus H.264 AAC-ELD H.264 / H.265 G.711, Opus VP8, H.264
- 11. Let’s talk video 10/9/2015 11
- 12. How should we measure a video codec? • Error resilience? • Patent costs? • Hardware acceleration availability? 10/9/2015 12 H.261 H.263 H.264 H.265 Complexity H.261 H.263 H.264 H.265 Bit rate
- 13. H.265 and royalties 10/9/2015 13 Apple, BBC, ETRI, Fujitsu, Hitachi, HUMAX, IBEX PT, Infobridge, Intellectual Discovery, JVC KENWOOD, KAIST, KBS, KT, M&K, NEC, NEWRACOM, NHK, NTT, NTT DOCOMO, Orange SA, Samsung, Siemens, SK Planet, SK Telecom, Tagivan II, Vidyo, 6 universities GE, Technicolor, Dolby, Philips, and Mitsubishi Electric $0.2 per unit $0.8 per mobile implementation None 0.5% of content owners attributable gross revenue
- 14. The battle over the next video codec 10/9/2015 14 H.261 H.263 H.264 ? ? VP10
- 15. The battle over the next video codec 10/9/2015 15 H.261 H.263 H.264 ? ? VP10
- 16. And then came the Alliance for Open Media 10/9/2015 16 H.261 H.263 H.264 ? HEVC H.265 VP8 VP9 ?
- 17. Who’s in the alliance? 10/9/2015 17
- 18. Who’s missing from the alliance? 10/9/2015 18 DLG Media
- 19. Who’s missing from the alliance? 10/9/2015 19
- 20. But where’s audio? 10/9/2015 20
- 21. We have Opus but… • No real energy spent there in the past year • There’s little in the way of hardware acceleration • No “What’s next” for audio 10/9/2015 21
- 22. Codecs in WebRTC (and VoIP) will continue being a headache 10/9/2015 22
- 23. Thank You! 10/9/2015 23 Tsahi Levent-Levi https://bloggeek.me tsahil@bloggeek.me