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WebRTC Codec Wars: Rebooted
Are we there yet?
September 2015
Tsahi Levent-Levi
10/9/2015 2
What should be the mandatory codec in WebRTC?
10/9/2015 3
10/9/2015 4
It’s already there. Google implemented it in Chrome. Everyone’s using it
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That’s what the industry knows and loves already
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Royalty free – no patent payments!
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Because… well… how do we interoperate? Oh – and Cisco just open sourced their implementation!
Both?
A decision was made NOT to decide
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Don’t worry -It gets worse
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Current situation
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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
Let’s talk video
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How should we measure a video codec?
• Error resilience?
• Patent costs?
• Hardware acceleration availability?
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H.261 H.263 H.264 H.265
Complexity
H.261 H.263 H.264 H.265
Bit rate
H.265 and royalties
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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
The battle over the next video codec
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H.261
H.263H.264
?
?
VP10
The battle over the next video codec
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H.261
H.263H.264
?
?
VP10
And then came the Alliance for Open Media
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H.261
H.263H.264
?HEVCH.265
VP8
VP9?
Who’s in the alliance?
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Who’s missing from the alliance?
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DLG Media
Who’s missing from the alliance?
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But where’s audio?
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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
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Codecs in WebRTC (and VoIP)
will continue being a headache
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Thank You!
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Tsahi Levent-Levi
https://bloggeek.me
