Re: [rtcweb] MTI Video Codec: a novel proposal
tim panton <tim@phonefromhere.com> Mon, 10 November 2014 10:29 UTC
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From: tim panton <tim@phonefromhere.com>
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Date: Mon, 10 Nov 2014 10:29:14 +0000
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To: Adam Roach <adam@nostrum.com>
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Subject: Re: [rtcweb] MTI Video Codec: a novel proposal
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Adam, thanks for sticking you head above the parapet ! I’m largely in favour of this solution, further, I think it represents the realities on the ground better than any other proposal to date, as such it merits support. On 10 Nov 2014, at 02:08, Adam Roach <adam@nostrum.com> wrote: > WebRTC devices MUST implement both VP8 and H.264. If compelling evidence arises that one of the codecs is available for use on a royalty-free basis, such as all IPR declarations known for the codec being of (IETF) Royalty-Free or (ISO) type 1, the IETF will change this normative statement to indicate that only that codec is required. For absolute, crystal clarity, this provision is only applicable to WebRTC devices, and not to WebRTC User Agents. I do have a slight qualm about the " ‘both’ or perhaps only ‘one’ “ language above. I think irrespective of new data, there will always be devices who’s hardware or business model is best served by a specific codec, but that can meet every other requirement of a webRTC device. I feel the appropriate language here is ‘either’ , ensuring that every device can always interact with a user agent but that devices can’t necessarily communicate video between each other without a transcoding middle man. This leaves WebRTC-compatible endpoint as a category for things that implement neither video codec (e.g. audio only devices), or don’t implement the data channel because it isn’t relevant to their application domain or only implement SDES (etc) - This gives a clearer separation. This language choice matters most for developers who are selecting a native library to use when building a webRTC device. They need to know what is supported - 'WebRTC-compatible’ means that they have to look very carefully at all the missing features, WebRTC-device says that it will work with any user agent. With the current formulation there are no libraries that I know of suitable for building a webRTC device, making it an empty category. Tim.
- [rtcweb] MTI Video Codec: a novel proposal Adam Roach
- Re: [rtcweb] MTI Video Codec: a novel proposal Lorenzo Miniero
- Re: [rtcweb] MTI Video Codec: a novel proposal Jonathan Rosenberg
- Re: [rtcweb] MTI Video Codec: a novel proposal Ron
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal DRAGE, Keith (Keith)
- Re: [rtcweb] MTI Video Codec: a novel proposal Bernard Aboba
- Re: [rtcweb] MTI Video Codec: a novel proposal Ron
- Re: [rtcweb] MTI Video Codec: a novel proposal tim panton
- Re: [rtcweb] MTI Video Codec: a novel proposal Daniel-Constantin Mierla
- Re: [rtcweb] MTI Video Codec: a novel proposal Timothy B. Terriberry
- Re: [rtcweb] MTI Video Codec: a novel proposal Cavigioli, Chris
- Re: [rtcweb] MTI Video Codec: a novel proposal Tim Panton
- Re: [rtcweb] MTI Video Codec: a novel proposal cowwoc
- Re: [rtcweb] MTI Video Codec: a novel proposal Daniel-Constantin Mierla
- Re: [rtcweb] MTI Video Codec: a novel proposal Cullen Jennings
- Re: [rtcweb] MTI Video Codec: a novel proposal Cavigioli, Chris
- Re: [rtcweb] MTI Video Codec: a novel proposal Stephan Wenger
- Re: [rtcweb] MTI Video Codec: a novel proposal Adam Roach
- Re: [rtcweb] MTI Video Codec: a novel proposal Justin Uberti
- Re: [rtcweb] MTI Video Codec: a novel proposal Eric Rescorla
- Re: [rtcweb] MTI Video Codec: a novel proposal Mary Barnes
- Re: [rtcweb] MTI Video Codec: a novel proposal Emil Ivov
- Re: [rtcweb] MTI Video Codec: a novel proposal Roman Shpount
- Re: [rtcweb] MTI Video Codec: a novel proposal Matthew Kaufman
- Re: [rtcweb] MTI Video Codec: a novel proposal Iñaki Baz Castillo
- Re: [rtcweb] MTI Video Codec: a novel proposal Matthew Kaufman
- Re: [rtcweb] MTI Video Codec: a novel proposal Iñaki Baz Castillo
- Re: [rtcweb] MTI Video Codec: a novel proposal Eric Rescorla
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal David Singer
- Re: [rtcweb] MTI Video Codec: a novel proposal Suhas Nandakumar
- Re: [rtcweb] MTI Video Codec: a novel proposal Bernard Aboba
- Re: [rtcweb] MTI Video Codec: a novel proposal Adam Roach
- Re: [rtcweb] MTI Video Codec: a novel proposal Tim Lindsey
- Re: [rtcweb] MTI Video Codec: a novel proposal Roman Shpount
- Re: [rtcweb] MTI Video Codec: a novel proposal Ron
- Re: [rtcweb] MTI Video Codec: a novel proposal David Singer
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal Justin Uberti
- Re: [rtcweb] MTI Video Codec: a novel proposal Bernard Aboba
- Re: [rtcweb] MTI Video Codec: a novel proposal Alexandre GOUAILLARD
- Re: [rtcweb] MTI Video Codec: a novel proposal Matthew Kaufman
- Re: [rtcweb] MTI Video Codec: a novel proposal Matthew Kaufman
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal Roman Shpount
- Re: [rtcweb] MTI Video Codec: a novel proposal Matthew Kaufman
- Re: [rtcweb] MTI Video Codec: a novel proposal Ron
- Re: [rtcweb] MTI Video Codec: a novel proposal Bernard Aboba
- Re: [rtcweb] MTI Video Codec: a novel proposal Victor Pascual Avila
- Re: [rtcweb] MTI Video Codec: a novel proposal Andrew Allen
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal Ron
- Re: [rtcweb] MTI Video Codec: a novel proposal Peter Saint-Andre - &yet
- Re: [rtcweb] MTI Video Codec: a novel proposal Martin Thomson
- Re: [rtcweb] MTI Video Codec: a novel proposal tim panton
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal Adam Roach
- Re: [rtcweb] MTI Video Codec: a novel proposal cowwoc
- Re: [rtcweb] MTI Video Codec: a novel proposal Iñaki Baz Castillo
- Re: [rtcweb] MTI Video Codec: a novel proposal Gaelle Martin-Cocher
- Re: [rtcweb] MTI Video Codec: a novel proposal Harald Alvestrand
- Re: [rtcweb] MTI Video Codec: a novel proposal cowwoc
- Re: [rtcweb] MTI Video Codec: a novel proposal stephane.proust
- Re: [rtcweb] MTI Video Codec: a novel proposal Randell Jesup
- Re: [rtcweb] MTI Video Codec: a novel proposal Gaelle Martin-Cocher
- Re: [rtcweb] MTI Video Codec: a novel proposal Shijun Sun
- Re: [rtcweb] MTI Video Codec: a novel proposal Florian Weimer