Re: [rtcweb] Video codec selection - way forward

Thomas Reisinger <treising75@gmail.com> Sun, 17 November 2013 20:13 UTC

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From: Thomas Reisinger <treising75@gmail.com>
Date: Sun, 17 Nov 2013 21:13:07 +0100
To: Maik Merten <maikmerten@googlemail.com>
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Video codec selection - way forward
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Hi,

Instead of h.261, I would recommend h.263 as a common base.

Cheers,

Thomas 
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> On 17 Nov 2013, at 20:54, Maik Merten <maikmerten@googlemail.com>; wrote:
> 
> Hello,
> 
> just wondering if something like
> 
> "9. All entities SHOULD support both H.264 and VP8. All entities MUST at least implement one of those. Entities that do not support both H.264 and VP8 MUST implement H.261."
> 
> has already popped up. My reasoning is that implementations supporting both high performance codecs will always negotiate to use on of those - H.261 should never be relevant there.
> 
> It appears that all implementors are willing to implement either H.264 or VP8 (but not necessarily both). This obviously means that negotiation failure regarding a high-performance codec is a possiblity. In this case H.261 is actually useful so that basic video calls can still be established (for instance, I guess deaf people may always appreciate a video connection, as long as sign language can be transmitted).
> 
> 
> Maik
> 
> 
> Am 14.11.2013 12:37, schrieb Jeremy Fuller:
>> Hi,
>> Gaining IETF consensus on making it mandatory to support only H.264 or
>> only VP8 has clearly failed. I would welcome anyone to share their
>> thoughts on why they believe this situation will change anytime in the
>> next few years.  Therefore, can I suggest that we remove items 1 and 2
>> from the list. Hopefully this will speed up the process by focusing
>> efforts towards gaining agreement on one of the remaining options.
>> The following alternatives has been proposed:
>> 
>> 1. All entities MUST support H.264
>> 2. All entities MUST support VP8
>> 3. All entities MUST support both H.264 and VP8
>> 4. Browsers MUST support both H.264 and VP8, other entities MUST
>>    support at least one of H.264 and VP8
>> 5. All entities MUST support at least one of H.264 and VP8
>> 6. All entities MUST support H.261
>> 7. There is no MTI video codec
>> 8. All entities MUST support H.261 and all entities MUST support at
>>    least one of H.264 and VP8
>> 
>> Regards,
>> Jeremy Fuller
>> 
>> 
>> _______________________________________________
>> rtcweb mailing list
>> rtcweb@ietf.org
>> https://www.ietf.org/mailman/listinfo/rtcweb
>> 
> 
>