EM CAP Profiles SC

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  • 1.  mimeType encoding

    Posted 05-28-2009 20:24
    Hi,
    	I'm submitting some language for the mimeType format IPAWS profile comments.  Not sure if its the direction the group decided on, or if it over-reaches, I don't know, but something to start with.
    
    "The Profiles SC has identified several concerns regarding the encoding of EAS broadcast content based on public review feedback.  Proprietary encoding formats necessitating licencing being included in an open standard, the burden placed on implementers of supporting multiple encoding formats for a single media type, and the concern about the authoritativeness of multiple encoding formats present in the same message are all important considerations.  The Profiles SC has determined that one mimeType for each media type (eg. audio) should be established with the selection of that media's encoding format, preferably a non-proprietary one, being an implementation decision by the IPAWS program office in consultation with the ECIG."
    
    -- 
    jake@jpw.biz
    --
    


  • 2.  Re: [emergency-cap-profiles] mimeType encoding

    Posted 05-28-2009 20:51
    I'd suggest the following substitute for the last sentence:  "The Profiles SC recommends that a single format should be selected for each media type (eg. audio) and delivery format (file or streaming) and that encodings available under open licenses be given preference over proprietary formats.  In particular the Profiles SC suggests the 'speex' and 'theora' encodings developed by the Xiph.Org Foundation for consideration.  The MIME types 'x-ipaws-audio', 'x-ipaws-streaming-audio', 'x-ipaws-video' and 'x-ipaws-streaming-video' should be used to designate the selected encodings."
    
    I'm not sure it's up to us to specify who should make that choice or by what process.  But I do think it might be prudent to offer a constructive suggestion.
    
    - Art
    
    
    Art Botterell, Manager
    Community Warning System
    Contra Costa County Office of the Sheriff
    50 Glacier Drive
    Martinez, California 94553
    (925) 313-9603
    fax (925) 646-1120
    
    >>> Jacob Westfall 


  • 3.  Re: [emergency-cap-profiles] mimeType encoding

    Posted 05-29-2009 13:33
    Hi,
    	Art's wording changes for the comment response to mimeType are fine with me.  The profile normative section would also need to be updated to reflect the changes as well.  Either a short blurb like I've included below, or maybe something for each type individually..
    
    The MIME types "audio/x-ipaws-audio", "audio/x-ipaws-streaming-audio", "video/x-ipaws-video" and "video/x-ipaws-streaming-video" SHALL be used to identify broadcast content for delivery to the public.
    
    -- 
    jake@jpw.biz
    --
    


  • 4.  Re: [emergency-cap-profiles] mimeType encoding

    Posted 05-29-2009 00:13
    Thanks Jacob,
    
    Much appreciated.
    
    Cheers,
    Rex
    
    At 4:21 PM -0400 5/28/09, Jacob Westfall wrote:
    >Hi,
    >	I'm submitting some language for the mimeType format IPAWS 
    >profile comments.  Not sure if its the direction the group decided 
    >on, or if it over-reaches, I don't know, but something to start with.
    >
    >"The Profiles SC has identified several concerns regarding the 
    >encoding of EAS broadcast content based on public review feedback. 
    >Proprietary encoding formats necessitating licencing being included 
    >in an open standard, the burden placed on implementers of supporting 
    >multiple encoding formats for a single media type, and the concern 
    >about the authoritativeness of multiple encoding formats present in 
    >the same message are all important considerations.  The Profiles SC 
    >has determined that one mimeType for each media type (eg. audio) 
    >should be established with the selection of that media's encoding 
    >format, preferably a non-proprietary one, being an implementation 
    >decision by the IPAWS program office in consultation with the ECIG."
    >
    >--
    >jake@jpw.biz
    >--
    >
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    -- 
    Rex Brooks
    President, CEO
    Starbourne Communications Design
    GeoAddress: 1361-A Addison
    Berkeley, CA 94702
    Tel: 510-898-0670