[whatwg] [mimesniff] Handling container formats like Ogg

Henri Sivonen hsivonen at iki.fi
Tue Nov 27 01:39:02 PST 2012

On Tue, Nov 27, 2012 at 12:59 AM, Gordon P. Hemsley <gphemsley at gmail.com> wrote:
> Container formats like Ogg can be used to store many different audio
> and video formats, all of which can be identified generically as
> "application/ogg". Determining which individual format to use (which
> can be identified interchangeably as the slightly-less-generic
> "audio/ogg" or "video/ogg", or using a 'codecs' parameter, or using a
> dedicated media type) is much more complex, because they all use the
> same "OggS" signature. It would requiring actually attempting to parse
> the Ogg container to determine which audio or video format it is using
> (perhaps not unsimilar to what is done for MP4 video and what might
> have to be done with MP3 files without ID3 tags).
> Would this be something UAs would prefer to handle in their Ogg
> library, or should I spec it as part of sniffing?

What would be the use case for handling it as part of sniffing layer?

Henri Sivonen
hsivonen at iki.fi

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