A wholistic RSS namespace for podcasting that is meant to synthesize the fragmented world of podcast namespaces. As elements are canonized, they will be added to this document so developers can begin implementation. The specifications below are considered locked and the team will prioritize backward compatibility. We are operating under the [Rules for Standards-Makers](http://scripting.com/2017/05/09/rulesForStandardsmakers.html).
The namespace for this extension is `https://podcastindex.org/namespace/1.0`. Clients which recognize this namespace must also recognize `https://github.com/Podcastindex-org/podcast-namespace/blob/main/docs/1.0.md` as identical. The suggested tag prefix for use in XML is `podcast`, but clients should support alternate prefixes for this namespace. If your application generates RSS feeds and you implement one or more elements below, you will need to link this DTD in your XML:
- **language (optional):** The language of the linked transcript. If there is no language attribute given, the linked file is assumed to be the same language that is specified by the RSS `<language>` element.
- **rel (optional):** If the rel="captions" attribute is present, the linked file is considered to be a closed captions file, regardless of what the mime type is. In that scenario, time codes are assumed to be present in the file in some capacity.
This tag may be set to `yes` or `no`. The purpose is to tell other podcast platforms whether they are allowed to import this feed. A value of `yes` means that any attempt to import this feed into a new platform should be rejected.
- **owner:** The owner attribute is an email address that can be used to verify ownership of this feed during move and import operations. This could be a public email or a virtual email address at the hosting provider that redirects to the owner's true email address. This is a critical element, and it's expected that podcast hosting providers (if not providing virtual addresses) will allow setting this element's value in their GUI with an emphasis to their users of how important it is to have this be a valid, working email address.
Links to an external file (see example file) containing chapter data for the episode. See the [jsonChapters.md](https://github.com/Podcastindex-org/podcast-namespace/blob/main/chapters/jsonChapters.md) file for a description of the chapter file syntax. And, see the [example.json](https://github.com/Podcastindex-org/podcast-namespace/blob/main/chapters/example.json) example file for a real world example.
Points to one or more soundbites within a podcast episode. The intended use includes episodes previews, discoverability, audiogram generation, episode highlights, etc. It should be assumed that the audio/video source of the soundbite is the audio/video given in the item's `<enclosure>` element.
This element specifies a person of interest to the podcast. It is primarily intended to identify people like hosts, co-hosts and guests. Although, it is flexible enough to allow fuller credits to be given using the roles and groups that are listed in the [Podcast Taxonomy Project](https://podcasttaxonomy.com/)
#### Parent
`<item>`
#### Count
Multiple
#### Node value (required)
This is the full name or alias of the person.
#### Attributes
- **role:** (optional) Used to identify what role the person serves on the show or episode. This should be a reference to an official role within the Podcast Taxonomy Project list (see below). If `role` is missing then "host" is assumed.
- **group:** (optional) This should be a camel-cased, alphanumeric reference to an official group within the Podcast Taxonomy Project list. If `group` is not present, then "cast" is assumed.
- **img:** (optional) This is the url of a picture or avatar of the person.
- **href:** (optional) The url to a relevant resource of information about the person, such as a homepage or third-party profile platform. Please see the [example feed](example.xml) for possible choices of what to use here.
The maximum recommended string length of each attribute value, and the tag's node value is 128 characters.
The `role` and `group` tags are case-insensitive. So, "Host" is the same as "host".
The full taxonomy list is [here](taxonomy.json) as a json file.
