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MUP (Marked Up Podcast) Specs
From a technical perspective, MUP content is just some extra XML tags under the mup namespace in an RSS item description.
Here's a working list of tags, still very much under construction:
| xml tag | description |
|---|---|
| mup:ad | Advertisement info |
| mup:link | HTML link to related content |
| mup:img | Image to display |
| mup:sms | Text message to prep |
All MUP tags should have the following attributes:
| attribute | description |
|---|---|
| start | Time to start displaying content. In mm:ss format. |
| stop | Time to stop displaying content. In mm:ss format. |
Each of the following is optional but recommended for mup:ad tags. A mup:ad tag may also contain other MUP tags (e.g. mup:img) inside it.
| attribute | description |
|---|---|
| href | HTML link to advertiser site |
| title | Header text for the ad |
| img | URL to image |
| width | px or % |
| height | px or % |
| podcast | Reference id for podcast displaying this ad |
| support | Comma-delimited string of reference ids to acknowledge tech or other support linking to this ad |
A mup:link tag must contain an href attribute. The body of the link tag should be either text or a mup:img tag. Links with empty bodies may not be displayed.
| attribute | description |
|---|---|
| href | URL of linked site |
A mup:img tag must contain a src attribute. Other attributes are optional but recommended.
| attribute | description |
|---|---|
| src | HTML link to image file for display |
| alt | Alternate text to display for the image |
| height | Recommended image height in pixels |
| width | Recommended image width in pixels |
The SMS URI scheme allows websites to prep a text message with a recipient and body, and native iOS and Android apps have similar functionality.
The URI takes the format sms:+15105550101?body=hello%20there, (or possibly sms:+15105550101;body=hello%20there on iOS).
The mup:sms attribute allows similar functionality, and requires the following attributes. Like mup:link tags, the body of the SMS tag should be either text or a mup:img tag. SMS tags with empty bodies may not be displayed.
| attribute | description |
|---|---|
| to | String of the SMS number to text |
| body | Content of the SMS message |
The following is a sample item from a MUP RSS feed, based on the iTunes example.
<item>
<title>Shake Shake Shake Your Spices</title>
<itunes:author>John Doe</itunes:author>
<itunes:subtitle>A short primer on table spices</itunes:subtitle>
<itunes:summary><![CDATA[This week we talk about <a href="https://itunes/apple.com/us/book/antique-trader-salt-pepper/id429691295?mt=11">salt and pepper shakers</a>, comparing and contrasting pour rates, construction materials, and overall aesthetics. Come and join the party!]]</itunes:summary>
<itunes:image href="http://example.com/podcasts/everything/AllAboutEverything/Episode1.jpg" />
<enclosure url="http://example.com/podcasts/everything/AllAboutEverythingEpisode3.m4a" length="8727310" type="audio/x-m4a" />
<guid>http://example.com/podcasts/archive/aae20140615.m4a</guid>
<pubDate>Wed, 15 Jun 2014 19:00:00 GMT</pubDate>
<itunes:duration>7:04</itunes:duration>
<mup:ad start="2:03" stop="2:23" href="http://www.tastefulspice.com" title="Tasteful Spice" podcast="AllAboutEverything" support="FooProduction,BarDesign">
<mup:img start="2:03" stop="2:23" src="http://www.tastefulspice.com/salt.jpg" alt="A pinch of salt" height="150" width="150" />
</mup:ad>
<mup:link start="3:15" stop="4:00" href="http://example.com/podcasts/everything/AllAboutEverything/list.html">Our shopping list</mup:link>
<mup:sms start="6:30" stop="7:04" to="54321" body="donate">Donate $10 now!</mup:sms>
</item>