How to publish
data element with either integer number of seconds or ISO 8601 duration in the
value attribute, and any human-readable representation you choose in the contents. Example:
<data class="p-duration" value="PT1H7M59S">1h 8m</data>
granary converts podcast h-feeds and h-entries to RSS with enclosures, including iTunes extension elements.
It reads episode duration from the
length mf2 properties, and supports both integer seconds and ISO 8601 duration values. It emits the
duration mf2 property with integer seconds value. Background discussion.