ikiwiki/doc/todo/fancypodcast.mdwn

## Status

[[!template id=gitbranch branch=schmonz/fancypodcast author="[[schmonz]]"]]
[[!tag patch]]

Nothing new since 2013/07/21 [[merge|done]] to `master`.

## Features

[[!table data="""
Feature            |iTunes RSS|iTunes Atom|Downcast RSS|Downcast Atom
Feed image         |          |           |            |
Feed title         |(./)      |(./)       |(./)        |(./)
Feed publisher     |          |           |            |
Feed "category"    |          |           |            |
Feed date          |(./)      |(./)       |(./)        |(./)
Feed description   |(./)      |(./)       |(./)        |
Episode image      |          |           |            |
Episode title      |(./)      |(./)       |(./)        |(./)
Episode date       |(./)      |(./)       |(./)        |(./)
Episode duration   |          |           |            |
Episode author     |          |           |            |
Episode description|(./)      |(./)       |(./)        |
Episode enclosure  |(./)      |(./)       |(./)        |(./)
"""]]

## Future improvements

### Embedded audio/video player in browsers

* For a given enclosure, depending on autodetected MIME:
    * `audio/*` -> `<audio>`
    * `video/*` -> `<video>`
* For a given template:
    * `page.tmpl` -> eagerly fetch media
    * `inlinepage.tmpl` -> fetch just enough to display durations
* Only for HTML5 sites, or also okay for XHTML?
* Does this work well enough in enough browsers, or do we need a
  JavaScript player to fill in some gaps?

### iTunes fancy podcasting

* [iTunes-specific tags](https://www.apple.com/itunes/podcasts/specs.html)
  appear to be RSS-only
    * Can we always include them in RSS feeds, or would that break
      some feed readers?
    * Is it even valid to include them in Atom feeds? If so, do
      Atom podcasts look any better in podcatchers?
    * Avoid adding a third kind of feed (`itunesrss`), or options
      to the existing `rss` and `atom` feeds, unless we have to.
* Notable tags for feeds:
    * `itunes:subtitle`
    * `itunes:author`
    * `itunes:summary` (same as `description`)
    * `itunes:owner` (includes `itunes:name` and `itunes:email`)
    * `itunes:image href=''`
    * `itunes:publisher`
    * `itunes:category text=''` (can contain subcategories)
    * `itunes:keywords`
* Notable tags for entries:
    * `itunes:duration`
        * [[!cpan Audio::TagLib]] might be fastest, if present and applicable
        * [ffprobe](http://ffmpeg.org/ffprobe.html) is reasonably fast
        * [mediainfo](http://mediainfo.sourceforge.net/) is way slower
        * Cache computed durations as pagestate
* [Podcast Feed Best
  Practice](https://github.com/gpodder/podcast-feed-best-practice/blob/master/podcast-feed-best-practice.md)
  from the gPodder folks

### Fancy podcast aggregating

* Write tests comparing a fancy podcast (HTML and feeds) against
  the same podcast aggregated and republished, then make them pass
  via changes to `aggregatepost.impl` and [[plugins/aggregate]].

### Other ideas

* Optionally specify the enclosure's:
    * MIME type, in case `File::MimeInfo` guesses wrong.
    * Duration, in case `ffprobe` guesses wrong.
* Optionally specify enclosures outside the wiki:
    * Some people don't want to store big unchanging files in the VCS.
    * Other people like [podcasting found media](http://huffduffer.com/about).
    * We'd have to download the file just to compute some metadata
      about it, and then somehow not frequently re-download it.
* Configurably generate additional subscription links (such as
  iTunes) alongside the RSS/Atom ones in [[plugins/inline]].
* Support Apple's "enhanced podcasts" (if they're still relevant).