update for rename of recentchanges.mdwn to json.tl.ph.mdwn

[git.ikiwiki.info.git] / doc / todo / fancypodcast.mdwn

diff --git a/doc/todo/fancypodcast.mdwn b/doc/todo/fancypodcast.mdwn
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--- a/doc/todo/fancypodcast.mdwn
+++ b/doc/todo/fancypodcast.mdwn
@@ -1,62 +1,88 @@
-ikiwiki's simple podcasting, while elegant and minimal, doesn't (as
-mentioned in [[todo/blogging]]) produce full-featured feeds. In
-fancy podcasts, episodes are accompanied by text content. The feeds
-also have lots more metadata.
+## Status

 
 

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

 
 

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

 
 

-7. For each fancy podcast episode, write a blog post containing
-   `\[[!meta enclosure="WikiLink/to/media.mp3"]]`. (Don't specify
-   more than one enclosure -- but if you do, last one wins.)
-7. When rendering to HTML (single-page or inlined), append a link
-   to the media file.
-7. When rendering to RSS/Atom, the text is the entry's content and
-   the media file is its enclosure.
-7. Don't break simple podcasts in pursuit of fancy podcasts.
+## Features

 
 

-## Implementation
+[[!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  |(./)      |(./)       |(./)        |(./)
+"""]]

 
 

-[[!template id=gitbranch branch=schmonz/fancypodcast author="[[schmonz]]"]]
+## 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

 
 

-### Completed
-
-* Cover the existing simple podcast behavior with tests.
-* Add an `enclosure` field to [[plugins/meta]] that expands the
-  given [[ikiwiki/WikiLink]] to an absolute URL (feed enclosures
-  pretty much need to be, and the reference feeds I've looked at
-  all do this).
-* Write failing tests for the desired single-page and inlined
-  HTML behavior, then make them pass by adding enclosure stanzas
-  to `{,inline}page.tmpl`.
-
-### Must-have (for [[schmonz]], anyway)
-
-* Write failing tests for the desired RSS/Atom behavior, then make
-  them pass, probably via changes to `{atom,rss}item.tmpl` and
-  [[plugins/inline]].
-* Enrich podcast feed metadata (some of which is iTunes-specific,
-  though I'm not aware of it causing any problems for other
-  podcatchers, and in fact some of them may also use it).
-* Subscribe to a fancy feed in some common podcatchers and compare
-  display details against a reference podcast.
-* Compare feature-for-feature and feed-for-feed with
-  [tru_podcast](http://www.rainskit.com/blog/542/tru_podcast-a-podcasting-plugin-for-textpattern),
-  which is what [[schmonz]] will be migrating from.
-* Think carefully about...
-    * UTF-8.
-    * Other templates with `CONTENT` and whether they want to learn
-      about `ENCLOSURE` (maybe `aggregatepost.tmpl`?).
-    * Whether [[tips/howto avoid flooding aggregators]] suffices for
-      migrating a fancy podcast into ikiwiki.
-* Verify that the feeds validate.
-* Verify that _all_ the tests pass (not just my new ones).
-
-### Nice-to-have
-
-* Let the enclosure's MIME type be specified, in case someone ever
-  needs to disagree with `File::MimeInfo`.
-* Extend [[plugins/inline]] to configurably generate additional
-  subscription links (such as iTunes) alongside the RSS/Atom ones.
-* Verify that [[plugins/more]] plays well with fancy podcasts.
+* 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).