[wp-trac] [WordPress Trac] #40921: Inconsistent Handling of mp4 by Audio Widget

[WordPress Trac]

#40921: Inconsistent Handling of mp4 by Audio Widget
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 Reporter:  toddhalfpenny                             |       Owner:
     Type:  defect (bug)                              |      Status:  new
 Priority:  normal                                    |   Milestone:  4.9
Component:  Media                                     |     Version:  3.6
 Severity:  normal                                    |  Resolution:
 Keywords:  2nd-opinion dev-feedback has-screenshots  |     Focuses:
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Comment (by mikeschroder):

 Agreed @blobfolio @westonruter -- WordPress assumes an extension can be
 either audio or video, but not both.
 This means strange things are going to happen if an extension is allowed
 as both.

 One example that seems to cause the symptom @blobfolio noted:
 https://developer.wordpress.org/reference/functions/wp_attachment_is/
 Specifically, https://core.trac.wordpress.org/browser/tags/4.8/src/wp-
 includes/post.php#L5215 defaults to audio over video when checking what an
 attachment is, solely based on what the extension is.

 I definitely think we should fix it, but will need to also handle it in
 terms of detecting media types more accurately on upload, rather than only
 adding types that might be either to the audio or video extension lists.

 In the meantime, it's not ideal, but folks should be able to work around
 this by renaming `.mp4` audio files to `.m4a` before upload. I tested, and
 this works for the example file above, [attachment:WhatsApp Audio
 2017-05-14 at 12.58.14.mp4].

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Ticket URL: <https://core.trac.wordpress.org/ticket/40921#comment:25>
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