[wp-trac] [WordPress Trac] #64105: TinyMCE in classic editor does not support modern video formats

[WordPress Trac]

#64105: TinyMCE in classic editor does not support modern video formats
---------------------------+--------------------------------------------
 Reporter:  blackstar1991  |       Owner:  (none)
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  Awaiting Review
Component:  General        |     Version:  6.8.3
 Severity:  normal         |  Resolution:
 Keywords:  needs-patch    |     Focuses:  ui, accessibility, javascript
---------------------------+--------------------------------------------
Changes (by nabilaminhridoy):

 * keywords:   => needs-patch
 * focuses:  ui, accessibility => ui, accessibility, javascript
 * version:   => 6.8.3


Comment:

 Hi there 👋

 I’ve tested this issue on the latest **WordPress 6.8.3** with the
 **Classic Editor plugin (v1.6.3)** and can confirm that the problem still
 exists.

 When trying to insert `.webp` or `.avi` files via the “Add Media” modal in
 TinyMCE, the files are not recognized or previewed correctly.
 Meanwhile, the Block Editor supports `.webp` uploads and displays them as
 expected.

 This seems to be related to the allowed MIME types or TinyMCE’s media
 plugin configuration in the Classic Editor integration.

 Steps to reproduce:
 1. Activate the Classic Editor plugin.
 2. Go to “Posts → Add New”.
 3. Click “Add Media” and try uploading a `.webp` or `.avi` file.
 4. The file is rejected or not displayed in the editor.

 Expected:
 The Classic Editor should handle `.webp` and modern video formats similar
 to the Block Editor.

 If needed, I can help test or submit a patch for this.

 @nabilaminhridoy

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Ticket URL: <https://core.trac.wordpress.org/ticket/64105#comment:1>
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