[wp-trac] [WordPress Trac] #40464: Embed video in Wordpress gives W3c Markup Validation issue

[WordPress Trac]

#40464: Embed video in Wordpress gives W3c Markup Validation issue
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 Reporter:  pmbaldha      |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Embeds        |     Version:  4.4
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Changes (by swissspidy):

 * version:  4.7.3 => 4.4
 * component:  General => Embeds


Comment:

 Hey there,

 Thanks for your report and welcome to Trac!

 Although the `frameborder` attribute is not supported by HTML5, browsers
 do still support it. For broader compatibility, the embed HTML being used
 by WordPress (see `get_post_embed_html()`) includes that attribute.

 If we'd remove it, we certainly need to make sure there are no visual
 regressions.

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Ticket URL: <https://core.trac.wordpress.org/ticket/40464#comment:1>
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