oEmbed: Support YouTube timestamps as hashes

[danielbachhuber]

YouTube can provide timestamps as a hash, which doesn't get properly processed by the oEmbed endpoint: https://www.youtube.com/watch?v=8A6q6eGM_Aw#t=8m30s

Converting the hash to a proper query argument produces the expected behavior: https://www.youtube.com/watch?v=8A6q6eGM_Aw&t=8m30s

Although it's a pain to maintain compatibility shims, including in core would reduce user confusion around oEmbed.

/**
 * Support YouTube timestamp as hash (e.g. https://www.youtube.com/watch?v=8A6q6eGM_Aw#t=8m30s)
 * by converting the hash to a query arg
 */
add_filter( 'oembed_fetch_url', function( $provider, $url, $args ) {
	if ( false === stripos( $provider, 'www.youtube.com/oembed' ) || false === stripos( $url, '#t=' ) ) {
		return $provider;
	}
	$url = str_replace( '#t=', '&t=', $url );
	$provider = add_query_arg( 'url', rawurlencode( $url ), $provider );
	return $provider;
}, 10, 3 );

[Viper007Bond]

Agreed. Helpers are annoying, but fixing this issue is worth it.

[swissspidy]

Perhaps other providers support this as well. I know that Vimeo supports that hash, but I think not the query param for embeds.

[peterwilsoncc]

Edge cases need to be dealt with, the first to come to mind is campaign tags and a time stamp:

https://www.youtube.com/watch?v=btPJPFnesV4#utm_source=cats&utm_medium=wordpress&utm_campaign=kittens&t=3s

I'll keep on the milestone for now as I'm working through a patch with a (hopefully soon) first contributor.