Not sure specifically what you need, but i’d suggest starting with a look at wp-includes/class-oembed.php
You’ll also find references to the embed class in wp-includes/media.php.
Hope that helps nudge you in the right direction… 🙂
Thread Starter
saphod
(@saphod)
Hi t31os_,
I think pointing me to the wp-includes/class-oembed.php was a really good idea… in line 261f (WP 3.0), it says:
// You can use this filter to add support for custom data types or to filter the result
return apply_filters( 'oembed_dataparse', $return, $data, $url );
I’d just have to use the add_filter()-function with oembed_dataparse. It appears to me as if $data contains the embed code. I’d just need to add some text before to leave the little note, like $data = "(note....) " . $data, but the problem is that I just want to do that in a feed. Maybe, I can check with is_feed() if a post or a feed is delivered?!
I found something similar in the support forums:
http://ww.wp.xz.cn/support/topic/412206
But there is another filter in class_oembed.php on line 99 as I just found out:
return apply_filters( 'oembed_result', $this->data2html( $data, $url ), $url, $args );
Could I use that, too, and if so, how?
Thread Starter
saphod
(@saphod)
Correction:
In class-oembed.php, it says for the function data2html()(which provides the oembed_dataparse filter) on line 233:
* @return bool|string False on error, otherwise the HTML needed to embed.
So, my solution could be something like this, right?
function add_video_embed_note($return, $data, $url) {
/* Do nothing if an error occured while parsing */
if(!$return) return false;
/* Add note if it is a video in a feed */
if(is_feed() && $data->$type=='video') {
$note_to_add = "<p><small>There should be an embedded flash video visible below.<br />If it does not show in your feed reader, please visit the original post to view it.</small></p>";
$return = $note_to_add . $return;
}
/* Return the result */
return $return;
}
add_filter('oembed_dataparse', 'add_video_embed_note', 10, 3);
Hmm… could it really be that simple? I have to try that out within the next days – could be turned into a little plugin… unfortunately, I have no time at the moment. Fortunately, I have written down the code here so I will remember. 😉
I’d say try it and see.. 😉
Let me know how you get on..
Thread Starter
saphod
(@saphod)
OK, I’ve tried it, but it doesn’t work. :’-(
Actually, it has to be $data->type instead of $data->$type, I reckon, but that doesn’t make a difference, anyway.
Even if I leave the if-clause out (which leads to the result that the note should ALWAYS be shown, not only in a feed and not only with a video)… the content will not change – THERE IS NO NOTE!
What am I missing?
Once again:
I use the “auto embed”-function, which means that I only put the YouTube-URL on its own on a single line – I do NOT use the [embed]-shortcode… but it should be the same, shouldn’t it?
I also tried to use a class as suggested here:
http://ww.wp.xz.cn/support/topic/412206
No note.
Does anyone know what’s wrong with my code?
Thread Starter
saphod
(@saphod)
After some searching, I found a different filter to use:
embed_oembed_html in wp-includes/media.php.
Since it does not provide a $data-object to check wether it is a video or an image, I had to use the strpos-function to see if the generated html uses the embed-tags.
And here is the actual working code:
function add_video_embed_note($html, $url, $attr) {
if (is_feed() && strpos($html, "<embed src=" ) !== false) {
return $note_to_add = "<p><small>There should be an embedded flash video visible below.<br />If it does not show in your feed reader, please visit the original post to view it.</small></p>" . $html;
} else {
return $html;
}
}
add_filter('embed_oembed_html', 'add_video_embed_note', 10, 3);
You can download a plugin here:
http://www.saphod.net/2010/07/06/auto-embedded-videos-and-rss-feeds/
I need to get a title above an embedded youtube video. Is this possible? Can anyone help me? I tried what nootron said to do on http://ww.wp.xz.cn/support/topic/filter-hook-for-built-in-oembed-providers-eg-youtube but it didn’t work. Where do I put that code?
-Thank you!
