When manually attaching a video link (from YouTube, Vimeo, etc) to a post using the Facebook web interface, Facebook automatically recognizes the link as a video, and allows the resulting status message to play the video inline. The video is displayed as an embedded player in the Wall or News feed.
Here's an example of what an embedded video looks like after posting manually.
When posting a link using the Graph API, the video is not embedded.
curl -F 'access_token=...' \
-F 'message=Link to YouTube' \
-F 'link=http://www.youtube.com/watch?v=3aICB2mUu2k' \
https://graph.facebook.com/me/feed
I suspect the answer is related to the source argument, but I'm not sure what the URL should be there. Specifying the same URL just leads to a post with no thumbnail image whatsoever.
source: A URL to a Flash movie or video file to be embedded within the post. read_stream.
How can the same embedded behavior be accomplished by using the Graph API alone?
It appears that you have to extract the URLs of the actual swf in the page and the thumbnail image yourself. For example, this seems to work:
curl -F 'access_token=...' \
-F 'message=Link to YouTube' \
-F 'link=http://www.youtube.com/watch?v=3aICB2mUu2k' \
-F 'source=http://www.youtube.com/v/3aICB2mUu2k' \
-F 'picture=http://img.youtube.com/vi/3aICB2mUu2k/0.jpg' \
https://graph.facebook.com/me/feed
It appears that you can generate a valid source and picture from the page URL. The URL looks like http://www.youtube.com/watch?v=<code>; take the code (3aICB2mUu2k here) and insert it into the URLs http://www.youtube.com/e/<code> for the source and and http://img.youtube.com/vi/<code>/0.jpg for the picture.
Here's how to post a video manually for YOUTUBE and VIMEO (hard to find online). Specifically if you want to have the LINK value pointing to a user's website/blog post where it originates.
//search for youtube.com and vimeo.com in the 'link' value
if (preg_match("/youtube.com/", $model->link) || preg_match("/youtu.be/", $model->link)){
if (preg_match('%(?:youtube\.com/(?:[^/]+/.+/|(?:v|e(?:mbed)?)/|.*[?&]v=)|youtu\.be/)([^"&?/ ]{11})%i', $model->link, $match))
{
$video_code = $match[1];
}
$source = 'http://www.youtube.com/e/'.$video_code;
$picture = 'http://img.youtube.com/vi/'.$video_code.'/0.jpg';
}
else if (preg_match("/vimeo.com/", $model->link))
{
if (preg_match('/vimeo\.com\/(clip\:)?(\d+).*$/', $model->link, $match))
{
$video_code = $match[2];
}
/* Get Vimeo thumbnail */
$hash = unserialize(file_get_contents("http://vimeo.com/api/v2/video/$video_code.php"));
$picture = $hash[0]['thumbnail_medium'];
$source = 'https://secure.vimeo.com/moogaloop.swf?clip_id='.$video_code.'&autoplay=1';
}
$args = array(
'message' => //user's comment
'name' => //Title of post
'link' => 'http://...'//link to video on user's website
'source' => $source,
'picture' => $picture,
);
if ($this->_facebook->api("/".$this->facebookUserID."/feed", "post", $args)){
//posted to facebook
}
Sharing as a link with /links instead of /feed seems to work better. YouTube, Vimeo, and Facebook videos are embedded as if posting manually.
curl -F 'access_token=...' \
-F 'message=Link to YouTube' \
-F 'link=http://www.youtube.com/watch?v=3aICB2mUu2k' \
https://graph.facebook.com/me/links
Don't use /feed, use /links (https://graph.facebook.com/me/links/ ) and simply POST "message" and "link" parameters using the YouTube /watch?v=ZL7nV7WwJKg URL format. /feed never worked for me, it just posted a static graphic and link but I wanted it to actually play embedded on Facebook as it does when you share the Video from YouTube to Facebook. Works like a charm.
It will not work for posting in GROUPS on /feeds or /links. See here. Please upvote the issue in order to be fixed sometime soon.
/links is a duplicate of the /feeds which only shows posts of type link posted by the user themselves.
Instead try posting the link as the message attribute, it works for me that way.
message = your message + link
Sharing using the API any .swf file or video wont show a thumbnail on facebook unless its youtube . And that is by design as per facebook. Check this link
来源：https://stackoverflow.com/questions/5227607/posting-an-embedded-video-link-using-the-facebook-graph-api