getting video dimensions

Question

when attaching videos (eg. .flv) to a post - is it possible to query its dimensions? the problem is - i've got videos in 4:3 and 16:9 format and i need to get this information.

any ideas?

thanks

Answer 1

php-flvinfo and php-mp4info are php classes for reading flv and mp4 metadata. you could read it on the fly, or it may be possible to hook a save to get this info in the db somewhere.

Answer 2

You would need a plugin to do this. It would need to parse the video and save the meta information.

I'd recommend taking a look at this library for starters: http://code.google.com/p/flv4php/

As for implementing this as a WordPress plugin, you would need to write a function and hook it to the wp_generate_attachment_metadata filter. The code will basically look something like this:

function my_attachment_metadata($meta, $attachment_id) {
  $attachment = get_post( $attachment_id );
  $mime = get_post_mime_type( $attachment );
  $file = get_attached_file( $attachment_id );
  // use the $mime value to determine if you need to scan the file (video/x-flv)
  // use the $file for scanning for any meta data
  // store the meta data in $meta['whatever'] for each piece of info
  return $meta;
}
add_filter('wp_generate_attachment_metadata','my_attachment_metadata',10,2);

Any meta data you add to $meta and return there will be stored along with the attachment post. You can then later retrieve it, without having to reparse the file or anything, with wp_get_attachment_metadata( $attachment_id ).

Answer 3

I don't use videos to test. My quick guess would be to try wp_get_attachment_metadata() function.