3 * GNU social - a federating social network
5 * Plugin to make thumbnails of video files with ffmpeg/avconv
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Mikael Nordfeldth <mmn@hethane.se>
25 * @copyright 2014 Free Software Foundation http://fsf.org
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link https://www.gnu.org/software/social/
30 if (!defined('GNUSOCIAL')) { exit(1); }
34 * ffmpeg/avconv (external program call)
38 * Make sure we support ffmpeg too, so we're not super Debian oriented.
40 * Video support will depend on your ffmpeg/avconv.
43 class VideoThumbnailsPlugin extends Plugin
46 * This function should only extract an image from the video stream
47 * and disregard any cropping or scaling in the resulting file, as
48 * that will be handled in the core thumbnail algorithm.
50 public function onCreateFileImageThumbnailSource(File $file, &$imgPath, $media=null)
52 // The calling function might accidentally pass application/ogg videos.
53 // If that's a problem, let's fix it in the calling function.
54 if ($media !== 'video' || empty($file->filename)) {
59 // Exception thrown if no thumbnail found
60 $thumb = File_thumbnail::byFile($file, false);
61 $imgPath = $thumb->getPath();
62 // If getPath didn't throw an exception, we have a working locally stored thumbnail
64 } catch (NoResultException $e) {
65 // Alright, no thumbnail found, so let's create one.
66 } catch (InvalidFilenameException $e) {
67 // I guess this means $thumb->filename is null? Shouldn't happen because $file->filename is not null, so delete it
69 } catch (FileNotFoundException $e) {
70 // Thumb file was not found, let's delete it.
74 // Let's save our frame to a temporary file. If we fail, remove it.
75 $tmp_imgPath = tempnam(sys_get_temp_dir(), 'socialthumb-');
78 if (shell_exec('which ffmpeg')) {
80 } elseif (shell_exec('which avconv')) {
83 common_log(LOG_ERR, 'Neither ffmpeg nor avconv was found in your PATH. Cannot create video thumbnail.');
86 $fullcmd = $cmd.' -y -i '.escapeshellarg($file->getPath()).' -vcodec mjpeg -vframes 1 -f image2 -an '.escapeshellarg($tmp_imgPath);
87 common_debug(__METHOD__ . ' executing: '._ve($fullcmd));
88 $result = exec($fullcmd);
90 if (!getimagesize($tmp_imgPath)) {
91 common_debug('exec of "avconv" produced a bad/nonexisting image it seems');
92 @unlink($tmp_imgPath);
95 $imgPath = $tmp_imgPath;
99 public function onPluginVersion(array &$versions)
101 $versions[] = array('name' => 'Video Thumbnails',
102 'version' => GNUSOCIAL_VERSION,
103 'author' => 'Mikael Nordfeldth',
104 'homepage' => 'https://www.gnu.org/software/social/',
106 // TRANS: Plugin description.
107 _m('Video thumbnail preview support.'));