From a5e8106b7aedbc1160dc39e01fb12d6d250796e1 Mon Sep 17 00:00:00 2001
From: Stefan Brand <seiichiro@seiichiro0185.org>
Date: Sat, 9 Dec 2023 09:52:46 +0100
Subject: [PATCH] Initial Video Thumbnail Support

---
 README.md            |  2 +-
 lib/thumbs.class.php | 16 +++++++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 2f9962d..423a90f 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ DISCLAIMER: This was just quickly hacked together, it might not be up to any qua
 
 Copy conf/config.sample.php to config.php and edit accordingly.
 
-A webserver with PHP (tested with 7.4 and 8.0) support and the php-gd and php-exif extensions (for thumbnails) is required. An example config for nginx with php-fpm might look something like this:
+A webserver with PHP (tested with 7.4 and 8.0) support and the php-gd and php-exif extensions (for image thumbnails) and installed ffmpeg (for video thumbnails) is required. An example config for nginx with php-fpm might look something like this:
 
     worker_processes  4;
 
diff --git a/lib/thumbs.class.php b/lib/thumbs.class.php
index c8b3bee..804514a 100644
--- a/lib/thumbs.class.php
+++ b/lib/thumbs.class.php
@@ -8,6 +8,9 @@ class thumb {
   protected int $w = 200;
   protected int $h = 200;
 
+  protected string $ffmpeg_cmd = '/usr/bin/ffmpeg'
+  protected string $ffprobe_cmd = '/usr/bin/ffprobe';
+
   const IMAGE_HANDLERS = [
     IMAGETYPE_JPEG => [
         'load' => 'imagecreatefromjpeg',
@@ -39,7 +42,18 @@ class thumb {
     if (!file_exists($dstpath)) {
       
       if(str_starts_with(mime_content_type($src), 'video/')) {
-        return "img/video.png";
+        $cmd = $this->ffprobe_cmd.' -i "'.$src.'" -show_entries format=duration -v quiet -of csv="p=0"';
+        exec($cmd, $output, $retval);
+        $seconds = ($output[0]*10) / 100;
+
+        $cmd = $this->ffmpeg_cmd.' -i "'.$src.'" -an -ss '.$seconds.' -t 00:00:01 -vf scale=w='.$this->w.':h='.$this->h.':force_original_aspect_ratio=decrease -r 1 -y -vcodec mjpeg -f mjpeg '.$dstpath.' 2>&1';
+        exec($cmd, $output, $retval);
+
+        if ($retval) {
+          return "img/video.png";
+        } else {
+          return $this->thumburl.$dstname.'.jpg';
+        }
       }
 
       $type  = exif_imagetype($src);