视频预览

app/Console/Commands/GeneratePreviewVideo.php

@@ -131,6 +131,7 @@ class GeneratePreviewVideo extends Command
         return "https://mietublcom.oss-cn-hongkong.aliyuncs.com".'/'.$url;
     }
 
+    /*
 
     public function generatePreview($inputUrl, $outputPath) {
         $ffmpeg = FFMpeg::create([
@@ -150,6 +151,44 @@ class GeneratePreviewVideo extends Command
         $format->setAdditionalParameters(['-an']);  // 禁用音频，或者可以用 setAdditionalParameters(['-an'])
         $video->save($format, $outputPath);
         return $outputPath;
+    }*/
+
+    public function generatePreview($inputUrl, $outputPath) {
+        $ffmpeg = FFMpeg::create([
+            'ffmpeg.binaries'  => '/usr/bin/ffmpeg',
+            'ffprobe.binaries' => '/usr/bin/ffprobe',
+            'timeout' => 300
+        ]);
+
+        // Open the video
+        $video = $ffmpeg->open($inputUrl);
+
+        // Use ffprobe to get original video dimensions
+        $ffprobe = \FFMpeg\FFProbe::create(['ffprobe.binaries' => '/usr/bin/ffprobe']);
+        $stream = $ffprobe->streams($inputUrl)->videos()->first();
+        $originalWidth = $stream->getDimensions()->getWidth();
+        $originalHeight = $stream->getDimensions()->getHeight();
+
+        // Calculate adaptive height for a fixed width of 300
+        $newWidth = 300;
+        $newHeight = (int) round(($originalHeight / $originalWidth) * $newWidth);
+
+        // Ensure dimensions are even (required by H.264)
+        $newHeight = $newHeight % 2 === 0 ? $newHeight : $newHeight + 1;
+
+        // Apply filters
+        $video->filters()->clip(TimeCode::fromSeconds(0), TimeCode::fromSeconds($this->timeSecond));
+        $video->filters()->framerate(new \FFMpeg\Coordinate\FrameRate(15), 60); // Lower frame rate
+        $video->filters()->resize(new \FFMpeg\Coordinate\Dimension($newWidth, $newHeight)); // Adaptive resize
+
+        // Output as H.264 encoded MP4
+        $format = new \FFMpeg\Format\Video\X264();
+        //$format->setKiloBitrate(200); // Set video bitrate (kbps)
+        $format->setAdditionalParameters(['-an']); // Disable audio
+
+        // Save the video
+        $video->save($format, $outputPath);
+        return $outputPath;
     }