fix ffmpeg

stream_video.php

@@ -86,18 +86,25 @@ if (isset($_SERVER['HTTP_RANGE'])) {
         }
         $length = $end - $start + 1;
         http_response_code(206); // Partial Content
+        header("Content-Range: bytes $start-$end/$file_size");
+    } else {
+        http_response_code(200);
     }
 } else {
     http_response_code(200);
 }
 
+// Pulisci output buffer per evitare corruzione
+if (ob_get_level()) {
+    ob_end_clean();
+}
+
 // Invia header
 header("Content-Type: $mime_type");
 header("Accept-Ranges: bytes");
 header("Content-Length: $length");
-header("Content-Range: bytes $start-$end/$file_size");
 
-// Header per impedire il download e la cache aggressiva
+// Header per impedire il download
 header("Content-Disposition: inline; filename=\"video.{$extension}\"");
 header("X-Content-Type-Options: nosniff");
 
@@ -105,16 +112,37 @@ header("X-Content-Type-Options: nosniff");
 header("Cache-Control: public, max-age=3600");
 header("Pragma: public");
 
+// Disabilita compressione per lo streaming
+header("Content-Encoding: none");
+
 // Apri e leggi il file
 $fp = fopen($file, 'rb');
+if ($fp === false) {
+    http_response_code(500);
+    exit('Impossibile aprire il file video');
+}
+
 fseek($fp, $start);
 
-$buffer = 1024 * 8; // 8KB buffer
-while (!feof($fp) && ($pos = ftell($fp)) <= $end) {
-    if ($pos + $buffer > $end) {
-        $buffer = $end - $pos + 1;
+// Buffer più grande per migliore performance
+$buffer = 1024 * 256; // 256KB buffer
+$bytes_sent = 0;
+
+while (!feof($fp) && ($bytes_sent < $length) && connection_status() == 0) {
+    $bytes_to_read = min($buffer, $length - $bytes_sent);
+    $data = fread($fp, $bytes_to_read);
+    
+    if ($data === false) {
+        break;
+    }
+    
+    echo $data;
+    $bytes_sent += strlen($data);
+    
+    // Forza l'invio dei dati al browser
+    if (ob_get_level() > 0) {
+        ob_flush();
     }
-    echo fread($fp, $buffer);
     flush();
 }