Working on a chunked video can result in a broken frame index the option -vsync 1...

diff --git a/lib/private/preview/movies.php b/lib/private/preview/movies.php
index 276209a876a68c4b2582edc49e2903fd154c5762..3cbbaa9d3bec5f11802802797ab3f4e9418c5bfc 100644 (file)
--- a/lib/private/preview/movies.php
+++ b/lib/private/preview/movies.php
@@ -52,7 +52,7 @@ if (!\OC_Util::runningOnWindows()) {
                                if (self::$avconvBinary) {
                                        $cmd = self::$avconvBinary . ' -an -y -ss 5'.
                                                ' -i ' . escapeshellarg($absPath) .
-                                               ' -f mjpeg -vframes 1 ' . escapeshellarg($tmpPath) .
+                                               ' -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) .
                                                ' > /dev/null 2>&1';
                                }
                                else {