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[youtube-dl] / youtube_dl / postprocessor / embedthumbnail.py

diff --git a/youtube_dl/postprocessor/embedthumbnail.py b/youtube_dl/postprocessor/embedthumbnail.py
index 774494efd1dbc9af1901bf67d1453689e846b780..2e4789eb220b1069f51c5e68a9b3ff76b7514c6d 100644 (file)
--- a/youtube_dl/postprocessor/embedthumbnail.py
+++ b/youtube_dl/postprocessor/embedthumbnail.py
@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-
+# coding: utf-8
 from __future__ import unicode_literals
 
 
@@ -35,7 +35,12 @@ class EmbedThumbnailPP(FFmpegPostProcessor):
 
         thumbnail_filename = info['thumbnails'][-1]['filename']
 
-        if info['ext'] == 'mp3':
+        if not os.path.exists(encodeFilename(thumbnail_filename)):
+            self._downloader.report_warning(
+                'Skipping embedding the thumbnail because the file is missing.')
+            return [], info
+
+        if info['ext'] in ('mp3', 'mkv'):
             options = [
                 '-c', 'copy', '-map', '0', '-map', '1',
                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']