From e0f1fb0a27612c2398df59dd85194edfdf8cbc2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sun, 23 Jul 2017 00:25:23 +0700
Subject: [PATCH] [mtv] Skip missing video parts (closes #13690)

---
 youtube_dl/extractor/mtv.py | 28 ++++++++++++++++++++++------
 youtube_dl/extractor/vh1.py | 12 ++++++++----
 2 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/youtube_dl/extractor/mtv.py b/youtube_dl/extractor/mtv.py
index 8acea1461..fc098cd13 100644
--- a/youtube_dl/extractor/mtv.py
+++ b/youtube_dl/extractor/mtv.py
@@ -83,7 +83,7 @@ class MTVServicesInfoExtractor(InfoExtractor):
                 hls_url = rendition.find('./src').text
                 formats.extend(self._extract_m3u8_formats(
                     hls_url, video_id, ext='mp4', entry_protocol='m3u8_native',
-                    m3u8_id='hls'))
+                    m3u8_id='hls', fatal=False))
             else:
                 # fms
                 try:
@@ -106,7 +106,8 @@ class MTVServicesInfoExtractor(InfoExtractor):
                     }])
                 except (KeyError, TypeError):
                     raise ExtractorError('Invalid rendition field.')
-        self._sort_formats(formats)
+        if formats:
+            self._sort_formats(formats)
         return formats
 
     def _extract_subtitles(self, mdoc, mtvn_id):
@@ -133,8 +134,11 @@ class MTVServicesInfoExtractor(InfoExtractor):
             mediagen_url += 'acceptMethods='
             mediagen_url += 'hls' if use_hls else 'fms'
 
-        mediagen_doc = self._download_xml(mediagen_url, video_id,
-                                          'Downloading video urls')
+        mediagen_doc = self._download_xml(
+            mediagen_url, video_id, 'Downloading video urls', fatal=False)
+
+        if mediagen_doc is False:
+            return None
 
         item = mediagen_doc.find('./video/item')
         if item is not None and item.get('type') == 'text':
@@ -174,6 +178,13 @@ class MTVServicesInfoExtractor(InfoExtractor):
 
         formats = self._extract_video_formats(mediagen_doc, mtvn_id, video_id)
 
+        # Some parts of complete video may be missing (e.g. missing Act 3 in
+        # http://www.southpark.de/alle-episoden/s14e01-sexual-healing)
+        if not formats:
+            return None
+
+        self._sort_formats(formats)
+
         return {
             'title': title,
             'formats': formats,
@@ -205,9 +216,14 @@ class MTVServicesInfoExtractor(InfoExtractor):
         title = xpath_text(idoc, './channel/title')
         description = xpath_text(idoc, './channel/description')
 
+        entries = []
+        for item in idoc.findall('.//item'):
+            info = self._get_video_info(item, use_hls)
+            if info:
+                entries.append(info)
+
         return self.playlist_result(
-            [self._get_video_info(item, use_hls) for item in idoc.findall('.//item')],
-            playlist_title=title, playlist_description=description)
+            entries, playlist_title=title, playlist_description=description)
 
     def _extract_triforce_mgid(self, webpage, data_zone=None, video_id=None):
         triforce_feed = self._parse_json(self._search_regex(
diff --git a/youtube_dl/extractor/vh1.py b/youtube_dl/extractor/vh1.py
index 6be3774b7..570fa45ea 100644
--- a/youtube_dl/extractor/vh1.py
+++ b/youtube_dl/extractor/vh1.py
@@ -121,7 +121,11 @@ class VH1IE(MTVIE):
         idoc = self._download_xml(
             doc_url, video_id,
             'Downloading info', transform_source=fix_xml_ampersands)
-        return self.playlist_result(
-            [self._get_video_info(item) for item in idoc.findall('.//item')],
-            playlist_id=video_id,
-        )
+
+        entries = []
+        for item in idoc.findall('.//item'):
+            info = self._get_video_info(item)
+            if info:
+                entries.append(info)
+
+        return self.playlist_result(entries, playlist_id=video_id)