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-rw-r--r--youtube_dl/YoutubeDL.py10
1 files changed, 9 insertions, 1 deletions
diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index d40314ee5..a0ab89b3d 100644
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -908,6 +908,14 @@ class YoutubeDL(object):
if info_dict.get('requested_formats') is not None:
downloaded = []
success = True
+ merger = FFmpegMergerPP(self)
+ if not merger._get_executable():
+ postprocessors = []
+ self.report_warning('You have requested multiple '
+ 'formats but ffmpeg or avconv are not installed.'
+ ' The formats won\'t be merged')
+ else:
+ postprocessors = [merger]
for f in info_dict['requested_formats']:
new_info = dict(info_dict)
new_info.update(f)
@@ -916,7 +924,7 @@ class YoutubeDL(object):
downloaded.append(fname)
partial_success = dl(fname, new_info)
success = success and partial_success
- info_dict['__postprocessors'] = [FFmpegMergerPP(self)]
+ info_dict['__postprocessors'] = postprocessors
info_dict['__files_to_merge'] = downloaded
else:
# Just a single file