[YoutubeDL] Improve protocol auto determining (closes #11720)

[youtube-dl] / youtube_dl / YoutubeDL.py

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 99825e343e1f731c0d3534c7a65fe6dfd6964b8c..41d9a63eece80eb40cf068d1be74608daab5097d 100755 (executable)
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -1339,7 +1339,7 @@ class YoutubeDL(object):
                 format['format_id'] = compat_str(i)
             else:
                 # Sanitize format_id from characters used in format selector expression
-                format['format_id'] = re.sub('[\s,/+\[\]()]', '_', format['format_id'])
+                format['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', format['format_id'])
             format_id = format['format_id']
             if format_id not in formats_dict:
                 formats_dict[format_id] = []
@@ -1363,7 +1363,7 @@ class YoutubeDL(object):
                 format['ext'] = determine_ext(format['url']).lower()
             # Automatically determine protocol if missing (useful for format
             # selection purposes)
-            if 'protocol' not in format:
+            if format.get('protocol') is None:
                 format['protocol'] = determine_protocol(format)
             # Add HTTP headers, so that external programs can use them from the
             # json output
@@ -1658,7 +1658,7 @@ class YoutubeDL(object):
                         video_ext, audio_ext = audio.get('ext'), video.get('ext')
                         if video_ext and audio_ext:
                             COMPATIBLE_EXTS = (
-                                ('mp3', 'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v'),
+                                ('mp3', 'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'ismv', 'isma'),
                                 ('webm')
                             )
                             for exts in COMPATIBLE_EXTS: