[utils] Recognize units with full names in parse_filename

Reference: https://en.wikipedia.org/wiki/Template:Quantities_of_bytes

ChangeLog

@@ -1,7 +1,9 @@
 version <unreleased>
 
 Core
-* Support m3u8 manifests in HTML5 multimedia tags
++ Recognize file size strings with full unit names (for example "8.5
+  megabytes")
++ Support m3u8 manifests in HTML5 multimedia tags
 * Fix js_to_json(): correct octal or hexadecimal number detection
 
 Extractors

test/test_utils.py

@@ -823,6 +823,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(parse_filesize('1.2tb'), 1200000000000)
         self.assertEqual(parse_filesize('1,24 KB'), 1240)
         self.assertEqual(parse_filesize('1,24 kb'), 1240)
+        self.assertEqual(parse_filesize('8.5 megabytes'), 8500000)
 
     def test_parse_count(self):
         self.assertEqual(parse_count(None), None)

youtube_dl/utils.py

@@ -1504,46 +1504,63 @@ def parse_filesize(s):
     _UNIT_TABLE = {
         'B': 1,
         'b': 1,
+        'bytes': 1,
         'KiB': 1024,
         'KB': 1000,
         'kB': 1024,
         'Kb': 1000,
         'kb': 1000,
+        'kilobytes': 1000,
+        'kibibytes': 1024,
         'MiB': 1024 ** 2,
         'MB': 1000 ** 2,
         'mB': 1024 ** 2,
         'Mb': 1000 ** 2,
         'mb': 1000 ** 2,
+        'megabytes': 1000 ** 2,
+        'mebibytes': 1024 ** 2,
         'GiB': 1024 ** 3,
         'GB': 1000 ** 3,
         'gB': 1024 ** 3,
         'Gb': 1000 ** 3,
         'gb': 1000 ** 3,
+        'gigabytes': 1000 ** 3,
+        'gibibytes': 1024 ** 3,
         'TiB': 1024 ** 4,
         'TB': 1000 ** 4,
         'tB': 1024 ** 4,
         'Tb': 1000 ** 4,
         'tb': 1000 ** 4,
+        'terabytes': 1000 ** 4,
+        'tebibytes': 1024 ** 4,
         'PiB': 1024 ** 5,
         'PB': 1000 ** 5,
         'pB': 1024 ** 5,
         'Pb': 1000 ** 5,
         'pb': 1000 ** 5,
+        'petabytes': 1000 ** 5,
+        'pebibytes': 1024 ** 5,
         'EiB': 1024 ** 6,
         'EB': 1000 ** 6,
         'eB': 1024 ** 6,
         'Eb': 1000 ** 6,
         'eb': 1000 ** 6,
+        'exabytes': 1000 ** 6,
+        'exbibytes': 1024 ** 6,
         'ZiB': 1024 ** 7,
         'ZB': 1000 ** 7,
         'zB': 1024 ** 7,
         'Zb': 1000 ** 7,
         'zb': 1000 ** 7,
+        'zettabytes': 1000 ** 7,
+        'zebibytes': 1024 ** 7,
         'YiB': 1024 ** 8,
         'YB': 1000 ** 8,
         'yB': 1024 ** 8,
         'Yb': 1000 ** 8,
         'yb': 1000 ** 8,
+        'yottabytes': 1000 ** 8,
+        'yobibytes': 1024 ** 8,
     }
 
     return lookup_unit_table(_UNIT_TABLE, s)