Fixed UnicodeDecodeError (#1316)

* Update image.py

use encoding="utf8", in line303, 413, 524, 803, 1459
fix UnicodeDecodeError: 'cp950' codec can't decode byte 0x83 in position 52: illegal multibyte sequence

* Update image.py

fix : ValueError: binary mode doesn't take an encoding argument

---------

Co-authored-by: Ching-Yuan Huang <47504492+che610369@users.noreply.github.com>

lib/image.py

@@ -800,7 +800,7 @@ def count_frames(filename, fast=False):
     process = subprocess.Popen(cmd,
                                stderr=subprocess.STDOUT,
                                stdout=subprocess.PIPE,
-                               universal_newlines=True)
+                               universal_newlines=True, encoding="utf8")
     pbar = None
     duration = None
     init_tqdm = False