The Unicode characters in these lines are 'RIGHT-TO-LEFT EMBEDDING'
(code \u202b) and 'POP DIRECTIONAL FORMATTING' (code \u202c) -
these are used in the text to indicate that the included text should be rendered
right-to-left instead of the ocidental left-to-right direction.
Now, these characters are included as hints to the application displaying the text, rather than to actually perform the text reversing - so they likely can be removed without compromising the text displaying itself.
Now this a programing Q&A site, but you did not indicate any programming language you are familiar with - enough for at least running a program. So it is very hard to know how give an answer that is suitable to you.
Python can be used to create a small program to filter such characters from a file, but I am not willing to write a full fledged GUI program, or an web app that you could run there just as an answer here.
A program that can work from the command line just to filter out a few characters is another thing - as it is just a few lines of code.
You have to store the follwing listing as a file named, say "fixsubtitles.py" there, and, with a terminal ("cmd" if you are on Windows) type python3 fixsubtitles.py \path\to\subtitlefile.txt and press enter.
That, of course, after installing Python3 runtime from http://python.org
(if you are on Mac or Linux that is already pre-installed)
import sys
from pathlib import Path
encoding = "utf-8"
remove_set = str.maketrans("\u202b\u202c")
if len(sys.argv < 2):
print("Usage: python3 fixsubtitles.py [filename]", file=sys.stderr)
exit(1)
path = Path(sys.argv[1])
data = path.read_text(encoding=encoding)
path.write_text(data.translate("", "", remove_set), encoding=encoding)
print("Done")
You may need to adjust the encoding - as Windows not always use utf-8 (the files can be in, for example "cp1256" - if you get an unicode error when running the program try using this in place of "utf-8") , and maybe add more characters to the set of characters to be removed - the tool you linked in the question should show you other such characters if any. Other than that, the program above should work
