Python ≥3.6

ffmpeg

(install using pip install [packagename] from a terminal/command prompt):

google-api-python-client

requests

pysrt

progressbar2

six

captionstransformer

Install autosub + addsub by putting the autosub root folder in %ProgramFiles%, and adding %ProgramFiles%\autosub to your PATH.

To find the location of your %ProgramFiles% folder, open a command prompt and run echo %ProgramFiles%. Then, create a folder named autosub there (you will need to provide administrator permissions), and put the files from this repo there.

To add %ProgramFiles%\autosub to your PATH, right click on 'This PC' on your desktop, and select 'Properties'. On the left, select 'Advanced System Settings', and then 'Environment Variables'. On the lower panel, 'System variables', scroll down and find the entry for Path or PATH. Select that entry, and click 'Edit...'. On the right, click 'New', and type %ProgramFiles%\autosub (note the backslash!). Then click 'OK', 'OK', and 'OK' to exit the settings windows. You're done!

If you are on Windows, you can safely delete the .sh files. These are only used on Mac.

Install autosub + addsub by putting the autosub root folder in your Applications folder, and setting up the bash script aliases. Here's how to do this step by step.

First, create a folder named autosub in your Applications directory, and move the files inside the ZIP file you download from this repo there. Next, move the bash files to /usr/local/bin/. To do this, open a new Finder window, press Cmd+Shift+G, and enter /usr/local/bin/ in the pop-up that appears. Select the .sh files and press Cmd+C. Then click inside the /usr/local/bin/ window and press Cmd+V. (Do not just drag the files there, as this will create a shortcut and not actually copy them!) (You can now the delete them from the autosub folder if you want.)

Open a terminal window and enter cd /usr/local/bin/. Next, make the bash scripts executable. To do this, in the same terminal window, type sudo chmod +x autosub.sh and press enter. Then enter your password (no text will display while you enter your password, but it is working), and press enter. Then, do the same for addsub.sh: sudo chmod +x addsub.sh (you should not need to enter your password again).

Next, add aliases for the scripts. To do this, in the terminal window, type ln -s /usr/local/bin/autosub.sh /usr/local/bin/autosub and press enter. Then, do the same for addsub.sh (ln -s /usr/local/bin/addsub.sh /usr/local/bin/addsub and press enter). You're done!

If you are on Mac, you can safely delete the .bat files. These are only used on Windows.

autosub [source_path] [-C/--concurrency] [-o/--output] [-F/--format] [-S/--src_language] [-D/--dst-language] [-K/--api_key] [--list-formats] [--list-languages]

• source_path: the (relative or absolute) path to the video file you want to generate subtitles for. The default generates subtitles for every file with a .mov or .mp4 extension in the current directory. Unix-style wildcards are supported.
• -C/--concurrency: the number of concurrent API requests to make.
• -o/--output: the name of the output subtitle file(s). The default saves them in the same directory as the video and with the same name.
• -F/--format: the subtitle format. Default is .srt.
• -S/--src-language: the language spoken in the source video. Default is English.
• -D/--dst-language: the language to translate the subtitles to. Note that you will need to provide a Google Translate API key in order to use this functionality.
• -K/--api-key: a Google Translate API key to use. This is only needed if you are translating the subtitles.
• --list-formats: show all available subtitle formats.
• --list-languages: show all available source/destination languages.

addsub [-v/--video_file] [-o/--output_file] [-s/--subtitle_file] [-r/--rename] [-c/--color] [-si/--size] [-b/--border_style] [-af/--additional_formatting] [-se/--soft-embed] [-comp/--compression]

• -v/--video_file: the relative or absolute path(s) to the video file(s). Default is all files in the current directory that end in .mov or .mp4.
• -o/--output_file: where the save the output file(s) with the hard-coded subtitles. Default are the video file names + -subbed in .mp4 format.
• -s/--subtitle_file: the relative or absolute path(s) to the srt file(s). Default assumes that they have the same name as the video file(s) but with an .srt extension.
• -r/--rename: Whether to automatically rename files to avoid overwriting. The default prompts for whether to overwrite for each output file name that already exists.
• -c/--color: the color (in hex) to use for the subtitles. Default is ffffff (white).
• -si/--size: the font size to use for the subtitles in pt. Default is 24.
• -b/--border_style: the border style to use for the subtitles. Default is 3 (opaque box). 1 uses an outline + drop shadow.
• -af/--additional_formatting: Additional formatting to use for the subtitles, specified using SubStation Alpha style fields. Default is empty.
• -se/--soft_embed: Set this to soft-embed the subtitles instead of hard-embedding them, so that you can choose whether to display them and the formatting in the video playback software.
• -vc/--video_codec: Which video codec to use. Default is libx264. libx265 is also supported. No other codecs are currently supported.
• -comp/--compression: The compression factor to use for the output video. Default is 22. Lower numbers mean less compression/higher quality.

An srt file containing the recognized speech. The default will put this in the same directory as the video with the same file name but an .srt extension. This can be edited in any text editor to fix formatting (punctuation and capitalization) and word recognition errors.

A video file with hard-embedded or soft-embedded subtitles, depending on what options you set. The default hard-embeds the subtitles, and puts the resulting video(s) in the same directory as the original video(s), with the name [original_file_name]-subbed.mp4. Note that addsub currently works only with srt and sbv formats, and not json format (the other format supported by autosub). (sbv format can be downloaded from the captions automatically generated by YouTube.)

If you are soft-embedding subtitles, you may need to select the subtitle track manually in your video player; in particular, VLC requires this, and others may as well.