Standalone binary for running Aegisub automations from the command line.

aegisub-cli [options] <input file> <output file> <macro>
Options:
  --help                  produce help message
  --video arg             video to load
  --timecodes arg         timecodes to load
  --keyframes arg         keyframes to load
  --automation arg        an automation script to run
  --active-line arg (=-1) the active line
  --selected-lines arg    the selected lines
  --dialog arg            response to a dialog, in JSON
  --file arg              filename to supply to an open/save call
  --loglevel arg (=3)     0 = exception; 1 = assert; 2 = warning; 3 = info; 4 =
                          debug

Examples:

aegisub-cli --dialog '{"button": 0, "values": {"stripComments": true}}' --video premux.mkv --automation l0.ASSWipe.moon script_in.ass script_out.ass ASSWipe

aegisub-cli --selected-lines 0-5,10,15-20 --automation lyger.GradientByChar.lua script_in.ass script_out.ass "Gradient by characte/Apply Gradient"

You can navigate automations that show dialogs using the --dialog option. --dialog takes a JSON object with two keys: button and values. button is an integer specifying which button in the dialog to push, starting at 0. values is a JSON object consisting of control name/value pairs, for specifying values of text fields, checkboxes, and so on.

Valid values include:

• Float controls: A float such as 0.1
• Integer controls: An integer such as 42
• Color controls: An integer array of length 3 or 4, such as [50, 100, 250, 20], in the order R, G, B, A
• Checkbox controls: A boolean value, either true or false
• Others: A string such as "hello"

The control names are the names supplied to aegisub.dialog. Refer to the source code of the automation or the debug output printed by aegisub-cli when run with --loglevel 4 to find the correct names.

Install Meson and Ninja (e.g. using pip for Python 3), as well as development libraries for ICU, Boost and FFMS2, and run

$ meson --prefix=/usr --buildtype=release builddir
$ ninja -C builddir src/aegisub-cli

The prefix should be set to the same prefix as your main Aegisub installation, as this is where Aegisub CLI will search for automation modules. Note however that you do not need to install the actual binary itself to the same directory.

Install Visual Studio 2019, Python 3, Meson and Ninja, open the x64 Native Tools Command Prompt for VS 2019, run

$ meson -Ddefault_library=static -Dlocal_boost=true --buildtype=release builddir
$ ninja -C builddir src/aegisub-cli.exe

and sit tight. Meson will download and build the required dependencies, including ICU, Boost and FFmpeg, so compilation will take a while.

You can generate a Visual Studio 2019 project using

$ meson -Ddefault_library=static -Dlocal_boost=true --buildtype=debugoptimized --backend vs2019 builddir

You can then import the solution generated in builddir. Note that you cannot use --buildtype=debug as FFmpeg will fail to compile without optimizations.

There are pre-built binaries for Windows available from the releases section. Simply place aegisub-cli.exe in the same directory as your main Aegisub executable and add the directory to your PATH.