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asciinema-scenario

★ 61 Open GitHub ↗

Create asciinema videos from a text file. Write a scenario for your - asciinema - video and generate it.

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# asciinema-scenario

[![CI](https://github.com/garbas/asciinema-scenario/actions/workflows/ci.yml/badge.svg)](https://github.com/garbas/asciinema-scenario/actions/workflows/ci.yml)

Create asciinema videos from a text file.

Have you ever re-record your asciinema video over and over again to hit perfect
speed and avoid making typos? I did, too many times and this is why I wrote
this tool.

## Installation

If you have [Nix](https://nixos.org/download.html) installed, then issue
`nix-build`, and the `asciinema-scenario` executable will be available in
`./result/bin/`.

```text
$ nix-build
$ result/bin/asciinema-scenario
```

## Usage

![asciinema-scenario](https://raw.githubusercontent.com/garbas/asciinema-scenario/master/example/demo.gif)

## How to write a .scenario file?

* If first line starts with `#!` it must be followed by JSON object. The object
  can include:

| Name | Type | Default | Description |
    | --- | --- | --- | --- |
    | step | float | 0.10 | A time in seconds of typing speed of a single event. |
    | width | int | 77 | Maximum number of characters in one line. |
    | height | int | 20 | Number of lines of the video |

* Empty lines will add timeout of `3 x step`.

* Lines starting with `#timeout: 1.5` will create a 1.5 second timeout. When
  custom timeout is needed select the timeout you need.

* Lines starting with `#` will be skipped and can serve as comments.

* Lines starting with `$ ` will be typed out one character at the time with 
  `step` timeout in between. Every character after `#` will be brighter.

* Lines starting with "(nix-shell) $ " will be typed out with `(nix-shell) `
  in green color.

* Lines starting with "--" will clear the screen. A timeout of `18 * step` will
  be there before the terminal screen clears.

* Everything else will be displayed immediately.

## Tips

* To immediately display a shell command line example (instead of having it
  being typed out as the default behaviour), precede `$` with a [zero-width
  space](https://en.wikipedia.org/wiki/Zero-width_space)

* To quickly play back the scenario you are working on (or any for that
  matter), use

```text
  $ asciinema-scenario my.scenario | asciinema play -
  # or
  $ asciinema play <(asciinema-scenario my.scenario)
  ```

## Releases

Detailed release notes are available in this repo at [CHANGES.md](CHANGES.md).

## Reporting issues

Found a bug? I'd love to know about it!

Please report all issues on the GitHub [issue
tracker](https://github.com/garbas/asciinema-scenario/issues).

## License

Licensed under either of these:

* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
   https://www.apache.org/licenses/LICENSE-2.0)
 * MIT license ([LICENSE-MIT](LICENSE-MIT) or
   https://opensource.org/licenses/MIT)

asciinema-scenario

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