https://github.com/suzuki-shunsuke/asciinema-trim
Trim and change the playback speed of asciinema's session
https://github.com/suzuki-shunsuke/asciinema-trim
Last synced: 18 days ago
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Trim and change the playback speed of asciinema's session
- Host: GitHub
- URL: https://github.com/suzuki-shunsuke/asciinema-trim
- Owner: suzuki-shunsuke
- License: mit
- Created: 2021-12-18T05:33:52.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2025-04-18T01:00:26.000Z (20 days ago)
- Last Synced: 2025-04-18T14:34:17.954Z (19 days ago)
- Language: Go
- Homepage:
- Size: 592 KB
- Stars: 7
- Watchers: 3
- Forks: 0
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# asciinema-trim
Trim and change the playback speed of [asciinema](https://asciinema.org/)'s session
## Motivation
[asciinema](https://github.com/asciinema/asciinema) is an awesome project to record and share your terminal sessions.
After recoding the session, sometimes you would like to trim the session, or change the playback speed.
asciinema-trim is a CLI to trim the record file and change the playback speed.
## Install
* Homebrew
* [aqua](https://aquaproj.github.io/)
* [Download from GitHub Rleases](https://github.com/suzuki-shunsuke/asciinema-trim/releases)
```console
$ brew install suzuki-shunsuke/asciinema-trim/asciinema-trim
```
## Usage
```console
$ asciinema-trim
```
The trimmed record file is outputted to the standard output.
e.g.
```console
$ asciinema-trim input.cast > output.cast
```
## Example
### Trimming
input.cast
```
[1.000000, "o", "h"]
[2.000000, "o", "e"]
[4.500000, "o", "r"]
[7.000000, "o", "o"]
```
Insert `2` to trim 2 seconds.
```
[1.000000, "o", "h"]
[2.000000, "o", "e"]
2
[4.500000, "o", "r"]
[7.000000, "o", "o"]
```
Run asciiname-trim.
```
$ asciinema-trim input.cast > output.cast
```
Result
```
[1.000000, "o", "h"]
[2.000000, "o", "e"]
[2.500000, "o", "r"]
[5.000000, "o", "o"]
```
Float64 is also available.
```
[2.000000, "o", "e"]
1.5
[4.500000, "o", "r"]
```
### Change the speed
input.cast
```
[1.000000, "o", "a"]
[2.000000, "o", "b"]
[6.000000, "o", "c"]
[8.000000, "o", "d"]
[10.000000, "o", "e"]
```
Insert `*2` to set the playback speed to 2x.
```
[1.000000, "o", "a"]
[2.000000, "o", "b"]
*2
[6.000000, "o", "c"]
[8.000000, "o", "d"]
[10.000000, "o", "e"]
```
Run asciiname-trim.
```
$ asciinema-trim input.cast > output.cast
```
Result
```
[1.000000, "o", "a"]
[2.000000, "o", "b"]
[4.000000, "o", "c"]
[5.000000, "o", "d"]
[6.000000, "o", "e"]
```
Float64 is also available.
```
[2.000000, "o", "b"]
*1.5
[6.000000, "o", "c"]
```
When the playback speed is set multiple times, the playback speed is reset.
For example, when `*4` is set after `*2`, the playback speed is not 8x but 4x.
```
[1.000000, "o", "a"]
[2.000000, "o", "b"]
*2
[6.000000, "o", "c"]
[8.000000, "o", "d"]
*4
[10.000000, "o", "e"]
```
Result
```
[1.000000, "o", "a"]
[2.000000, "o", "b"]
[4.000000, "o", "c"]
[5.000000, "o", "d"]
[5.500000, "o", "e"]
```
## Release Note
[GitHub Releases](https://github.com/suzuki-shunsuke/asciinema-trim/releases)
## License
[MIT](LICENSE)