Trim and change the playback speed of asciinema's session
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.
- Homebrew
- aqua
- Download from GitHub Rleases
$ brew install suzuki-shunsuke/asciinema-trim/asciinema-trim$ asciinema-trim <input file>The trimmed record file is outputted to the standard output.
e.g.
$ asciinema-trim input.cast > output.castinput.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"]
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"]