I need help to strip out the start of screen demo

[rnag]

Description

demo link:
https://asciinema.org/a/483363

This might be a bit of a stupid thing, but I need help to strip out the first few seconds (~5 seconds or so) from the start, where it shows as session restored. I tried with asciinema-edit but couldn't get it to work on my side (using mac). In case curious, I open an issue in the linked project.

For now my setting on asciinema.org are to set idle_time_limit=1.0 but that's not ideal as it speeds up commands in general. so I just want to know how can i strip out first few seconds from the start (and maybe last second or too too). thx ~

What I Did

trying with asciinema-edit (anyone else have this problem btw?)

$ cat ~/Downloads/483363.cast | asciinema-edit cut  --start=0.0 --end=5.0 
failed to transform cast: couldn't find initial frame