[balnaphone]

This exists, just use https://github.com/sigoden/aichat with local ollama and a model like qwen2.5-coder:7b or better (e.g. gemma3:12b).

Add this to ~/.bashrc :

    # bind Alt-e on the command line to replace text with command
    _aichat_bash() {
        if [[ -n "$READLINE_LINE" ]]; then
            READLINE_LINE=$(aichat -e "$READLINE_LINE")
            READLINE_POINT=${#READLINE_LINE}
        fi
    }
    bind -x '"\ee": _aichat_bash'

In the example you gave i get:

    find . -type f -name "*.mp4" -exec ffmpeg -i {} -c:v libaom-av1 -crf 30 -b:v 0 -c:a copy ~/Videos/{}.mkv \;

But if you don't like that you can press Ctrl-Shift-_ (bash has emacs keybindings) to undo and try something else. You can also put a # mark in front and hit enter, then up arrow then Alt-e so you know what created the command.