Advancing through a recording / jumping to a position


I have just started using asciinema to help track down problems with overloading my Fedora Linux PC with three different browsers and many tabs in each window - this will mean very big files because it takes many hours / sometimes days (I leave my workstation on usually) of recording. So, I need to be able to jump say to the end of a recording but also to say a particular “frame” or position - maybe measured in % of the size of the recording file?

How easy / difficult would this be to implement? Learning Rust has been on my ToDo list for some years now - but doing what I want might not get done if I have to learn Rust first . .

Thanks for the nice software!