Let's imagine, you're ripping stuff & have missed something during the gameplay.
You don't need to play from the begining, or even from the savestate, you can REWIND & catch what you need.
There are 2 ways for it. One is more complicated & requires using the LUA script, that allows rewind. And another is rather simple, it is about using the inbuilt
TAS Edit tool of FCEUX. You either record a movie, load it for playback & the open TAS Edit, or you play in TAS Edit from the beginning, easily rewinding & playing around with layers.
To play in TAS Edit itself, you load your ROM, go to
Tools -
TAS Edit, pless
Q button (it allows you to record with you keyboard or gamepad) making movie Read+Write, & switching TAS Edit to
Recording mode. Then you shall unpause emulation. Pless
|| button in TAS Edit, or use the Pause hotkey (can be configured though
Config -
Map Hotkeys). If your input doesn't take any effect while the game is running, uncheck
Attach four-score in
Config -
Input. The rewind itself may be done by double-clicking on the frame number, that sends emulation to this frame, or by pressing
< button (frame by frame).
Video demo of how to use TAS Edit
http://www.youtube.com/watch?v=sAlV7dVtE_8PS: use the
latest build of FCEUX to have all necessary functions.