nodes/seconds_to_frames_node.py

class SecondsToFrames:
    """Convert seconds to frame count for video generation nodes."""

    @classmethod
    def INPUT_TYPES(cls):
        return {
            "required": {
                "seconds": ("FLOAT", {
                    "default": 5.0,
                    "min": 0.1,
                    "max": 3600.0,
                    "step": 0.1,
                    "display": "number"
                }),
                "fps": ("INT", {
                    "default": 24,
                    "min": 1,
                    "max": 120,
                    "step": 1,
                    "display": "number"
                }),
                "extra_frame": ("BOOLEAN", {
                    "default": True,
                    "label_on": "yes (+1)",
                    "label_off": "no"
                }),
            }
        }

    RETURN_TYPES = ("INT", "FLOAT", "INT",)
    RETURN_NAMES = ("number of frames", "fps (float)", "fps (int)",)
    FUNCTION = "convert"
    CATEGORY = "utils"

    def convert(self, seconds, fps, extra_frame):
        frames = int(seconds * fps) + (1 if extra_frame else 0)
        return (frames, float(fps), fps,)


NODE_CLASS_MAPPINGS = {
    "SecondsToFrames": SecondsToFrames
}

NODE_DISPLAY_NAME_MAPPINGS = {
    "SecondsToFrames": "Seconds to Frames"
}