Renders Unity Camera.main to png images.

SaveFrames.cs

using UnityEngine;
using System.Collections;
using System;

public class SaveFrames : MonoBehaviour {

	public bool saveFrames = false;

	public bool saveFrameHotKey = false;

	public string folderPrefix = "frames_out";

	public int frameRate = 25;

	public int frameSizeMultiplier = 1;	


	private string nowTime;

	private string fullFolderName;


	void Start() {

		nowTime = String.Format("{0:yyyyMMdd_HHmmss}", DateTime.Now);

		fullFolderName = String.Format("{0}_{1}", folderPrefix, nowTime);

		Time.captureFramerate = frameRate;

		System.IO.Directory.CreateDirectory(fullFolderName);

	}

	void LateUpdate() {

		if (saveFrames || (saveFrameHotKey && Input.GetKey(KeyCode.S))) {

			string name = String.Format("{0}/frame_{1:D04}.png", fullFolderName, Time.frameCount);

			Application.CaptureScreenshot(name, frameSizeMultiplier);

		}

	}
}