java视频转换

视频上传以转为FLV格式为宜，以下收藏了部分网上代码，以记录一下:

public class ConvertVideo {

	private static String INPUT_PATH;
	private static String OUTPUT_PATH;
	private static String PROJECT_PATH;
	private static HashMap<String, String> fileType;

	static {
		fileType = new HashMap<String, String>();
		fileType.put("avi", "true");
		fileType.put("mpg", "true");
		fileType.put("wmv", "true");
		fileType.put("3gp", "true");
		fileType.put("mov", "true");
		fileType.put("mp4", "true");
		fileType.put("asf", "true");
		fileType.put("asx", "true");
		fileType.put("flv", "true");
	}

	public static void convertToFLV(String projectPath, String inputFile,
			String outputFile) {
		INPUT_PATH = inputFile;
		OUTPUT_PATH = outputFile;
		PROJECT_PATH = projectPath;
		if (checkContentType())
			processFLV();// 直接将文件转为flv文件
	}

	private static boolean checkContentType() {
		String type = INPUT_PATH.substring(INPUT_PATH.lastIndexOf(".") + 1,
				INPUT_PATH.length()).toLowerCase();
		// ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等）
		return "true".equals(fileType.get(type));
	}

	private static void processFLV() {
		if (new File(INPUT_PATH).isFile()) {
			try {
				String cmd = "cmd /c start X:\\ffmpeg.bat \"" + PROJECT_PATH
						+ "\" \"" + INPUT_PATH + "\" \"" + OUTPUT_PATH + "\"";
				Runtime.getRuntime().exec(cmd);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
   /**
    * @Title: processFLV
    * @Description: 视频转换
    * @param @param ffmpegpath
    * @param @param inputpath
    * @param @param outputpath
    * @param @return  参数
    * @return boolean 返回
    * @throws
    */
	public static boolean processFLV(String ffmpegpath, String inputpath,
			String outputpath) {

		List<String> commend = new java.util.ArrayList<String>();
		commend.add(ffmpegpath);
		commend.add("-i");
		commend.add(inputpath);
		commend.add("-y");
		commend.add("-ab");
		commend.add("56");
		commend.add("-ar");
		commend.add("22050");
		commend.add("-r");
		commend.add("15");
		commend.add("-s");
		commend.add("300*200");
		commend.add(outputpath);
		try {
			ProcessBuilder builder = new ProcessBuilder();
			builder.command(commend);
			builder.start();
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}
	/**
	* @Title: processDVImage
	* @Description: 视频截图
	* @param @return    参数
	* @return boolean    返回
	* @throws
	*/
	public static boolean processDVImage(String ffmpegpath, String inputpath,
			String outputpath)
	{
		List<String> commend = new java.util.ArrayList<String>();
		commend.add(ffmpegpath);
		commend.add("-i");
		commend.add(inputpath);
		commend.add("-y");
		commend.add("-f");
		commend.add("image2");
		commend.add("-ss");
		commend.add("8");
		commend.add("-t");
		commend.add("0.001");
		commend.add("-s");
		commend.add("350x240");
		commend.add(outputpath);
		try {
			ProcessBuilder builder = new ProcessBuilder();
			builder.command(commend);
			builder.start();
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	

}