ffmpeg视频转码相关

获取视频时长

//    Duration: 00:00:30.03, start: 0.000000, bitrate: 1191 kb/spublic String getVideoDuration(String inputFilePath) {Process process = null;try {// 定义远程视频的URL// 构建FFmpeg命令ProcessBuilder processBuilder = new ProcessBuilder(ffmpegPath, "-i",inputFilePath);// 读取FFmpeg的输出信息// 创建ProcessBuilder并执行命令processBuilder.redirectErrorStream(true);process = processBuilder.start();// 读取FFmpeg命令输出BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));String line;while ((line = reader.readLine()) != null) {if (line.contains("Duration:")) {// 获取包含视频时长信息的行String durationLine = line.split("Duration:")[1].split(",")[0].split("\\.")[0].trim();// 00:00:30
//                    String durationLine = line.split("Duration:")[1].split(",")[0].trim();// 00:00:30.03
//                    String[] durationParts = durationLine.split(":");
//                    int hours = Integer.parseInt(durationParts[0].trim());
//                    int minutes = Integer.parseInt(durationParts[1].trim());
//                    double seconds = Double.parseDouble(durationParts[2].trim());
//                    // 计算总秒数
//                    double totalSeconds = hours * 3600 + minutes * 60 + seconds;System.out.println("视频时长：" + durationLine);return durationLine;}}reader.close();} catch (IOException e) {e.printStackTrace();if (process != null) {process.destroyForcibly();  // 如果发生异常，强制终止进程}} finally {if (process != null) {process.destroyForcibly();  // 强制终止进程}}System.out.println("无法获取视频时长。");return null;}public Integer getVideoDurationSecond(String inputFilePath) {String videoDuration = getVideoDuration(inputFilePath);if (videoDuration == null) {return 0;}String[] durationParts = videoDuration.split(":");int hours = Integer.parseInt(durationParts[0].trim());int minutes = Integer.parseInt(durationParts[1].trim());int seconds = Integer.parseInt(durationParts[2].trim());// 计算总秒数return hours * 3600 + minutes * 60 + seconds;}

视频转码

	public void transcodeVideo(String inputFilePath, String outputFilePath) {ProcessBuilder processBuilder = new ProcessBuilder(ffmpegPath, "-i",inputFilePath, "-c:v", "libx264", "-c:a", "aac", outputFilePath);try {processBuilder.inheritIO(); // 将FFmpeg的输出信息打印到控制台
//            processBuilder.redirectErrorStream(true); // 合并错误输出流Process process = processBuilder.start();int exitCode = process.waitFor();if (exitCode == 0) {log.info("视频转码成功！");} else {log.info("视频转码失败！");}} catch (IOException | InterruptedException e) {e.printStackTrace();}}

参数后续……