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转码 与加水印

引入jar包

        <dependency><groupId>net.bramp.ffmpeg</groupId><artifactId>ffmpeg</artifactId><version>0.6.2</version></dependency>

代码

import lombok.extern.slf4j.Slf4j;
import net.bramp.ffmpeg.FFmpeg;
import net.bramp.ffmpeg.builder.FFmpegBuilder;
import net.bramp.ffmpeg.job.FFmpegJob;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;/*** @description 阿里云文件上传** @author lilinchun* @date 2024/10/17*/
@Slf4j
public class OssUtil {public static void main(String[] args) {String videoUrl = "xxx.mp4";try {convertAndUpload(videoUrl);} catch (Exception e) {e.printStackTrace();System.err.println("转换和上传失败: " + e.getMessage());}}/*** 将mp4文件url地址转换并上传到oss中* @param url mp4地址* @return m3u8文件地址*/public static String convertAndUpload(String url) throws Exception {String vodId = null;// 截取文件名称String fileName = url.substring(url.lastIndexOf('/') + 1);int lastDotIndex = fileName.lastIndexOf('.');String name = fileName.substring(0, lastDotIndex);String fileNameNew = name+"mark"+".mp4";// 当前项目的文件路径Path tempDir = Files.createTempDirectory("ffmpeg-temp");Path inputFilePath = tempDir.resolve(fileName);Path inputFilePathWatermark = tempDir.resolve(fileNameNew);Path outputM3U8Path = tempDir.resolve(name + ".m3u8");// 创建TS文件输出目录Path outputTSDir = tempDir.resolve(name + "_ts");Files.createDirectories(outputTSDir);log.info("临时文件路径：{}", tempDir.toString());try {downloadFileNew(url, tempDir.toString());// 设置水印watermarkVoid(inputFilePath,inputFilePathWatermark);// 转换生成M3U8和TS文件  指定播放片段为20sString ffmpegCommand = String.format("ffmpeg -i %s -codec: copy -start_number 0 -hls_time 20 -hls_list_size 0 -f hls -hls_segment_filename %s/%s_%%03d.ts %s",inputFilePathWatermark.toAbsolutePath(),outputTSDir.toAbsolutePath(),name,outputM3U8Path.toAbsolutePath());// 执行FFmpeg命令转换视频Process process = Runtime.getRuntime().exec(ffmpegCommand);process.waitFor();String indexFile = outputM3U8Path.toString();List<String> tsFiles = new ArrayList<>();System.out.println("解析文件路径地址:" + outputM3U8Path);for (int i = 0; ; i++) {Path tsFilePath = outputTSDir.resolve(String.format("%s_%03d.ts", name, i));if (!Files.exists(tsFilePath)) {break;}System.out.println("解析文件路径ts地址:" + tsFilePath);tsFiles.add(tsFilePath.toString());}// 上传阿里云视屏点播服务vodId = UploadVodByApi.uploadVideo(indexFile, tsFiles, name + ".m3u8");// 清理临时文件cleanup(tempDir);log.info("临时文件路径：{}", tempDir.toString());} catch (IOException e) {e.printStackTrace();log.error("文件转换失败：{}", e.getMessage());}return vodId;}/*** 设置视屏水印* @param inputFilePath 原始视屏路径* @param inputFilePathWatermark  水印视屏路径*/private static void watermarkVoid(Path inputFilePath,Path inputFilePathWatermark){log.info("文件名称：{}，{}",inputFilePath.toAbsolutePath(),inputFilePathWatermark.toAbsolutePath());// 构建FFmpeg命令String ffmpegCommandWatermark = String.format("ffmpeg -i \"%s\" -vf \"drawtext=text='nk.benwunet.com':x=mod(n\\,w+tw)-tw:y=10:fontsize=24:fontcolor=white\" -codec:a copy \"%s\"",inputFilePath.toAbsolutePath(),inputFilePathWatermark.toAbsolutePath());log.info("执行加水印的命令：{}",ffmpegCommandWatermark);try {// 使用ProcessBuilder来启动外部进程// 使用ProcessBuilder来启动外部进程ProcessBuilder processBuilder = new ProcessBuilder("ffmpeg", "-i", inputFilePath.toAbsolutePath().toString(),"-vf", "drawtext=text='nk.benwunet.com':x=mod(n\\,w+tw)-tw:y=10:fontsize=24:fontcolor=white","-codec:a", "copy",inputFilePathWatermark.toAbsolutePath().toString());// 将错误输出重定向到标准输出processBuilder.redirectErrorStream(true);Process process = processBuilder.start();// 读取输出BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));String line;while ((line = reader.readLine()) != null) {log.info(line);}// 等待进程完成int exitCode = process.waitFor();if (exitCode == 0) {log.info("Video watermarking completed successfully.");} else {log.error("FFmpeg command failed with exit code: " + exitCode);}// 关闭资源reader.close();}catch (Exception e){log.error("Error occurred while processing the video: ", e);}}/*** 下载文件* @param urlStr 文件地址* @param saveDir 文件路径* @throws IOException 异常*/public static void downloadFileNew(String urlStr, String saveDir) throws IOException {CloseableHttpClient httpClient = HttpClientSingleton.getInstance();HttpGet request = new HttpGet(urlStr);try (CloseableHttpResponse response = httpClient.execute(request)) {int responseCode = response.getStatusLine().getStatusCode();if (responseCode == 200) {String fileName = urlStr.substring(urlStr.lastIndexOf('/') + 1);String saveFilePath = saveDir + File.separator + fileName;try (InputStream inputStream = response.getEntity().getContent();FileOutputStream outputStream = new FileOutputStream(saveFilePath)) {byte[] buffer = new byte[4096];int bytesRead;while ((bytesRead = inputStream.read(buffer)) != -1) {outputStream.write(buffer, 0, bytesRead);}}} else {throw new IOException("No file to download. Server replied HTTP code: " + responseCode);}}}/*** 清理文件* @param dir 文件地址  示例：/tmp/ffmpeg-temp9193762578321295193* @throws IOException 异常*/private static void cleanup(Path dir) throws IOException {Files.walk(dir)// 逆序遍历，先删除子文件.sorted((a, b) -> -a.compareTo(b)).forEach(path -> {try {Files.delete(path);} catch (IOException e) {e.printStackTrace();}});}}

ffmpeg安装

可以安装宝塔的

1、安装管理器

2、安装ffmpeg的版本

3、测试

检查版本

ffmpeg -version

错误

No such filter: ‘drawtext’
[vost#0:0/libx264 @ 0x7eabd00] Error initializing a simple filtergraph
Error opening output file 01mark.mp4

转码中使用到了drawtext，但是ffmpeg并没有drawtext，所以报错了

解决方法

1、确认FFmpeg版本
确保你安装的FFmpeg版本支持drawtext滤镜。运行以下命令来查看所有可用的滤镜：

ffmpeg -filters

我之前是安装的ffmpeg-6.1 发现没有这个滤镜，之后我安装了ffmpeg-4.4.1 就有了，可以正常使用