文章目录
转码 与加水印
引入jar包
java
<dependency>
<groupId>net.bramp.ffmpeg</groupId>
<artifactId>ffmpeg</artifactId>
<version>0.6.2</version>
</dependency>代码
java
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20s
String 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
shell
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： ```shell 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 