85 lines
3.3 KiB
Java
85 lines
3.3 KiB
Java
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package com.multictrl.common.utils;
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import lombok.extern.slf4j.Slf4j;
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import java.io.File;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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/**
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* 图像、音频处理
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*
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* @author Sdy
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* @since 1.0.0 2026/4/29
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*/
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@Slf4j
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public class FfmpegUtils {
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//视频预览图片帧抽取
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private static final String FFMPEG_VIDEO_COVER_IMAGE_COMMAND =
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"ffmpeg -i %s -vf \"select=eq(pict_type\\,I)\" -frames:v 1 -pix_fmt yuvj422p -vsync vfr -qscale:v 2 -f image2 %s -y";
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/**
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* 生成视频封面图片
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*/
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public static void generateVideoCover(String videoPath, String videoCoverPath) {
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File file = new File(videoPath);
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if (file.exists()) {
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File imageFile = new File(videoCoverPath);
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if (!imageFile.exists()) {
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String command = String.format(FFMPEG_VIDEO_COVER_IMAGE_COMMAND, videoPath, videoCoverPath);
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String[] cmd = {"/bin/sh", "-c", command};
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try {
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ProcessBuilder processBuilder = new ProcessBuilder();
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processBuilder.command(cmd).inheritIO();
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processBuilder.environment().clear();
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processBuilder.environment().put("LANG", "en_US.UTF-8");
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processBuilder.redirectErrorStream(true);
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Process process = processBuilder.start();
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InputStream inputStream = process.getInputStream();
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InputStreamReader reader = new InputStreamReader(inputStream, "GBK");
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char[] chars = new char[1024];
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int len;
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while ((len = reader.read(chars)) != -1) {
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String string = new String(chars, 0, len);
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log.debug("ffmpeg->video->cover : {}", string);
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}
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reader.close();
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inputStream.close();
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} catch (Exception e) {
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log.error("ffmpeg->video->cover: error", e);
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}
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log.debug("mp4 file = {} ,image file={} ,执行ffmpeg命令={} , imageFile_exists_flag={}",
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file.getAbsolutePath(),
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imageFile.getAbsolutePath(), command, imageFile.exists());
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}
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}
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}
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/**
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* 指令运行
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*/
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public static void runCommand(String command) {
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String[] cmd = {"/bin/sh", "-c", command};
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try {
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ProcessBuilder processBuilder = new ProcessBuilder();
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processBuilder.command(cmd).inheritIO();
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processBuilder.environment().clear();
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processBuilder.environment().put("LANG", "en_US.UTF-8");
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processBuilder.redirectErrorStream(true);
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Process process = processBuilder.start();
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InputStream inputStream = process.getInputStream();
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InputStreamReader reader = new InputStreamReader(inputStream, "GBK");
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char[] chars = new char[1024];
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int len;
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while ((len = reader.read(chars)) != -1) {
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String string = new String(chars, 0, len);
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log.info("ffmpeg->shout->file->cover : {}", string);
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}
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reader.close();
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inputStream.close();
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} catch (Exception e) {
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log.error("ffmpeg->shout->file->cover: error", e);
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}
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}
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}
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