视频

linux下java使用ffmpeg将MP4视频转为H264编码

package com.blue.common.util;
import java.io.*;

public class MediocreExecJavac {
    
    public static boolean transfer(String infile,String outfile) {
        String avitoflv = "ffmpeg -i "+infile+" -ar 22050 -ab 56 -f flv -y -s 320x240 "+outfile;
        String flvto3gp = "ffmpeg -i " + infile + " -ar 8000 -ac 1 -acodec amr_nb -vcodec h263 -s 176x144 -r 12 -b 30 -ab 12 " + outfile;
        String avito3gp = "ffmpeg -i " + infile + " -ar 8000 -ac 1 -acodec amr_nb -vcodec h263 -s 176x144 -r 12 -b 30 -ab 12 " + outfile;
        String avitojpg = "ffmpeg -i " + infile + " -y -f image2 -ss 00:00:10 -t 00:00:01 -s 350x240 " + outfile;
        String videoCommend = "ffmpeg -i " + infile + " -vcodec libx264 -r 29.97 -b 768k -ar 24000 -ab 64k -s 1280x720 " + outfile;
        try {
            Runtime rt = Runtime.getRuntime();
            Process proc = rt.exec(videoCommend);
            InputStream stderr = proc.getErrorStream();
            InputStreamReader isr = new InputStreamReader(stderr);
            BufferedReader br = new BufferedReader(isr);
            String line = null;

            while ( (line = br.readLine()) != null)
                System.out.println(line);

            int exitVal = proc.waitFor();
            System.out.println("Process exitValue: " + exitVal);
        } catch (Throwable t) {
            t.printStackTrace();
            return false;
        }
        return true;
    }
}

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