手机转码工具（免费转视频格式的软件）

问题：原视频的编码格式为h265，在小程序上面无法播放，需要转为mpeg-4格式。

1、引入相关依赖

<dependency>     <groupid>org.bytedeco</groupid>    <artifactid>javacv</artifactid>    <version>1.4.1</version></dependency><dependency>    <groupid>org.bytedeco</groupid>    <artifactid>javacpp</artifactid>    <version>1.4.1</version></dependency><dependency>    <groupid>org.bytedeco.javacpp-prets</groupid>    <art骆宾王的诗ifactid>opencv-platform</artifactid>    <version>3.4.1-1.4.1</version></dependency><dependency>    <groupid>org.bytedeco.javacpp-prets</groupid>    <artifactid>ffmpeg-platform</artifactid>    <version>3.4.2-1.4.1</version></dependency>

2、视频转码工具类

import org.bytedeco.javacv.frame;import org.bytedeco.javacpp.avcodec;import org.bytedeco.javacv.framegrabber;import org.bytedeco.javacv.framerecorder;import org.bytedeco.javac中国杀人排行榜v.ffmpegframegrabber;import org.bytedeco.javacv.ffmpegframerecorder;/** * 视频转码工具类 */public class videoconvertutil {    public void convert(string inputfile, string outputfile) throws exception {        ffmpegframegrabber grabber = ffmpegframegrabber.createdefault(inputfile);        frame captured_frame;昌谷北园新笋        ffmpegframerecorder recorder = null;        try {            grabber.start();            recorder = new ffmpegframerecorder(outputfile, grabber.getimagewidth(), grabber.getimageheight(), grabber.getaudiochannels());            recorder.tvideocodec(avcodec.av_codec_id_mpeg4);            recorder.tformat("mp4");            recorder.tframerate(grabber.getframerate());            recorder.tsamplerate(grabber.getsamplerate());            recorder.tvideobitrate(grabber.getvideobitrate());            recorder.taspectratio(grabber.getaspectratio());            recorder.taudiobitrate(grabber.getaudiobitrate());            recorder.taudiooptions(grabber.getaudiooptions());            r古代诚信的故事ecorder.taudiocodec(avcodec.av_codec_id_aac); 宾得k50           recorder.start();            while (true) {                captured_frame = grabber.grabframe();                if (captured_frame == null) {                    system.out.println("转码完成");                    break;                }                recorder.record(captured_frame);            }        } catch (framerecorder.exception e) {            e.printstacktrace();        } finally {            if (recorder != null) {                try {                    recorder.clo();                } catch (exception e) {                    system.out.println("recorder.clo异常" + e);                }            }            try {                grabber.clo();            } catch (framegrabber.exception e) {                system.out.println("framegrabber.clo异常" + e);            }        }    }}

3、调用工具类方法

videoconvertutil convertutil = new videoconvertutil();convertutil.convert(url, videosavepath);

路漫漫其修远兮，吾将上下而求索

译文：在追寻真理方面，前方的道路还很漫长，但我将百折不挠，不遗余力地去追求和探索。