合并文件中的多个视频文件 [英] Merge multiple video file in a file
本文介绍了合并文件中的多个视频文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有多个视频以相同的帧速率和分辨率录制。我想将两个视频合并为一个视频,因此结果文件将是大视频。
我正在使用MP4解析器api并使用下面的代码 -
I have multiple video recorded with same frame rate,and resolution.I want to merge both video to one video so result file will be large video. I am using MP4 parser api and use below code -
Movie countVideo = new MovieCreator().build(Channels.newChannel(MuxExample.class.getResourceAsStream("/count-video.mp4")));
Movie countAudioDeutsch = new MovieCreator().build(Channels.newChannel(MuxExample.class.getResourceAsStream("/count-deutsch-audio.mp4")));
Movie countAudioEnglish = new MovieCreator().build(Channels.newChannel(MuxExample.class.getResourceAsStream("/count-english-audio.mp4")));
并使用jar isoviewer-1.0-RC-35.jar。但它给出了错误 -
and using jar isoviewer-1.0-RC-35.jar. but it gives error in line -
Movie countVideo = new MovieCreator().build(Channels.newChannel(MuxExample.class.getResourceAsStream("/count-video.mp4")));
在构建方法。它说类型中的方法构建(String) MovieCreator不适用于参数(FileChannel)
jar.So是否有任何问题我必须使用哪个jar。
或任何其他方式来做到这一点。
请帮我解决这一点。
Is there any issue of jar.So which jar i have to use. Or any other way to do this. Please help me in solve this point.
推荐答案
试试这个:
我做了两个视频文件。
I did with two video files.
public static void main(String[] args)
{
String filenamevideo = "f:/testvidfol/video.mp4"; //video file on your disk
String filenameaudio = "f:/testvidfol/audio.wav"; //audio file on your disk
IMediaWriter mWriter = ToolFactory.makeWriter("f:/testvidfol/videowriter.flv"); //output file
IContainer containerVideo = IContainer.make();
IContainer containerAudio = IContainer.make();
if (containerVideo.open(filenamevideo, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("Cant find " + filenamevideo);
if (containerAudio.open(filenameaudio, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("Cant find " + filenameaudio);
int numStreamVideo = containerVideo.getNumStreams();
int numStreamAudio = containerAudio.getNumStreams();
System.out.println("Number of video streams: "+numStreamVideo + "\n" + "Number of audio streams: "+numStreamAudio );
int videostreamt = -1; //this is the video stream id
int audiostreamt = -1;
IStreamCoder videocoder = null;
for(int i=0; i<numStreamVideo; i++){
IStream stream = containerVideo.getStream(i);
IStreamCoder code = stream.getStreamCoder();
if(code.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO)
{
videostreamt = i;
videocoder = code;
break;
}
}
for(int i=0; i<numStreamAudio; i++){
IStream stream = containerAudio.getStream(i);
IStreamCoder code = stream.getStreamCoder();
if(code.getCodecType() == ICodec.Type.CODEC_TYPE_AUDIO)
{
audiostreamt = i;
break;
}
}
if (videostreamt == -1) throw new RuntimeException("No video steam found");
if (audiostreamt == -1) throw new RuntimeException("No audio steam found");
if(videocoder.open()<0 ) throw new RuntimeException("Cant open video coder");
IPacket packetvideo = IPacket.make();
IStreamCoder audioCoder = containerAudio.getStream(audiostreamt).getStreamCoder();
if(audioCoder.open()<0 ) throw new RuntimeException("Cant open audio coder");
mWriter.addAudioStream(0, 0, audioCoder.getChannels(), audioCoder.getSampleRate());
mWriter.addVideoStream(1, 1, videocoder.getWidth(), videocoder.getHeight());
IPacket packetaudio = IPacket.make();
while(containerVideo.readNextPacket(packetvideo) >= 0 ||
containerAudio.readNextPacket(packetaudio) >= 0){
if(packetvideo.getStreamIndex() == videostreamt){
//video packet
IVideoPicture picture = IVideoPicture.make(videocoder.getPixelType(),
videocoder.getWidth(),
videocoder.getHeight());
int offset = 0;
while (offset < packetvideo.getSize()){
int bytesDecoded = videocoder.decodeVideo(picture,
packetvideo,
offset);
if(bytesDecoded < 0) throw new RuntimeException("bytesDecoded not working");
offset += bytesDecoded;
if(picture.isComplete()){
System.out.println(picture.getPixelType());
mWriter.encodeVideo(1, picture);
}
}
}
if(packetaudio.getStreamIndex() == audiostreamt){
//audio packet
IAudioSamples samples = IAudioSamples.make(512,
audioCoder.getChannels(),
IAudioSamples.Format.FMT_S32);
int offset = 0;
while(offset<packetaudio.getSize())
{
int bytesDecodedaudio = audioCoder.decodeAudio(samples,
packetaudio,
offset);
if (bytesDecodedaudio < 0)
throw new RuntimeException("could not detect audio");
offset += bytesDecodedaudio;
if (samples.isComplete()){
mWriter.encodeAudio(0, samples);
}
}
}
}
}
希望它会对你有帮助。
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