用Javacv,ffmpeg将图片合成为视频

https://www.trashcode.cn/post/d/9b7505de-5693-4a65-9e4a-c413c641b25f

步骤为：

读取图片库图片，用ffmpeg创建recorder

将读取到的图片转换为IplImage，用创建的recorder进行记录

生成视频

/**

* 通过图片创建视频

* @return

*/

public String createVideoFromPhoto()

{

//图片路径，指向图片目录

String imgFolder = videoFolder + "imggen\\emerge\\";

String videoFormat = "mp4";

String videoGenFolder = videoFolder + "videogen\\";

String videoName = "vCreateFromPhoto";

String videoGenPath = videoGenFolder + videoName + "." + videoFormat;

MediaTool.tryDelete(videoGenPath);

//用FFmpeg提供的 recorder 记录图片帧生成视频

FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(videoGenPath, 640, 480);

try {

// recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);

// recorder.setVideoCodec(avcodec.AV_CODEC_ID_FLV1);

//设置编码格式

recorder.setVideoCodec(avcodec.AV_CODEC_ID_MPEG4);

recorder.setFormat(videoFormat);

// recorder.setFormat("mov,mp4,m4a,3gp,3g2,mj2,h264,ogg,MPEG4");

recorder.setFrameRate(30);

//recorder.setPixelFormat(0); // yuv420p

recorder.setPixelFormat(avutil.AV_PIX_FMT_YUV420P);

recorder.start();

//图片转换器

OpenCVFrameConverter.ToIplImage conveter = new OpenCVFrameConverter.ToIplImage();

File file = new File(imgFolder);

File[] flist = file.listFiles();

String imgPath;

// 循环所有图片

org.bytedeco.opencv.opencv_core.IplImage image;

org.bytedeco.opencv.opencv_core.IplImage imageOther=null;

for (int i = 0; i < flist.length; i++) {

imgPath=imgFolder+flist[i].getName();

//image=opencv_imgcodecs.cvLoadImage(imgPath);

//加载图片

imageOther= cvLoadImage(imgPath);

for (int j = 0; j < 30; j++)

//按照帧率30进行记录

recorder.record(conveter.convert(imageOther));

//recorder.record(conveter.convert(image));

//opencv_core.cvReleaseImage(image);

}

opencv_core.cvReleaseImage(imageOther);

recorder.stop();

recorder.release();

//输出视频路径

LOGGER.info(videoGenPath);

} catch (Exception e) {

LOGGER.error("", e);

}

return videoGenPath;

}