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我試圖將灰度效果應用到視頻文件中使用JavaCV在android.Everything工作正常,但沒有音頻出現在輸出文件中。以下是代碼。請幫助在使用FFmpegFrameGrabber,FrameRecorder JavaCv創建的視頻中沒有聲音捕獲Android
File file = new File(Environment.getExternalStorageDirectory() + File.separator + "test3.mp4");
FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber(file.getAbsolutePath());
FrameRecorder recorder = null;
Log.d("bharat", " Audio channels = " + frameGrabber.getAudioChannels()); // THIS IS RETurnING 0 and not 2
recorder = new FFmpegFrameRecorder("/mnt/sdcard/streaml_t.mp4", 270, 480, frameGrabber.getAudioChannels());
recorder.setVideoCodec(AV_CODEC_ID_H264);
recorder.setFormat("mp4");
recorder.setFrameRate(frameGrabber.getFrameRate());
recorder.setSampleFormat(frameGrabber.getSampleFormat());
recorder.setSampleRate(frameGrabber.getSampleRate());
try {
recorder.start();
frameGrabber.start();
int count = 0;
while (true) {
try {
Frame grabFrame = frameGrabber.grabFrame();
Log.d("bharat:", "frame " + count++);
if (grabFrame == null) {
System.out.println("!!! Failed cvQueryFrame");
break;
}
IplImage frame_copy = cvCreateImage(cvSize(grabFrame.image.width(), grabFrame.image.height()), IPL_DEPTH_8U, 1);
cvCvtColor(grabFrame.image, frame_copy, CV_RGB2GRAY);
grabFrame.image = frame_copy;
recorder.setTimestamp(frameGrabber.getTimestamp());
recorder.record(grabFrame);
} catch (Exception e) {
e.printStackTrace();
}
}
Log.d("bharat:", "frame done");
recorder.stop();
recorder.release();
} catch (Exception e) {
e.printStackTrace();
}
}
P. S:我發現frameGrabber.getAudioChannels()將返回0,而不是2(在情況下,它可以幫助)
謝謝@Vit Shiryaev,但我得到了答案。我實際上使用的是javaCV 0.7,但它不工作。然後我更新到javaCV 0.9,現在就開始工作。謝謝 – Bharat 2014-11-06 06:26:56