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i want to convert the sdcard images into video in android.After many of searching i found it is possible in javacv.when i try simple javacv sample in pure java,its working perfectly in my eclipse.but when i turn into android,the same sample does not run in android.i download and add all the .jar files and .so files in myproject->libs/armeabi folder.my project doesn't show any errors.but error occcured during the runtime.

i try with this class,

package com.example.ndkfoo_sample; import static com.googlecode.javacv.cpp.opencv_core.cvReleaseImage; import static com.googlecode.javacv.cpp.opencv_highgui.cvLoadImage; import static com.googlecode.javacv.cpp.opencv_highgui.cvShowImage; import static com.googlecode.javacv.cpp.opencv_highgui.cvWaitKey; import static com.googlecode.javacv.cpp.opencv_imgproc.CV_GAUSSIAN; import static com.googlecode.javacv.cpp.opencv_imgproc.cvSmooth; import com.googlecode.javacv.cpp.opencv_core.IplImage; import android.os.Bundle; import android.app.Activity; import android.view.Menu; public class MainActivity extends Activity { // @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); IplImage img=cvLoadImage("helloworld.jpg"); cvShowImage("/mnt/sdcard/helloworld",img); cvSmooth(img,img,CV_GAUSSIAN,13); cvShowImage("Blur-Image",img); cvWaitKey(); cvReleaseImage(img); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } }

My error is like as,

 opencv error unspecified error.

My question is how to integrate opencv/javacv in android.is there any steps or tutorials.?

thanks,

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  • can you please put the code for more guidance because i have same problem occure. Commented Jul 7, 2015 at 12:37
  • Can you please me list me the jars that you used in your project for javacv ? I am using android studio so everything is new to me. Commented Oct 12, 2015 at 8:30

1 Answer 1

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Use the following lines .

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opencv_core.IplImage img = cvLoadImage("/sdcard/folder/img1.jpg"); FFmpegFrameRecorder recorder = new FFmpegFrameRecorder("/sdcard/folder/test.mpeg",200,150); try { recorder.setCodecID( CODEC_ID_MPEG1VIDEO); recorder.setFrameRate(30); recorder.setPixelFormat( PIX_FMT_YUV420P); recorder.start(); for (int i=0;i<100;i++) { recorder.record(image[x]); } recorder.stop(); } catch (Exception e){ e.printStackTrace(); }

** This is supported by javacv library. for more details read Javacv Readme.txt file. Hope this will help you.

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16 Comments

did u got video from images without green color?
hi tried your answer.i am getting error in this line,recorder.setCodecID(CODEC_ID_MPEG1VIDEO); error:CODEC_ID_MPEG1VIDEO can't be resolved to a variable.
for that you need to use javacv.jar and javacpp.jar files in your lib folder.. import from that jar files..
Experiment with other codecs: CODEC_ID_MPEG4 followed by recorder.setFormat("mp4");
@karlphillip yeah i have checked with both of them also.. it will create a file but i didn't got a perfect video file..
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