Below is the code

 ArrayList<Bitmap> frameList;
String absolutePath;
/* MediaMetadataRetriever class is used to retrieve meta data from methods. */
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
try {
//path of the video of which you want frames
retriever.setDataSource(absolutePath);
}catch (Exception e) {
System.out.println("Exception= "+e);
}
// created an arraylist of bitmap that will store your frames
frameList = new ArrayList<Bitmap>();
String duration = retriever.extractMetadata(MediaMetadataRetriever.METADATA&#95;KEY&#95;DURATION);
int duration&#95;millisec = Integer.parseInt(duration); //duration in millisec
int duration&#95;second = duration&#95;millisec / 1000; //millisec to sec.
int frames&#95;per&#95;second = 2; //no. of frames want to retrieve per second
numeroFrameCaptured = frames&#95;per&#95;second * duration&#95;second;
for (int i = 0; i < numeroFrameCaptured; i++)
{
//setting time position at which you want to retrieve frames
frames.add(retriever.getFrameAtTime(5000*i) )
}

Hope, It will help you. :)