Getting frame from movie

Getting a single frame from a movie ( supports only AVC, H.264 in MP4, ISO BMF, Quicktime container ):

int frameNumber = 150;
BufferedImage frame = FrameGrab.getFrame(new File("filename.mp4"), frameNumber);
ImageIO.write(frame, "png", new File("frame_150.png"));

Getting a sequence of frames from a movie ( supports only AVC, H.264 in MP4, ISO BMF, Quicktime container ):

double startSec = 51.632;
FileChannelWrapper ch = null;
try {
    ch = NIOUtils.readableFileChannel(new File("filename.mp4"));
    FrameGrab fg = new FrameGrab(ch);
    grab.seek(startSec);
    for (int i = 0; i < 100; i++) {
        ImageIO.write(grab.getFrame(), "png",
            new File(System.getProperty("user.home"), String.format("Desktop/frame_%08d.png", i)));
    }
} finally {
    NIOUtils.closeQuietly(ch);
}

Found a mistake? Have a question or improvement idea? Let me know.

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