Can't read GoPro Camera video HiLight tags

[Qamar4P]

Go Pro tag

ReadableByteChannel chanel = Channels.newChannel(in);
    IsoFile isoFile = new IsoFile(chanel);
    MovieBox movieBox = isoFile.getMovieBox();

    UnknownBox unknownBox = movieBox.getBoxes(UnknownBox.class).get(0);

    UserDataBox udta = movieBox.getBoxes(UserDataBox.class).get(0);

    stringBuilder.append("UserBoxes:\n");
    for(Box b : udta.getBoxes()) {
      if (b.getType().contains("HMMT")) {
          stringBuilder.append("yeah founded\n");
          stringBuilder.append(b);
       }
  }

@sannies can you please guide me in this stack-overflow question link

[Qamar4P]

MovieBox movieBox = isoFile.getMovieBox();
                UserDataBox userDataBox = movieBox.getBoxes(UserDataBox.class).get(0);
               stringBuilder.append(userDataBox.getType()+"\n");
                stringBuilder.append(userDataBox.getBoxes(HMMTBox.class).get(0));

Using following my class. returns null. @sannies can you please guide me regarding this.

import org.mp4parser.Box;
import org.mp4parser.BoxParser;
import org.mp4parser.support.AbstractFullBox;
import org.mp4parser.tools.IsoTypeReader;
import org.mp4parser.tools.IsoTypeWriter;
import org.mp4parser.tools.Utf8;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;

/**
 * Created by Qamar4P on 4/28/2017.
 */

public class HMMTBox extends AbstractFullBox {
    public static final String TYPE = "HMMT";
    private long count;
    private long[] milliseconds;

    public long getCount() {
        return count;
    }

    public void setCount(int count) {
        this.count = count;
    }

    public long[] getMilliseconds() {
        return milliseconds;
    }

    public void setMilliseconds(long[] milliseconds) {
        this.milliseconds = milliseconds;
    }

    public HMMTBox() {
        super(TYPE);
    }

    protected long getContentSize() {
        return 8 + (milliseconds != null ? milliseconds.length*8 : 0);
    }

    protected void getContent(ByteBuffer byteBuffer) {
        writeVersionAndFlags(byteBuffer);
        IsoTypeWriter.writeUInt32(byteBuffer, count);
        if(milliseconds != null && milliseconds.length > 0){
            for (long millisecond : milliseconds) {
                byteBuffer.put(longToByteArray(millisecond));
            }
        }
        byteBuffer.put((byte) 0);
    }

    public byte[] longToByteArray(long value) {
        return new byte[] {
                (byte) (value >> 56),
                (byte) (value >> 48),
                (byte) (value >> 40),
                (byte) (value >> 32),
                (byte) (value >> 24),
                (byte) (value >> 16),
                (byte) (value >> 8),
                (byte) value
        };
    }

    @Override
    public void _parseDetails(ByteBuffer content) {
        parseVersionAndFlags(content);
        count = IsoTypeReader.readUInt32(content);
        if(count > 0){
            milliseconds = new long[(int) count];
            for (int i = 0; i < milliseconds.length; i++) {
                milliseconds[i] = IsoTypeReader.readUInt32(content);
            }

        }
    }

    public String toString() {
        return "Count[count=" + getCount() + ";milliseconds=" + getMilliseconds() + "]";
    }

[Qamar4P]

What I understand library doesn't returns UnknownBox's from UserDataBox.

While com.googlecode.mp4parser does in https://github.com/sannies/isoviewer but issue still not resolved. we need

InputStream in = new BufferedInputStream(urlConnection.getInputStream());

ReadableByteChannel chanel = Channels.newChannel(in);
IsoFile isoFile = new IsoFile(chanel);