import com.coremedia.iso.boxes.AbstractMediaHeaderBox; //导入依赖的package包/类
public AbstractMediaHeaderBox getMediaHeaderBox() {
    return headerBox;
}
 

import com.coremedia.iso.boxes.AbstractMediaHeaderBox; //导入依赖的package包/类
public AbstractMediaHeaderBox getMediaHeaderBox() {
    return new VideoMediaHeaderBox();
}
 

import com.coremedia.iso.boxes.AbstractMediaHeaderBox; //导入依赖的package包/类
public AbstractMediaHeaderBox getMediaHeaderBox() {
    return new SoundMediaHeaderBox();
}
 

import com.coremedia.iso.boxes.AbstractMediaHeaderBox; //导入依赖的package包/类
public AbstractMediaHeaderBox getMediaHeaderBox() {
    return new NullMediaHeaderBox();
}
 

import com.coremedia.iso.boxes.AbstractMediaHeaderBox; //导入依赖的package包/类
public AbstractMediaHeaderBox getMediaHeaderBox() {
    return mihd;
}