不用ffmpeg实现获取视频缩略图

Question

opencv for java?c++,.net 都可以的 java 的还没上过

Answer 1

视频封装类：
public class Video {
    private String flash;
    private String pic;
    private String time;
    public String getFlash() {
        return flash;
    }
    public void setFlash(String flash) {
        this.flash = flash;
    }
    public String getPic() {
        return pic;
    }
    public void setPic(String pic) {
        this.pic = pic;
    }
    public String getTime() {
        return time;
    }
    public void setTime(String time) {
        this.time = time;
    }
}获取视频地址 缩略图 及 时长import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;public class VideoUtil {
    
    /**
     * 获取视频信息
     * @param url
     * @return
     */
    public static Video getVideoInfo(String url){
        Video video = new Video();
        
        if(url.indexOf("v.youku.com")!=-1){
            try {
                video = getYouKuVideo(url);
            } catch (Exception e) {
                video = null;
            }
        }else if(url.indexOf("tudou.com")!=-1){
            try {
                video = getTudouVideo(url);
            } catch (Exception e) {
                video = null;
            }
        }else if(url.indexOf("v.ku6.com")!=-1){
            try {
                video = getKu6Video(url);
            } catch (Exception e) {
                video = null;
            }
        }else if(url.indexOf("6.cn")!=-1){
            try {
                video = get6Video(url);
            } catch (Exception e) {
                video = null;
            }
        }else if(url.indexOf("56.com")!=-1){
            try {
                video = get56Video(url);
            } catch (Exception e) {
                video = null;
            }
        }
        
        return video;
    }
    
    
    /**
     * 获取优酷视频
     * @param url  视频URL
     */
    public static Video getYouKuVideo(String url) throws Exception{
        Document doc = getURLContent(url);
        
        /**
         *获取视频缩略图 
         */
        String pic = getElementAttrById(doc, "s_sina", "href");
        int local = pic.indexOf("pic=");
        pic = pic.substring(local+4);
        
        /**
         * 获取视频地址
         */        
        String flash = getElementAttrById(doc, "link2", "value");
        
        /**
         * 获取视频时间
         */    
        String time = getElementAttrById(doc, "download", "href");
        String []arrays = time.split("\\|");
        time = arrays[4];
        
        Video video = new Video();
        video.setPic(pic);
        video.setFlash(flash);
        video.setTime(time);
        
        return video;
    }
    
    
    /**
     * 获取土豆视频
     * @param url  视频URL
     */
    public static Video getTudouVideo(String url) throws Exception{
        Document doc = getURLContent(url);
        String content = doc.html();
        int beginLocal = content.indexOf("<script>document.domain");
        int endLocal = content.indexOf("</script>");
        content = content.substring(beginLocal, endLocal);
        
        /**
         * 获取视频地址
         */    
        String flash = getScriptVarByName("iid_code", content);
        flash = "http://www.tudou.com/v/" + flash + "/v.swf";
        
        /**
         *获取视频缩略图 
         */
        String pic = getScriptVarByName("thumbnail", content);
        
        /**
         * 获取视频时间
         */    
        String time = getScriptVarByName("time", content);        Video video = new Video();
        video.setPic(pic);
        video.setFlash(flash);
        video.setTime(time);
        
        return video;
    }
    
    
    /**
     * 获取酷6视频
     * @param url  视频URL
     */
    public static Video getKu6Video(String url) throws Exception{
        Document doc = getURLContent(url);
        
        /**
         * 获取视频地址
         */
        Element flashEt = doc.getElementById("outSideSwfCode");
        String flash = flashEt.attr("value");
        
        /**
         * 获取视频缩略图
         */
        Element picEt = doc.getElementById("plVideosList");
        String time = null;
        String pic = null;
        if(picEt!=null){
            Elements pics = picEt.getElementsByTag("img");
            pic = pics.get(0).attr("src");
            
            /**
             * 获取视频时长
             */
            Element timeEt = picEt.select("span.review>cite").first(); 
            time = timeEt.text();
        }else{
            pic = doc.getElementsByClass("s_pic").first().text();
        }
        
        Video video = new Video();
        video.setPic(pic);
        video.setFlash(flash);
        video.setTime(time);
        
        return video;
        
    }
    
    
    /**
     * 获取6间房视频
     * @param url  视频URL
     */
    public static Video get6Video(String url) throws Exception{
        Document doc = getURLContent(url);
        
        /**
         * 获取视频缩略图
         */
        Element picEt = doc.getElementsByClass("summary").first();
        String pic = picEt.getElementsByTag("img").first().attr("src");
        
        /**
         * 获取视频时长
         */
        String time = getVideoTime(doc, url, "watchUserVideo");
        if(time==null){
            time = getVideoTime(doc, url, "watchRelVideo");
        }
        
        /**
         * 获取视频地址
         */
        Element flashEt = doc.getElementById("video-share-code");
        doc = Jsoup.parse(flashEt.attr("value"));  
        String flash = doc.select("embed").attr("src");
        
        Video video = new Video();
        video.setPic(pic);
        video.setFlash(flash);
        video.setTime(time);
        
        return video;
    }
    
    
    /**
     * 获取56视频
     * @param url  视频URL
     */
    public static Video get56Video(String url) throws Exception{
        Document doc = getURLContent(url);
        String content = doc.html();
        
        /**
         * 获取视频缩略图
         */
        int begin = content.indexOf("\"img\":\"");
        content = content.substring(begin+7, begin+200);
        int end = content.indexOf("\"};");
        String pic = content.substring(0, end).trim();
        pic = pic.replaceAll("\\\\", "");        
        
        /**
         * 获取视频地址
         */
        String flash = "http://player.56.com" + url.substring(url.lastIndexOf("/"), url.lastIndexOf(".html")) + ".swf";
        
        Video video = new Video();
        video.setPic(pic);
        video.setFlash(flash);
        
        return video;
    }    /**
     * 获取6间房视频时长    
     */
    private static String getVideoTime(Document doc, String url, String id) {
        String time = null;
        
        Element timeEt = doc.getElementById(id); 
        Elements links = timeEt.select("dt > a");
        
        
        for (Element link : links) {
          String linkHref = link.attr("href");
          if(linkHref.equalsIgnoreCase(url)){
              time = link.parent().getElementsByTag("em").first().text();
              break;
          }
        }
        return time;
    }
    
            
    /**
     * 获取script某个变量的值
     * @param name  变量名称
     * @return   返回获取的值 
     */
    private static String getScriptVarByName(String name, String content){
        String script = content;
        
        int begin = script.indexOf(name);
        
        script = script.substring(begin+name.length()+2);
        
        int end = script.indexOf(",");
        
        script = script.substring(0,end);
        
        String result=script.replaceAll("'", "");
        result = result.trim();
        
        return result;
    }
    
    
    /**
     * 根据HTML的ID键及属于名，获取属于值
     * @param id  HTML的ID键
     * @param attrName  属于名
     * @return  返回属性值
     */
    private static String getElementAttrById(Document doc, String id, String attrName)throws Exception{
        Element et = doc.getElementById(id);
        String attrValue = et.attr(attrName);
        
        return attrValue;
    }
    
    
    
    /**
     * 获取网页的内容
     */
    private static Document getURLContent(String url) throws Exception{
        Document doc = Jsoup.connect(url)
          .data("query", "Java")
          .userAgent("Mozilla")
          .cookie("auth", "token")
          .timeout(6000)
          .post();
        return doc;
    }
    
    
    public static void main(String[] args) {
        //String url = "http://v.youku.com/v_show/id_XMjU0MjI2NzY0.html";
        //String url = "http://www.tudou.com/programs/view/pVploWOtCQM/";
        //String url = "http://v.ku6.com/special/show_4024167/9t7p64bisV2A31Hz.html";
        //String url = "http://v.ku6.com/show/BpP5LeyVwvikbT1F.html";
        //String url = "http://6.cn/watch/14757577.html";
        String url = "http://www.56.com/u64/v_NTkzMDEzMTc.html";
        Video video = getVideoInfo(url);
        System.out.println("视频缩略图："+video.getPic());
        System.out.println("视频地址："+video.getFlash());
        System.out.println("视频时长："+video.getTime());
    }
}

Answer 2

还得有个jar包
http://jsoup.org/download

Answer 3

还是不大明白，能把完整的代码发邮箱吗？[email protected]谢谢