Marquee

Feature Introduction

Video is now used across various industries. However, video copyright issues remain a major challenge for most people. Screen recording is one of the hardest aspects of video piracy to prevent. How to prevent screen recording has become a common concern.

Therefore, POLYV has specifically developed a video feature to enhance screen recording prevention—the Video Marquee feature.

The marquee feature allows you to customize the specific effects of the marquee according to personal preferences, ensuring the feature prevents screen recording without affecting the visitor's viewing experience or the overall aesthetics of the video.

You can also use the interface provided by POLYV to set text to move irregularly across the video. For example, you can use code to obtain the visitor's ID and display it as a marquee on top of the video. This significantly increases the cost of screen recording for pirates while also strongly deterring them.

Backend Settings

Live Streaming Backend --> Select Channel --> Player Management --> Anti-Screen Recording Marquee

Fixed Value and Login Username

可设置参数

• When embedding externally, using the login username requires setting the param2 parameter, otherwise an error will occur.
• Fixed Value and Login Username allow quick setup for displaying the marquee, but their security is lower than Custom Marquee. For high anti-screen recording requirements, please use Custom Marquee and enable the anti-screen recording feature.

效果

Custom Marquee

If you need to use a custom marquee, you must set the marquee link in the live streaming backend, for example: http://www.mywebsite.com/validate.php

• Backend returns JSON Example code for the user's HTTP protocol interface (e.g., http://www.mywebsite.com/validate.php):

// validate.php
<?php
$username= "elvis";// 用户昵称, 若值为中文需要urlencode('张三')，从session获取
$vid = $_GET["vid"];    
$uid = $_GET["uid"];    
$t = $_GET["t"];    
$code = $_GET["code"];  // 可选
$callback = isset($_GET["callback"])?$_GET["callback"]:null; //未提交callback时则设为空
$msg='播放错误（测试）';          
$fontSize=50;     
$fontColor='0xFFFF00';  
$speed=50;
$filter='on';
$setting=3;
$alpha=0.9;
$filterAlpha=0.9;
$filterColor='0xFF0000';
$blurX=2;
$blurY=2;
$interval=2;
$lifeTime=5;
$tweenTime=5;
$strength=100;
$show='on';
$str="vid=".$vid."&uid=".$uid."&username=".$username."&code=".$code."&t=".$t."&msg=".$msg."&fontSize=".$fontSize."&fontColor=".$fontColor."&speed=".$speed."&filter=".$filter."&setting=".$setting."&alpha=".$alpha."&filterAlpha=".$filterAlpha."&filterColor=".$filterColor."&blurX=".$blurX."&blurY=".$blurY."&interval=".$interval."&lifeTime=".$lifeTime."&tweenTime=".$tweenTime."&strength=".$strength."&show=".$show;
$sign=md5($str);    //加密规则，md5加密，
$array = Array("show"=>$show,"sign"=>$sign,"username"=>$username,"msg"=>$msg,"fontSize"=>$fontSize,"fontColor"=>$fontColor,"speed"=>$speed,"filter"=>$filter,"setting"=>$setting,"alpha"=>$alpha,"filterAlpha"=>$filterAlpha,"filterColor"=>$filterColor,"blurX"=>$blurX,"blurY"=>$blurY,"interval"=>$interval,"lifeTime"=>$lifeTime,"tweenTime"=>$tweenTime,"strength"=>$strength);    
$validateJson = json_encode($array);

if($callback != ''){
    echo $callback."(".$validateJson.")";   
} else{
    echo $validateJson;
}
?>

Note: If the interface returns Chinese content, please modify the encoding to UTF-8.

The following is an example of the interface return:

{
  "username":"elvis",
  "sign":"6ab63590797e513d1b6c46b407413478",
  "msg":"Errormessage!",
  "fontSize":"40",
  "fontColor":"0xFFE900",
  "speed":"200",
  "filter":"on",
  "setting":"3",
  "alpha":"1",
  "filterAlpha":"1",
  "filterColor":"0x3914AF",
  "blurX":"2",
  "blurY":"2",
  "tweenTime":"1",
  "interval":"5",
  "lifeTime":"3",
  "strength":"4",
  "show":"on"
}

Parameter Explanation:

ps: For parameters of numeric type, ensure non-zero values are passed.

Parameter Details

sign
The calculation rule for sign is: concatenate the values of the following parameters into a string and perform MD5 calculation. The signature requires all the following parameters to be concatenated, even if the value is not set.

  $str="vid=".$vid."&uid=".$uid."&username=".$username."&code=".$code."&t=".$t."&msg=".$msg."&fontSize=".$fontSize."&fontColor=".$fontColor."&speed=".$speed."&filter=".$filter."&setting=".$setting."&alpha=".$alpha."&filterAlpha=".$filterAlpha."&filterColor=".$filterColor."&blurX=".$blurX."&blurY=".$blurY."&interval=".$interval."&lifeTime=".$lifeTime."&tweenTime=".$tweenTime."&strength=".$strength."&show=".$show;
  $sign=md5($str);

  例如：当vid="vid",uid="uid",username="suki",code="abc",t="143020010115550947",msg="Errormessage!",fontSize="40",fontColor="0xFFE900",speed="200",filter="on",setting="3",alpha="1",filterAlpha="1",filterColor="0x3914AF",blurX="2",blurY="2",interval="5",lifeTime="3",tweenTime="1",strength="4",show="on"时，
  拼凑起来去MD5计算的字符串为
  vid=vid&uid=uid&username=suki&code=abc&status=1&t=143020010115550947&msg=Errormessage!&fontSize=40&fontColor=0xFFE900&speed=200&filter=on&setting=3&alpha=1&filterAlpha=1&filterColor=0x3914AF&blurX=2&blurY=2&interval=5&lifeTime=3&tweenTime=1&strength=4&show=on
  则sign为MD5计算后32位小写的值：8e0cdbf64c0ce98d0ef76e845f70418c

• Player Invocation

When a webpage calls the POLYV player to play a video, the JS uses AJAX to request the user's interface. Cross-origin requests are required, and the parameters vid, uid, code, and t will be included (e.g., http(s)://www.mywebsite.com/validate.php?vid=vid&uid=uid&code=abc&t=143020010115550947).

Here, code is a parameter in the playback code with a custom value (as shown below, this parameter can be omitted from the playback code, in which case its value defaults to empty); t is a random number generated by the player.

Example Code:

<script src='https://player.polyv.net/resp/live-h5-player/latest/liveplayer.min.js'></script>
<div id='player'></div>
<script>
var player = polyvLivePlayer({
    wrap: '#player',
    width: 800,
    height: 533,
    uid: 'uid',
    vid: 'vid',
    code : 'myCodeValue'
});
</script>

Cross-Origin

• To allow Flash on PC to make cross-origin requests to the user's interface, the user must add a crossdomain.xml file to the root directory of their website domain.
• The H5 player has cross-origin issues. This can be resolved by adding the following configuration in PHP:

  header("Access-Control-Allow-Origin: *");

Please refer to Player Cross-Origin

Tips

• Playing in fullscreen mode on mobile web may cause the marquee to become ineffective.