Jwplayer视频播放器无法正常工作

Jwplayer video player not working

本文关键字：工作常工作视频播放器 Jwplayer 更新时间：2023-09-26

我正在尝试设置 Jwplayer 视频播放器，但没有任何显示，根本没有显示视频播放器。我在设置中做错了什么，因为我按照说明进行操作，但视频文件来自数据库并且 mysqli 绝对正确：

    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>Preview Video</title>
        <script type="text/javascript" src="jquery/jwplayer.js"></script>
    </head>
    <body>
    <?php
    $getvideo = 'VideoFiles/' . $_GET['filename'];
    $videoquery = "SELECT VideoFile FROM Video WHERE (VideoFile = ?)";
            if (!$videostmt = $mysqli->prepare($videoquery)) {
            // Handle errors with prepare operation here
    }

    // Bind parameter for statement
    $videostmt->bind_param("s", $getvideo);
    // Execute the statement
    $videostmt->execute();
                if ($videostmt->errno) 
                {
                    // Handle query error here
                }

    $videostmt->fetch(); 
    $videostmt->close(); 
    ?>
    <div id="myElement">Loading the player...</div>
    <script type="text/javascript">
        jwplayer("myElement").setup({
            file: "<php echo $getvideo ?>",
            image: "/uploads/example.jpg",
        });
    </script>

**UPDATE:**
Current code:
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
    <title>Preview Video</title>
    <script type="text/javascript" src="jquery/jquery-1.7.min.js"></script>   
    <script type="text/javascript" src="jquery/jwplayer.js"></script>
</head>
<body>
<?php
$getvideo = 'VideoFiles/' . $_GET['filename'];
$videoquery = "SELECT VideoFile FROM Video WHERE (VideoFile = ?)";
        if (!$videostmt = $mysqli->prepare($videoquery)) {
        // Handle errors with prepare operation here
}

// Bind parameter for statement
$videostmt->bind_param("s", $getvideo);
// Execute the statement
$videostmt->execute();
            if ($videostmt->errno) 
            {
                // Handle query error here
            }
 $videostmt->bind_result($dbVideoFile); 
$videostmt->fetch(); 
$videoPath='http://domain.com/videos/'.$dbVideoFile;
$videostmt->close(); 
?>
<div id="myElement">Loading the player...</div>
<script type="text/javascript">
    jwplayer("myElement").setup({
        file: "<php echo $videoPath ?>",
        image: "example.jpg",
    });
</script>
</body>

好的，正在发生的事情是，当我使用 $GET 方法从上一页（使用超链接）获取视频的文件名时，它会打开一个新页面，网址如下：

http://helios.hud.ac.uk/u05454444/Mobile_app/previewvideo.php?filename=sample_mpeg4_5.mp4

当我尝试检索视频文件时，在数据库中，它以VideoFiles/sample_mpeg4_5.mp4的形式存储在数据库中。

这是因为视频存储在VideoFiles文件夹中

现在它显示一个黑色方块，视频播放器应该在其中显示：

Error loading player:
No playable sources found

我是否需要包含jwplayer.html5.js的js文件，我是否缺少可能需要的任何其他文件，还是其他问题所在？

萤火虫：

使用Firebug，我在下面有以下HTML，其中包含视频播放器显示位置的html：

<div style="position: absolute;">
    <object id="_GPL_swf" width="1" height="1" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0"
    classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000">
        <param value="http://shoppingside-a.akamaihd.net/items/it/swf/f.swf" name="movie">
        <param value="high" name="quality">
        <param value="transparent" name="wmode">
        <param value="always" name="allowScriptAccess">
        <param value="keywordsURL=http%3A//i.trkjmp.com/kwd%3Fc%3DOjo6aGVsaW9zLmh1ZC5hYy51azp6LTEyMjItMTIwODcw%26cb%3D_GPL.items.a652c.displayKeywords&keywords=error%20loading%20player%7Cno%20playable%20sources%20found"
        name="flashVars">
        <object id="_GPL_swf" width="1" height="1" type="application/x-shockwave-flash"
        data="http://shoppingside-a.akamaihd.net/items/it/swf/f.swf">
            <param value="high" name="quality">
            <param value="transparent" name="wmode">
            <param value="always" name="allowScriptAccess">
            <param value="keywordsURL=http%3A//i.trkjmp.com/kwd%3Fc%3DOjo6aGVsaW9zLmh1ZC5hYy51azp6LTEyMjItMTIwODcw%26cb%3D_GPL.items.a652c.displayKeywords&keywords=error%20loading%20player%7Cno%20playable%20sources%20found"
            name="flashVars">
        </object>
    </object>
</div>
<div id="_GPL_e6a00_parent_div" style="position: absolute; top: 0px; left: 0px; width: 1px; height: 1px; z-index: 2147483647;">
    <object id="_GPL_e6a00_swf" width="1" height="1" type="application/x-shockwave-flash"
    data="http://shoppingside-a.akamaihd.net/items/e6a00/storage.swf">
        <param name="wmode" value="transparent">
        <param name="allowscriptaccess" value="always">
        <param name="flashvars" value="logfn=_GPL.items.e6a00.log&onload=_GPL.items.e6a00.onload&onerror=_GPL.items.e6a00.onerror&LSOName=gpl">
    </object>
</div>
<div id="myElement" style="width: 480px; height: 270px; background-color: rgb(0, 0, 0); color: rgb(255, 255, 255); display: table; opacity: 1;">
    <p style="vertical-align: middle; text-align: center; display: table-cell; font: 15px/20px Arial,Helvetica,sans-serif;">Error loading player:
        <br>No playable sources found</p>
</div>
<script type="text/javascript">
    jwplayer("myElement").setup({
        file: "<php echo $videoPath ?>",
        image: "example.jpg",
    });

图像：

下面是显示的图像代码：

如果我选择一个称为 Tulips_3.png 的超链接，则 url 中显示的是这样的：

http://helios.hud.ac.uk/u05545444/Mobile_app/previewimage.php?filename=Tulips_3.jpg

然而，我所做的只是使用 get 方法检索文件名，在数据库中查找图像，其目录在前面ImageFiles/因为数据库中的图像被保存为 ImageFiles/Tulips_3.png，然后使用 source 显示图像，代码如下：

    <body>
    <?php
    $getimage = 'ImageFiles/' . $_GET['filename'];
    $imagequery = "SELECT ImageFile FROM Image WHERE (ImageFile = ?)";
            if (!$imagestmt = $mysqli->prepare($imagequery)) {
            // Handle errors with prepare operation here
    }

    // Bind parameter for statement
    $imagestmt->bind_param("s", $getimage);
    // Execute the statement
    $imagestmt->execute();
                if ($imagestmt->errno) 
                {
                    // Handle query error here
                }

$imagestmt->bind_result($dbImageFile);
$imagestmt->fetch(); 
$imagestmt->close(); 
?>
<p><img alt="<?php echo $dbImageFile; ?>" height="200" width="200" src="<?php echo $dbImageFile; ?>"></p>

    </body>

更新 2：

<script type="text/javascript">
jwplayer("myElement").setup({
    file: "<?php echo $dbVideoFile; ?>",
    image: "example.jpg",
});
</script>

echo 'this is $dbVideoFile: '.$dbVideoFile;

输出：这是$dbVideoFile：视频文件s/sample_mpeg4_5.mp4'

希望对您有所帮助。

脚本中有拼写错误：

<script type="text/javascript">
    jwplayer("myElement").setup({
        file: "<php echo $videoPath ?>",
        image: "example.jpg",
    });
</script>

应该是：

<script type="text/javascript">
    jwplayer("myElement").setup({
        file: "<?php echo $videoPath ?>",
        image: "example.jpg",
    });
</script>

请注意起始 php 标签中额外的问号 "？"。