我正在使用最新版本的VideoJS,并通过以下方式通过PHP放置我的视频：

像这样调用：$this-> streaming-> handleDownload($videoPath,“ video / mp4”);

该函数的定义如下：

public function handleDownload($file, $mime = "") {
     if (is_file($file)) {
        header("Content-Type: $mime");

        if (isset($_SERVER['HTTP_RANGE']))  { // do it for any device that supports byte-ranges not only iPhone
            header("X-Info: Starting Ranged Download of $file");
            $this->rangeDownload($file);
        } else {
            header("Content-Length: ".filesize($file));
            header("X-Info: Starting Straight Download of $file");
            readfile($file);
        }
    } else {
        header("HTTP/1.1 500 Internal Server Error");
        $msg = "The requested path was no file!";
    }
}

rangeDownload()定义为：

private function rangeDownload($file) {
    ob_end_clean();
    $fp = @fopen($file, 'rb');

    $size   = filesize($file); // File size
    $length = $size;           // Content length
    $start  = 0;               // Start byte
    $end    = $size - 1;       // End byte

    header("Accept-Ranges: 0-$length");
    if (isset($_SERVER['HTTP_RANGE'])) {

        $c_start = $start;
        $c_end   = $end;
        // Extract the range string
        list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
        // Make sure the client hasn't sent us a multibyte range
        if (strpos($range, ',') !== false) {
            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $start-$end/$size");
            exit;
        }
        header("X-Got-Range: $range, $range0");
        // If the range starts with an '-' we start from the beginning
        // If not, we forward the file pointer
        // And make sure to get the end byte if spesified
        if ($range0 == '-') {
            $c_start = $size - substr($range, 1);
        } else {
            $range  = explode('-', $range);
            $c_start = $range[0];
            $c_end   = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $size;
        }

        // End bytes can not be larger than $end.
        $c_end = ($c_end > $end) ? $end : $c_end;
        // Validate the requested range and return an error if it's not correct.
        if ($c_start > $c_end || $c_start > $size - 1 || $c_end >= $size) {

            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $start-$end/$size");
            // (?) Echo some info to the client?
            exit;
        }
        $start  = $c_start;
        $end    = $c_end;
        $length = $end - $start + 1; // Calculate new content length
        fseek($fp, $start);
        header('HTTP/1.1 206 Partial Content');
    }

    // Notify the client the byte range we'll be outputting
    header("Content-Range: bytes $start-$end/$size");
    header("Content-Length: $length");

    // Start buffered download
    $buffer = 1024 * 8;
    while(!feof($fp) && ($p = ftell($fp)) <= $end) {

        if ($p + $buffer > $end) {

            // In case we're only outputtin a chunk, make sure we don't
            // read past the length
            $buffer = $end - $p + 1;
        }
        set_time_limit(0); // Reset time limit for big files
        echo fread($fp, $buffer);
        flush(); // Free up memory. Otherwise large files will trigger PHP's memory limit.
    }

    fclose($fp);
}

我正在通过PHP传递视频,因为仅在登录时文件才可见.
我使用“部分内容/范围”来做这些事情,因为我希望能够在“位置”栏的中间单击,并且视频应该从那里开始播放.

一切都适用于Chrome,较新的Safari,iOS,但是(由于Flash后备)在IE或Firefox(视频为mp4)中不起作用(也许加载时间太长)

Range可以在Chrome中运行,但是很好,VideoJS的Flash版本甚至不要求Range-Download,因此它获得了另一个版本.

如果我在Firefox中直接播放视频(使用PHP流,但不使用VideoJS)(只需在URL栏中调用Video-URL),它将直接启动并在播放时加载； VideoJS没有

我需要更改使视频开始直接在VideoJS Flash版本中播放吗？

解决方法:

我已经找到了解决方案(偶然；-))

问题是Flash播放器要求将视频作为完整文件.只要服务器不回答,就存在播放器不要求的流版本(接受范围：0- $size).

所以我设置了Header并且它起作用了.

因此,针对所有与VideoJS Flash后备广告有关的问题的小教程：

>视频需要通过MP4Box进行编码(请参见MP4 in Video.js not playing until fully loaded)
> PHP Passthrough脚本需要发送以下标头：

header(“ Content-Type：$videoMimeType”);
header(“ Content-Length：$videoByteCount”);
header(“接受范围：0- $videoByteCount”);
>如果要处理范围(由isset($_ SERVER [“ HTTP_RANGE”])标识),则还需要指定这些标头：

header(“ Content-Range：bytes $startByte- $endByte / $videoByteCount”);

这对我有用(请参阅我的问题中的代码).它可以与带有Flash的Chrome,FF,iOS,Safari和Safari(IE尚未经过测试)一起使用,并与mp4-Files一起使用HTML5