UIWebview dos不播放mp4视频

Question

UIWebview dos不播放mp4视频

iac*_*ach 9 video screen frame uiwebview ios

我尝试使用UIWebView从网站(带有HTML5视频标签)播放.mp4视频.iPhone/iPad设备和模拟器仅显示带有敲击播放按钮的黑框.如果我只是在Safari Mac版本上调用此网站,则可以播放它.怎么了？

它不是本地文件.html看起来像这样:

    <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta charset="utf-8" />
        <link rel="stylesheet" type="text/css" href="../css/shared-culture.css" />
    </head>
    <body>
        <section class="base">
            <hgroup>
                <h1>creative commons</h1>
                <h2>a shared culture</h2>
            </hgroup>

                <p>To celebrate our 2008 fundraising campaign, Creative Commons has
                    released “A Shared Culture,” a short video by renowned filmmaker <a
                        href="http://en.wikipedia.org/wiki/Jesse_Dylan">Jesse Dylan</a>. Known for
                    helming a variety of films, music videos, and the Emmy Award-winning <a
                        href="http://my.barackobama.com/page/invite/yeswecanvideo">“Yes We Can”</a>
                    Barack Obama campaign video collaboration with rapper will.i.am, Dylan created
                    “A Shared Culture” to help spread the word about the Creative Commons mission. </p>
                <!-- height="240" width="360" -->
                <video id="video1" controls="controls">
                    <source src="../video/shared-culture.mp4" type="video/mp4"/>
                    <source src="../video/shared-culture.webm" type="video/webm"/>
                    <div class="errmsg">
                        <p>Your Reading System does not support (this) video.</p>
                        <pre><code>
&lt;video id="video1" controls="controls"&gt;                    
  &lt;source src="../video/shared-culture.mp4" type="video/mp4"/&gt;
  &lt;source src="../video/shared-culture.webm" type="video/webm"/&gt;    
&lt;/video&gt;
                        </code></pre>
                    </div>
                </video>
                <p>In the video, some of the leading thinkers behind Creative Commons
                    describe how the organization is helping “save the world from failed sharing”
                    through free tools that enable creators to easily make their work available to
                    the public for legal sharing and remix. Dylan puts the Creative Commons system
                    into action by punctuating the interview footage with dozens of photos that have
                    been offered to the public for use under CC licenses. Similarly, he used two
                    CC-licensed instrumental pieces by Nine Inch Nails as the video’s soundtrack
                    music. These tracks, “17 Ghosts II” and “21 Ghosts III,” come from the Nine Inch
                    Nails album Ghosts I-IV, which was released earlier this year under a Creative
                    Commons BY-NC-SA license. (See <a
                        href="http://creativecommons.org/videos/a-shared-culture">attribution</a>.)
                </p>

        </section>

    </body>
</html>

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Answer 1

Vin*_*yne 9

它可能不是iPhone友好的格式.

将mp4文件拖到iMovie中,然后单击" 共享" - >" 导出电影",然后选择一种与iPhone兼容的格式.

Answer 2

Bre*_*don 3

听起来像是编解码器问题。如果您在计算机上的 VLC 中打开该文件，请转到“窗口”->“媒体信息”->“编解码器详细信息”，您可以看到该文件使用的编解码器。这里的答案链接到Apple的文档，您可以在其中找到支持的视频和音频编解码器：

https://developer.apple.com/library/ios/#documentation/mediaplayer/reference/MPMoviePlayerController_Class/Reference/Reference.html

https://developer.apple.com/library/ios/#documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html

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