Sharing of plans to enhance browser compatibility of the video tag in HTML5

When using HTML5, you should consider browser compatibility issues including desktop and mobile. Especially in terms of video, browser support for decoding will be different, so let’s share an enhancement to the browser compatibility of the HTML5 video tag. Solution sharing, friends who need it can refer to

In the past, flash was the best way to solve videos on web pages. Up to now, it is still mainstream, such as those video websites like Youku and online music like Xiami. The website still uses flash to provide playback services. But this situation will change with the development of HTML5. As far as video is concerned, HTML5 adds video to implement the function of playing videos online.

Using HTML5 video, you can easily use JavaScript to control the video content, etc. The function is very powerful, and the code is relatively small to speed up the loading speed. In addition, cross-platform is relatively good, especially some tablets, mobile phones, etc. For example, Apple's products do not support flash and only support the video function in HTML5.

But the compatibility issue of HTML5 is a flaw. We can use video to play videos on web pages, but visitors using early browsers may not be able to watch this video normally. In addition, due to the historical origin of video encoders, various browsers support different video formats. To deal with these problems and want to use the HTML5 video function in web pages, you can follow the following three steps.

Step one: Prepare multi-format video files in advance

Due to the copyright issue of the encoder, different browsers have different compatibility with video formats. Currently, no video format is compatible with all browsers, and the only solution is to convert the video into multiple formats.

First, prepare a video in mp4 format, which can be used on Apple devices; secondly, prepare a video in ogv format, which can be used in Firefox; finally, prepare a video in webm format, which can be used on Google Chrome, etc. Webm was proposed by Google. It is open source, free, and is likely to become a video format compatible with all browsers.

The trouble with preparing a multi-format browser is converting the formats. Domestic video conversion tools have relatively few functions, the conversion format may not be as good as the last two above, and the quality varies, and registration is often required before use. Recommend a foreign tool, Online converter, a free online video conversion tool. You don't even need to install software, just select the corresponding target format, then upload the video, configure the parameters and you can convert it. If you don’t have the right tools, you can give it a try.

Step 2: Write the corresponding HTML5 video code

The video in HTML5 is actually a simple tag that contains some video-related information. I will directly give the specific code below, and then briefly explain it: The

<video width=”800” height=”374”>  
    <source src=”my_video.mp4” type=”video/mp4” />  
    <source src=”my_video.ogv” type=”video/ogg” />  
    <source src=”my_video.webm” type=”video/webm” />  
    你浏览器不支持 video 功能，点击这里下载视频： <a href=”video.webm”>下载视频</a>.   
</video>

video tag indicates that this is a video, and the width and height attributes respectively indicate the width and height (unit pixels) of the video content. The video tag can contain the source tag, which is used to indicate the referenced video and the format and type of the video. In order to ensure downward compatibility, we also added a prompt in the video tag. This sentence will not be displayed in browsers that support the video tag. If it is not supported, it will be displayed. Here, a video download address is also added. If the browser does not support it, users can choose to download it and watch it.

One thing to note in particular is that your host must be able to handle these video requests correctly. Make sure your host sends the correct MIME type in the Content-Type header when requested for these videos. If you are not sure, you can consult the hosting service provider or add it yourself. If the host supports .htaccess, you can add the following statement to the .htaccess file:

AddType video/ogg .ogv
AddType video/mp4 .mp4
AddType video/webm .webm

That’s it, it’s relatively simple. For more specific instructions on how to use video, you can search for it, or see this article. Further reading links will not be repeated here.

Step Three: Make compatibility for old browsers

As mentioned before, if the browser does not support video, it will Display the prompt content in the video. So for old browsers, we can replace this prompt content with traditional flash. In this way, when the browser is not compatible with the video tag, the flash version of the video will be displayed. For example:

<video width=”800” height=”374”>  
    <source src=”my_video.mp4” type=”video/mp4” />  
    <source src=”my_video.ogv” type=”video/ogg” />  
<object width="800" height="374" type="application/x-shockwave-flash" data="fallback.swf">  
    <param name="movie" value="fallback.swf" />  
    <param name="flashvars" value="autostart=true&amp;file=video.flv" />  
</object>  
</video>

can be directly written into the video tag according to the original normal flash introduction method. In this way, we have achieved cross-browser compatible video function usage

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