HTML5 video method to achieve browser compatibility
In this article, we will share with you how to achieve browser compatibility for HTML5 video. In the past, flash was the best way to solve videos on web pages. As of now, it is still mainstream, such as those video websites such as Youku and Xiami. Such online music websites still use 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:
<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" />
Your browser does not support the video function, click here to download the video:
The video tag indicates that this is a video, and the width and height attributes respectively indicate the width and height (in 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:
This is roughly it. It is relatively simple. For more specific methods of using video, you can search for it. You can also see the extended reading link of this article. I won’t go into details here.
Step 3: Make compatibility for old browsers
As mentioned before, if the browser does not support video, the prompt content in video will be displayed. 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&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 achieve cross-browser compatible use of the video function.
The above content is about the method of achieving browser compatibility for HTML5 video. I hope it can help everyone.
Related recommendations:
The issue of browser compatibility with HTML5 and CSS3
What are the browsers that require compatibility verification in HTML
Implement music playback js code compatible with various browsers
The above is the detailed content of HTML5 video method to achieve browser compatibility. For more information, please follow other related articles on the PHP Chinese website!
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