April 2013
Beginner
750 pages
20h 21m
English
Content preview from HTML5 Canvas, 2nd Edition
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Altering the Width and Height of the Video
In our first example, we showed how you could embed a video
without changing the default width or height. However, there are many
good reasons why you might want to change the default width and height
of a video in the HTML page, such as fitting it into a particular part
of the page or enlarging it so that it is easier to see. Similar to
embedding an image into HTML with the <img> tag, a video will scale to
whatever width and height you provide in the <video> tag. Also, like with the
<img> tag, this scale does not
affect the size of the object downloaded. If the video is 5 megabytes at
640×480, it will still be 5 megabytes when displayed at 180×120—just
scaled to fit that size.
In Example 6-3 (CH6EX3.html), we have scaled the same video to three different sizes and displayed them on the same page. Figure 6-3 shows what this looks like in HTML (again, rendered in the Google Chrome browser).
Figure 6-3. Controlling video width and height in the embed
Example 6-3. Basic HTML5 video in three sizes
<!doctype html><htmllang="en"><head><metacharset="UTF-8"><title>CH6EX3: Basic HTML5 Video: 3 Sizes</title></head><body><div><videoautoplayloopcontrolswidth="640"height="480"id="thevideo"><sourcesrc="muirbeach.webm"type='video/webm; codecs="vp8, vorbis"'><sourcesrc="muirbeach.mp4"type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'
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