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    <p>From the <a href="http://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/Using_HTML5_Audio_Video/AudioandVideoTagBasics/AudioandVideoTagBasics.html#//apple_ref/doc/uid/TP40009523-CH2-SW9" rel="noreferrer">Apple developer documentation</a>:</p> <blockquote> <p>Note: The preload attribute is supported in Safari 5.0 and later. Safari on iOS never preloads.</p> </blockquote> <p>According to Apple the desired behavior on a mobile device is that loading only starts after you actively request the resource so as to not waste bandwidth or battery.</p> <p>Regarding your question this means that Apple is adhering to the spec. Since no preload occurs and loading only starts after you click the play button the <code>readyState</code> is zero before that point in time.</p> <p>However, the <code>video</code> tag has special events which are supposed to give more information than <code>readyState</code>.</p> <ul> <li><code>onCanplay</code></li> <li><code>onCanplaythrough</code></li> <li><code>onProgress</code></li> </ul> <p>Again, quoting the <a href="http://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/Using_HTML5_Audio_Video/ControllingMediaWithJavaScript/ControllingMediaWithJavaScript.html#//apple_ref/doc/uid/TP40009523-CH3-SW4" rel="noreferrer">Apple developer library (Using DOM Events to monitor load progress)</a></p> <blockquote> <p>Note: On the iPad, Safari does not begin downloading until the user clicks the poster or placeholder. Currently, downloads begun in this manner do not emit progress events.</p> </blockquote>
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    1. POreadyState issue with HTML5 video elements on ios safari
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    1. COThanks for the answer. I'm still not getting how script-driven playback is supposed to work. On the one hand, if you disregard the readyState and invoke .play() or access some video attributes anyway, you'll get an INVALID_STATE_ERR. On the other hand, you can't wait for the readyState to change.
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    2. COBtw, in another example, I could see the the first video frame after loading the page, so there must haven been something loaded.
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    3. COThe frame you saw probably was the poster image which you can assign to the video to show something. The video has special events which I added to my answer.
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