Question

176

Autoplay HTML5 audio/video in iOS5

rated 0 times [ 182] [ 6] / answers: 1 / hits: 15626 / 13 Years ago, tue, november 8, 2011, 12:00:00

I have an HTML5 web-app that has sound effects. I'm trying to get these effects working in iOS5 and can't for the life of me.

Wondering if anyone has any work-arounds to get JS control of an HTML5 audio/video control in iOS5.

Or even a way to control multiple audio files with one click. As it stands right now, if I have 10 sound effects, I'd need 10 user clicks to get control of all of them, which is absurd!

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karolinab

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4 Years ago

answered 13 Years ago mercedez · Accepted Answer

Absurb, but you have to see it from iPhone or any mobile phone's point of view. It is a mobile phone going over a cellular network with bandwidth limitations, which many people know about from the recent Sprint commercial. They do not want users going over their bandwidth limit because some site is sending their phone a large amount of data without them taking action themselves.

The following is an excerpt from the official Safari Developer Library with more details.

User Control of Downloads Over Cellular Networks

In Safari on iOS (for all devices, including iPad), where the user may
be on a cellular network and be charged per data unit, preload and
autoplay are disabled. No data is loaded until the user initiates it.
This means the JavaScript play() and load() methods are also inactive
until the user initiates playback, unless the play() or load() method
is triggered by user action. In other words, a user-initiated Play
button works, but an onLoad=play() event does not.

This plays the movie: <input type=button value=Play onClick=document.myMovie.play()>

This does nothing on iOS: <body onLoad=document.myMovie.play()>