ios - HTML5 video for iPhone / iPad. How to detect connection speed? -

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i need stream video in safari iphone/ipad best possible quality.

i created 2 video files: 1 in low-quality slow 3g speed, 1 in hi-quality wifi broadband streaming. noticed apps (youtube example) able detect if mobile device running 3g or wifi, , select small sized video rather hi-quality video.

now dom / javascript code, $v value replaced php , contains video filename:

<video id="thevideo" src="streaming/video_<?=$v ?>.m4v" width="600" height="360" width="640" height="360" preload="preload" controls="controls" autoplay="autoplay"> flowplayer/video<?=$v ?>.m4v </video>      <script type="text/javascript"> var myvideo = document.getelementbyid("thevideo");  myvideo.load(); myvideo.play(); </script>

can write in javascript / webkit able detect connection mode?

thanks all.

  • i assuming in own application:

you use apple's reachability determine connection type in application before sending uiwebview's request. can modify request's url adding query:

//determine connection type via reachability  myurlstring = [myurlstring stringbyappendingstring:[nsstring stringwithformat:@"?conntype=%@", *conntypestring]];  //then send request page.

then, parse url query in php determine video url should used.

  • if not, need test connection speed via third-party javascript or php script.

example: http://jan.moesen.nu/code/php/speedtest/index.php?numkb=512


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