What is the prescribed behavior with "autoplay"? When should the UA start play? <br> - "canplay" <br> - "canplaythrough" <br> - "HAVE_FUTURE_DATA"<br> - "HAVE_ENOUGH_DATA"<br>
<br>Rik.<br>
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<br clear="all">Rik Sagar, San Jose, CA 95124<br>Visit : <a href="http://sagar.org/">http://sagar.org/</a><br> <br> +1-408-799-4589 (mobile)<br> 0113-815-1583 (from UK)<br>
<br><br><div class="gmail_quote">On Thu, Aug 26, 2010 at 5:05 AM, Herman Hassel <span dir="ltr"><<a href="mailto:herman@agrabush.com">herman@agrabush.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im"> On 26.08.2010 06:58, Eric Carlson wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
A static attribute that specifies a minimum buffer size or duration will only help users with exactly the bandwidth the for the attribute value - anyone with less bandwidth will still run out of data, and anyone with more bandwidth will have to wait longer than necessary.<br>
</blockquote></div>
Yes, but this also depends on how a developer would use the buffer attribute, for our use we wouldn't set it too high. (3-5 seconds or so is what we would favor at this time). A low bandwidth user would run out of data, but he would get at least 5 seconds of video before this would happen. From my experience with how users interact with video an end user will notice the loaded bar not moving as fast as the scrubber, but at least we've given him a teaser of the full content before he needs to wait. For a user with exact or higher bandwidth, the 3-5 second buffer loads fast enough to not break the experience. :)<div class="im">
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<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
If you want to prevent users from starting playback too early, use a custom controller and wait for the 'canplaythrough' event. It is fired when the UA estimates that the amount of time it takes to play the movie is less than the time it will take to download the rest of the movie. How can a static attribute be more accurate than this?<br>
</blockquote></div>
That would be more accurate if our goal is for the end users to start the video when they can view the whole video at once, but this would also mean a much longer wait for any video at all for the low bandwidth users. We want to show video as fast as possible to our users, but we wish to stop the initial stutter that occurs if we start playing a video at the same time as it starts loading. Giving a low bandwidth user a few seconds of video should suffice in most cases, and it would then be up to the low bandwidth end user if he wanted to pause and wait for more video or move on. We'd get too many users just moving on without any video if we were to impose the full video on them before allowing playback. My proposal is to make the buffer attribute optional, not a requirement, and it would not break listening to the 'canplaythrough' event for those cases where you don't want to present a video until the user can watch the whole thing. :)<div class="im">
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-- <br>
Herman Hassel<br>
Agrabush Design<br>
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mail: <a href="mailto:herman@agrabush.com" target="_blank">herman@agrabush.com</a><br>
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