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How to Capture Animations within Video
07-09-2013, 03:14 AM
Post: #4
RE: How to Capture Animations within Video
Thank you rlilly and pmeenan for the helpful explanations. I see that in my particular case, the trigger event is a scroll down on the webpage so will execute that using a script and then using the minimum test duration method mentioned I shall try a second time

(07-07-2013 10:46 AM)pmeenan Wrote:  It depends on when the animation is triggered (and to some extent how it is actually animated). WebPagetest will generally only run a test until the network activity finishes after the onload event so if the animation triggers after it has all downloaded then it may not be captured. This one looks like it is triggered pretty quickly though so that may not be the problem.

There is a "minimum test duration" under the advanced settings that you can use to get it to record longer.

The other issue may just be how the video itself is played. As Robert mentioned, WebPagetest does not record continuous video. It captures up to 10 screen shots per second but only when it detects explicit paint events (to keep the overhead to a minimum). If the video is hardware accelerated then it may not be detecting the events and triggering screen shots.

In general the goal is to be able to represent the user experience as well as possible but not necessarily for video capture of a video itself.
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RE: How to Capture Animations within Video - pganti - 07-09-2013 03:14 AM

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