Improve preload attribute support

Won’t fix Issue #7117594


Jordan M.
Apr 5, 2016
This issue is public.
Found in
  • Microsoft Edge
  • Internet Explorer
Reported by 3 people

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Steps to reproduce

I’m seeing some definite weirdness with the preload attribute for video elements in both IE11 and Edge. First, I’m going by what’s documented, which is not super clear:
We’re injecting an element that looks like this:

<video id="thing" style="background: none; width: calc(100% + 1px); height: 100%; display: block; visibility: visible; position: relative; min-height: 10px; min-width: 10px;" poster="//"><source id="video" src="" type="video/mp4" /></video>

We have tried various configurations for the preload attribute in the video element, but in every case the browser responds in the same way – it’ll load the entire content-range specified in the GET request that’s made without the video ever being interacted with.
Here’s the network request: – and the corresponding video element those came from: – As mentioned before, this behavior is the same no matter what we add as preload attributes to the injected video element.
I would expect this to only load as specified by the preload attribute added to the element, but that does not seem to be the case.
Above linked images have also been attached to the report.


Comments and activity

  • Microsoft Edge Team

    Changed Assigned To to “Venkat K.”

    Changed Assigned To from “Venkat K.” to “Steve B.”

    Changed Status to “Confirmed”

    Changed Assigned To from “Steve B.” to “Ibrahim O.”

    Changed Assigned To to “Venkat K.”

    Changed Assigned To from “Venkat K.” to “Steve B.”

    Changed Title from “video html element preload attribute ignored if element injected via js” to “Improve preload attribute support”

    Changed Assigned To from “Steve B.” to “Stephen E.”

    Changed Status from “Confirmed”

    Changed Status to “Won’t fix”

  • We will investigate what improvements can me made in the next Windows release - the one after RS1.

    All the best,
    The MS Edge Team

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