Bug 207887 - <video> play() on user touch action fails to play video
Summary: <video> play() on user touch action fails to play video
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Media (show other bugs)
Version: Safari 13
Hardware: iPhone / iPad iOS 13
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2020-02-18 05:13 PST by Jerry Jongerius
Modified: 2020-02-18 15:52 PST (History)
1 user (show)

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Description Jerry Jongerius 2020-02-18 05:13:33 PST 
I created a custom video control (via canvas) to interactively control video playback (speed, forward, reverse, etc).  It works great.  Until I tested on an iPad (13.3.1).  Everything works, except for 'play()', which is kind of a huge show stopper.  The custom control is no longer viable.

Here is a very small test case that illustrates the problem:

    https://www.duckware.com/test/webkit/iosplayvideofails.html

In the bordered canvas box under the video:

  (1) A touch, slide, release FAILS to play the video
  (2) A touch, release DOES play the video

So somehow the 'slide' is the issue.  If the video is first muted (button provided), a 'slide to play' in the custom control works, which appears to be a huge tip off that Safari is intentionally blocking play() from working.

Is this a bug?  If not, how can a user-initiated 'slide' play a video?
Comment 1 Radar WebKit Bug Importer 2020-02-18 15:52:54 PST 
<rdar://problem/59569889>