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WebTorrent: Autoplay is sometimes blocked if media metadata is not ready yet

See original GitHub issue

Description

If the media element does not have metadata available immediately when the media viewer loads, then autoplay will fail with a DOMException.

Steps to Reproduce

Load the torrent from https://ia802608.us.archive.org/18/items/gd1975-06-17.aud.unknown.87560.flac16/gd1975-06-17.aud.unknown.87560.flac16_archive.torrent
Start the download.
Scroll to the bottom of the file list and select the last MP3 file in the list (file number 111). (This is so that the file data is not likely to be downloaded by webtorrent yet.)
The file should eventually start playing. There should be no warning that autoplay was blocked.

Actual result:

Media sometimes does not autoplay.

Expected result:

Media should always autoplay.

Reproduces how often:

Intermittent issue

Brave version (brave://version info)

master

Issue Analytics

State:
Created 4 years ago
Comments:11 (6 by maintainers)

Top GitHub Comments

1reaction

darkdhcommented, Sep 20, 2019

The thing we added above is “Content Setting”, the brave autoplay list is beyond that. Every time autoplay permission request coming, we check brave autoplay whitelist first and then check content setting if host doesn’t match anything in the whitelist

0reactions

btlechowskicommented, Sep 30, 2019

Verification passed on

Brave	0.69.129 Chromium: 77.0.3865.90 (Official Build) (64-bit)
Revision	58c425ba843df2918d9d4b409331972646c393dd-refs/branch-heads/3865@{#830}
OS	Ubuntu 18.04 LTS

The issue still reproduces. Logged https://github.com/brave/brave-browser/issues/6195.

Verification PASSED on macOS 10.14.6 x64 using the following build:

Brave	0.69.129 Chromium: 77.0.3865.90 (Official Build) (64-bit)
Revision	58c425ba843df2918d9d4b409331972646c393dd-refs/branch-heads/3865@{#830}
OS	macOS Version 10.14.6 (Build 18G95)

Verified the STR/test case outlined under https://github.com/brave/brave-browser/issues/5471#issue-474876804

Verification passed on

Brave	0.69.130 Chromium: 77.0.3865.90 (Official Build) (64-bit)
Revision	58c425ba843df2918d9d4b409331972646c393dd-refs/branch-heads/3865@{#830}
OS	Windows 10 OS Version 1803 (Build 17134.1006)

Verified the STR/test case outlined under https://github.com/brave/brave-browser/issues/5471#issue-474876804

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