[iamvinbas]

Fixes #2.

Cause

Video clips are played by a <video> element that was never added to the page. The KDE Plasma Integration browser extension (installed by default on many Linux desktops through a system-wide browser policy, Brave and Chrome alike) wraps document.createElement and new Audio(). When a detached media element starts playing, the extension inserts it into the page and immediately removes it again, so it can pick it up for its media controls (page-script.js, "addPlayerToDomEvadingAutoPlayBlocking"). Chromium pauses a media element that is removed from the page, so play() rejected with:

The play() request was interrupted because the media was removed from the document.

…and the clip never went on air. This also explains the reporter's workaround: the policy installs the extension into a fresh profile in the background, so only the first launch of a new ~/.local/share/streamFree/browser profile ran without it.

Reproduced in Chrome by injecting the extension's real page script at document start: the exact error, goo.gl link included, appears without this change and disappears with it.

Fix

keepInPage() (in util.js) puts media elements that are used only for their sound or frames into an invisible 1 px container in the page before play(). The extension leaves elements that are already in the page alone. Used for:

• the clip player (playMedia), removed from the page when the clip stops;
• the muted <audio> element that Chrome needs to deliver a WebRTC guest's audio to Web Audio. The extension paused and restarted it, which could cause a brief audio drop.

Tests

• New browser test: a video clip plays even with an extension that moves detached media. It mimics the extension's behaviour with a small page script of our own (the extension's code is GPL). It fails without this change (the clip never goes on air) and passes with it.
• Full browser suite: 18/18 passing locally.

Not tested

• Brave on Linux with the real extension. The reporter's environment was reproduced with the extension's actual page script in Chrome on macOS.

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