Embedded video in rss feed is not playable. I couldn't find an option that turns it on or off. There's a complaint in another bug that a video is playing in the background. A black box that represents the video is shown and is not clickable. A google search turned up no solutions to this issue. Reproducible: Always
bug 316278 complains that a video is playing in the background.
Created attachment 96705 [details] Screenshot I can reproduce using Akregator 5.1.1 (See screenshot with error message box) You can test using http://www.noticiasautomotivas.com.br/feed and any article with "VÍDEO" in Title.
I can play videos with Akregator 5.3.0 (Applications 16.08.1) Tested with embedded youtube videos (HTML5). Not tested with flash videos. You can test using http://www.noticiasautomotivas.com.br/feed and any article with "VÍDEO" in Title.
Fixed by https://phabricator.kde.org/D17638