It is not possible to play embedded videos in the presentation mode. This affects PDF slides created with the beamer/multimedia latex package. Initially, no controls are shown on the slide with the video. In the normal mode, video controls appear when the video is clicked with the mouse. However, in the presentation mode, evince goes to the next page when one clicks with the mouse so that the controls do not appear and the video can only be played by exiting the presentation mode. Playing videos works fine in presentation mode with the okular PDF-viewer.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: evince 3.28.4-0ubuntu1
Uname: Linux 4.15.0-041500rc6-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Apr 25 16:15:43 2019
InstallationDate: Installed on 2015-11-05 (1267 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
SourcePackage: evince
UpgradeStatus: Upgraded to bionic on 2018-05-24 (335 days ago)
Thank you for your bug report, could you add a file example to the bug?