SUMMARY The QWebEngine in KDE runtime can't play H.264 videos on the Internet. It seems that the support for proprietary codecs in QWebEngine is not enabled. Is it possible to enable it? See https://doc.qt.io/qt-5/qtwebengine-features.html Or if there is a license problem, is it OK to make it as a runtime plugin or as a BaseApp? STEPS TO REPRODUCE 1. Use QWebEngine in Flatpak runtime to open a website with H.264 videos OBSERVED RESULT Video cannot be played EXPECTED RESULT Video should be played SOFTWARE/OS VERSIONS Linux/KDE Plasma: LinuxMint 19.1 Mate Qt Version: 5.12 ADDITIONAL INFORMATION Flatpak runtime version: org.kde.Platform//5.12
Git commit 3493e4c996eff4538de1a31ed941b1e309b0b2ae by Aleix Pol. Committed on 29/01/2019 at 14:41. Pushed by apol into branch 'qt5.12lts'. Get some control over qtwebengine support proprietary codecs from webengine Use ICU Build webp support Use the fdo platform's ffmpeg M +4 -0 org.kde.Sdk.json https://commits.kde.org/flatpak-kde-runtime/3493e4c996eff4538de1a31ed941b1e309b0b2ae