Created attachment 2053573 [details] Reproduction screencast depicting the problem and how installing VLC remediates it. Created attachment 2053573 [details] Reproduction screencast depicting the problem and how installing VLC remediates it. All quotations are from [`bugs.kde.org/show_bug.cgi?id=480569`][1]. Description of Problem: : When playing [`commons.wikimedia.org/w/index.php?title=File:First_8K_Video_from_Space_-_Ultra_HD_VP9.webm`][2], the viewport becomes entirely `#FFFFFF`. This can be remediated by installing `vlc`. Version-Release Number of Selected Component: : `24.08.2-1.fc40` How Reproducible: : Consistently. Steps to Reproduce: : > 1. Download the mentioned video file. : > : > 2. Try to play it on Dragon Player. Actual Results: : > Video stream turns white. Expected Results: : > Video stream remains normal. Additional Info: : > SOFTWARE/OS VERSIONS : > : > : > ~~~YAML : > : > Operating System: Fedora Rawhide : > : > KDE Plasma Version: 5.92.0 (desktop says 6.0 RC1) : > : > KDE Frameworks Version: 5.248.0 : > : > Qt Version: 6.6.1 : > : > ~~~ : > : > ADDITIONAL INFORMATION : > : > : Patented codecs are not installed. [1]: https://bugs.kde.org/show_bug.cgi?id=480569#c0 [2]: https://commons.wikimedia.org/w/index.php?title=File:First_8K_Video_from_Space_-_Ultra_HD_VP9.webm&oldid=910297029
I can reproduce this bug exactly. Video turns white by default, but after installing VLC it plays normally *in Dragon*.
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(In reply to Rua from comment #1) > I can reproduce this bug exactly. Video turns white by default, but after > installing VLC it plays normally *in Dragon*. Can you still reproduce this?
(In reply to Mr. Beedell, Roke Julian Lockhart from comment #3) > (In reply to Rua from comment #1) > > > I can reproduce this bug exactly. Video turns white by default, but after > > installing VLC it plays normally *in Dragon*. > > Can you still reproduce this? I'm no longer using Fedora, so I can't test this anymore, sorry.
Created attachment 2089053 [details] A Screenshot Of Corrupted Playback In Dragon Player in F42 (In reply to Mr. Beedell, Roke Julian Lockhart from comment #3) I can reproduce a similar problem in an F42 VM. IDK whether it directly relates to this, but the symptoms are similar enough that they're probably merely different symptoms of the same cause.
Created attachment 2089054 [details] A Screenshot Of A Corrupted Preview In Spectacle After Saving A Screencast in F42 (In reply to Mr. Beedell, Roke Julian Lockhart from comment #5) However, considering that it reproduces in Spectacle, this should either be re-triaged to a lower-level component, or reported upstream.