Created attachment 8928314 [details] Youtube video displaying the issue OS: Windows 8.1 Firefox versions tested: - 59.0a1 (2017-11-14), 64bit - 57.0, 64bit Steps to reproduce: - View a video (tested on youtube.com, vimeo.com, imgur.com, bbc.com) Actual results: - Distortions seeming to separate magenta and green (see screenshot) Expected results: - Normal colors Other investigation: - Restarting in safe mode *DOES* fix the problem - The Firefox screenshot feature *DOES* show normal colors - Using a clean profile does *NOT* change the results - Disabling plugins Cisco OpenH264 and Widevine does *NOT* change the results
Please make sure you have the latest graphics driver: https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration
Can you try setting media.wmf.use-nv12-format to false and see if that fixes the issue? thank you
Setting "media.windows-media-foundation.use-nv12-format" to false fixes the issue. It has also been fixed in the latest nightly.