Is there an existing issue for this?
CefSharp Version
131.3.50
Operating System
Windows 10
Architecture
x64
.Net Version
4.8
Implementation
WinForms
Reproduction Steps
Set up a CefSharp-based application using the same Chromium version bundled with SEB 3.9.0 (Chromium 120+).
Create or load an HTML page with the following markup:
Run the application and navigate to the test page.
Press play on the video element.
Expected behavior
The embedded OGV video (Theora video + Vorbis audio) should play with both video and audio rendering, consistent with prior CefSharp builds (e.g., Chromium 114 era) and current Chromium browsers with proper codec support.
Actual behavior
Only the audio portion plays — the video remains a black or blank screen.
Regression?
worked fine on previous versions.
Known Workarounds
N/A
Does this problem also occur in the CEF Sample Application
Yes using WPF/OffScreen command line args
Other information
No response
Is there an existing issue for this?
CefSharp Version
131.3.50
Operating System
Windows 10
Architecture
x64
.Net Version
4.8
Implementation
WinForms
Reproduction Steps
Set up a CefSharp-based application using the same Chromium version bundled with SEB 3.9.0 (Chromium 120+).
Create or load an HTML page with the following markup:
Run the application and navigate to the test page.
Press play on the video element.
Expected behavior
The embedded OGV video (Theora video + Vorbis audio) should play with both video and audio rendering, consistent with prior CefSharp builds (e.g., Chromium 114 era) and current Chromium browsers with proper codec support.
Actual behavior
Only the audio portion plays — the video remains a black or blank screen.
Regression?
worked fine on previous versions.
Known Workarounds
N/A
Does this problem also occur in the CEF Sample Application
Yes using WPF/OffScreen command line args
Other information
No response