[Docker] RAC Outpost - Guacd not compiled with H.264 YUV420 support #20332
Description
Describe the bug
The version of Guacd compiled and shipped with the RAC outpost docker doesn't support H.264 YUV420.
How to reproduce
- Try to connect to a
krdpserverendpoint (KDE Plasma 6.5) - It will fail to negotiate a connection
Expected behavior
- The connection establishes
(Guacd is compiled with H.264, see https://discuss.kde.org/t/krdp-and-apache-guacamole/18155/6 )
Screenshots
No response
Additional context
No response
Deployment Method
Docker
Version
2025.12
Relevant log output
org.kde.krdp: Unable to check file descriptor
org.kde.krdp: Closing session
org.kde.krdp: Closing Plasma Remote Session
org.kde.krdp: Session setup completed, start processing...
org.kde.krdp: New client connected: Unspecified platform Unspecified version
org.kde.krdp: User "username" authenticated successfully
org.kde.krdp: Video stream initialized
qt.core.qobject.connect: QObject::connect(ScreencastingStream, KRdp::PlasmaScreencastV1Session): invalid nullptr parameter
qt.core.qobject.connect: QObject::connect(ScreencastingStream, KRdp::PlasmaScreencastV1Session): invalid nullptr parameter
org.kde.krdp: Received caps:
org.kde.krdp: RDPGFX_CAPVERSION_8 AVC: false YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_81 AVC: false YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_10 AVC: false YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_101 AVC: true YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_102 AVC: false YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_103 AVC: false YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_104 AVC: false YUV420: true
org.kde.krdp: RDPGFX_CAPVERSION_105 AVC: false YUV420: true
org.kde.krdp: RDPGFX_CAPVERSION_106 AVC: false YUV420: true
org.kde.krdp: UNKNOWN_VERSION AVC: false YUV420: false
org.kde.krdp: RDPGFX_CAPVERSION_107 AVC: false YUV420: true
org.kde.krdp: Client does not support H.264 in YUV420 mode!