Just in case I've just verified that the issue occurs both when watching videos with codecs that are and are not hardware-supportted by my GPU.
Nevertheless in case it matters I have the following video-related packages installed: intel-media-va-driver:amd64 24.2.5+dfsg1-1 intel-media-va-driver:i386 24.2.5+dfsg1-1 i965-va-driver:amd64 2.4.1+dfsg1-1 i965-va-driver:i386 2.4.1+dfsg1-1 firmware-intel-graphics 20240610-1 the following packages are NOT installed: intel-media-va-driver-non-free i965-va-driver-shaders LIBVA_DRIVER_NAME env var is NOT defined vlc has "Hardware-accelerated decoding" set to "Automatic" When playing videos with H264 codec `intel_gpu_top` shows that the video engine is being used, for all other codecs it is idle. Firefox config has been modified according to https://wiki.debian.org/Firefox#Hardware_Video_Acceleration instructions: launcher is defined as the below: Exec=env MOZ_X11_EGL=1 /usr/lib/firefox-esr/firefox-esr %u related config variables are defined as follows: media.ffmpeg.vaapi.enabled true media.ffvpx.enabled false media.av1.enabled false I have verified with `intel_gpu_top` that the video engine is being used when watching videos in Firefox. When I was trying to reproduce the bug on Ubuntu-24.04 I modified the config the same way and also verified with intel_gpu_top that the video engine was active. vainfo output: libva info: VA-API version 1.22.0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_22 libva info: va_openDriver() returns 0 vainfo: VA-API version: 1.22 (libva 2.12.0) vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 24.2.5 () vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointEncSliceLP VAProfileH264High : VAEntrypointVLD VAProfileH264High : VAEntrypointEncSliceLP VAProfileJPEGBaseline : VAEntrypointVLD VAProfileJPEGBaseline : VAEntrypointEncPicture VAProfileH264ConstrainedBaseline: VAEntrypointVLD VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP VAProfileVP8Version0_3 : VAEntrypointVLD VAProfileHEVCMain : VAEntrypointVLD VAProfileHEVCMain10 : VAEntrypointVLD VAProfileVP9Profile0 : VAEntrypointVLD VAProfileVP9Profile2 : VAEntrypointVLD vdpauinfo output: display: :0 screen: 0 libva info: VA-API version 1.22.0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_22 libva info: va_openDriver() returns 0 API version: 1 Information string: OpenGL/VAAPI backend for VDPAU Video surface: name width height types ------------------------------------------- 420 4096 4096 NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 NV24 YV24 P010 P016 Y_U_V_444_16 422 4096 4096 NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 NV24 YV24 P010 P016 Y_U_V_444_16 444 4096 4096 NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 NV24 YV24 P010 P016 Y_U_V_444_16 420_16 4096 4096 NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 NV24 YV24 P010 P016 Y_U_V_444_16 422_16 4096 4096 NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 NV24 YV24 P010 P016 Y_U_V_444_16 444_16 4096 4096 NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 NV24 YV24 P010 P016 Y_U_V_444_16 Decoder capabilities: name level macbs width height ---------------------------------------------------- MPEG1 --- not supported --- MPEG2_SIMPLE --- not supported --- MPEG2_MAIN --- not supported --- H264_BASELINE 51 16384 2048 2048 H264_MAIN 51 16384 2048 2048 H264_HIGH 51 16384 2048 2048 VC1_SIMPLE --- not supported --- VC1_MAIN --- not supported --- VC1_ADVANCED --- not supported --- MPEG4_PART2_SP --- not supported --- MPEG4_PART2_ASP --- not supported --- DIVX4_QMOBILE --- not supported --- DIVX4_MOBILE --- not supported --- DIVX4_HOME_THEATER --- not supported --- DIVX4_HD_1080P --- not supported --- DIVX5_QMOBILE --- not supported --- DIVX5_MOBILE --- not supported --- DIVX5_HOME_THEATER --- not supported --- DIVX5_HD_1080P --- not supported --- H264_CONSTRAINED_BASELINE 51 16384 2048 2048 H264_EXTENDED --- not supported --- H264_PROGRESSIVE_HIGH --- not supported --- H264_CONSTRAINED_HIGH --- not supported --- H264_HIGH_444_PREDICTIVE --- not supported --- VP9_PROFILE_0 --- not supported --- VP9_PROFILE_1 --- not supported --- VP9_PROFILE_2 --- not supported --- VP9_PROFILE_3 --- not supported --- HEVC_MAIN --- not supported --- HEVC_MAIN_10 --- not supported --- HEVC_MAIN_STILL --- not supported --- HEVC_MAIN_12 --- not supported --- HEVC_MAIN_444 --- not supported --- HEVC_MAIN_444_10 --- not supported --- HEVC_MAIN_444_12 --- not supported --- AV1_MAIN --- not supported --- AV1_HIGH --- not supported --- AV1_PROFESSIONAL --- not supported --- Output surface: name width height nat types ---------------------------------------------------- B8G8R8A8 16384 16384 y R8G8B8A8 16384 16384 y R10G10B10A2 16384 16384 y B10G10R10A2 16384 16384 y A8 16384 16384 y Bitmap surface: name width height ------------------------------ B8G8R8A8 16384 16384 R8G8B8A8 16384 16384 R10G10B10A2 16384 16384 B10G10R10A2 16384 16384 A8 16384 16384 Video mixer: feature name sup ------------------------------------ DEINTERLACE_TEMPORAL - DEINTERLACE_TEMPORAL_SPATIAL - INVERSE_TELECINE - NOISE_REDUCTION - SHARPNESS - LUMA_KEY - HIGH QUALITY SCALING - L1 - HIGH QUALITY SCALING - L2 - HIGH QUALITY SCALING - L3 - HIGH QUALITY SCALING - L4 - HIGH QUALITY SCALING - L5 - HIGH QUALITY SCALING - L6 - HIGH QUALITY SCALING - L7 - HIGH QUALITY SCALING - L8 - HIGH QUALITY SCALING - L9 - parameter name sup min max ----------------------------------------------------- VIDEO_SURFACE_WIDTH - VIDEO_SURFACE_HEIGHT - CHROMA_TYPE - LAYERS - attribute name sup min max ----------------------------------------------------- BACKGROUND_COLOR - CSC_MATRIX - NOISE_REDUCTION_LEVEL - SHARPNESS_LEVEL - LUMA_KEY_MIN_LUMA - LUMA_KEY_MAX_LUMA -
