feat: add hardware transcoding support to talk-recording container

Agent-Logs-Url: https://github.com/nextcloud/all-in-one/sessions/eaea217b-2995-4e47-a4ec-f7be19f98a18

Auto-detect /dev/dri in start.sh and export NEXTCLOUD_ENABLE_DRI_DEVICE automatically

Agent-Logs-Url: https://github.com/nextcloud/all-in-one/sessions/751d0b0c-e529-4ea6-a316-5a53169a9ab6

fix: address code review feedback (nvidia check, file_exists, group_add comment)

Agent-Logs-Url: https://github.com/nextcloud/all-in-one/sessions/eaea217b-2995-4e47-a4ec-f7be19f98a18

Use --device=/dev/dri instead of -v bind-mount in docs and compose

Agent-Logs-Url: https://github.com/nextcloud/all-in-one/sessions/4fa5e70a-b786-445e-946f-a0610751d855
Co-Authored-By: szaimen <42591237+szaimen@users.noreply.github.com>

Containers/mastercontainer/start.sh

@@ -312,6 +312,26 @@ if [ -n "$AIO_COMMUNITY_CONTAINERS" ]; then
     print_red "You've set AIO_COMMUNITY_CONTAINERS but the option was removed.
 The community containers get managed via the AIO interface now."
 fi
+if [ -n "$NEXTCLOUD_ENABLE_DRI_DEVICE" ]; then
+    print_red "The environmental variable NEXTCLOUD_ENABLE_DRI_DEVICE is deprecated. Please mount the /dev/dri device into the mastercontainer instead and remove NEXTCLOUD_ENABLE_DRI_DEVICE. It will then be set automatically."
+fi
+
+# Automatically enable the /dev/dri device if it is mounted into the mastercontainer
+if [ -d "/dev/dri" ]; then
+    export NEXTCLOUD_ENABLE_DRI_DEVICE="true"
+    if [ -e "/dev/dri/renderD128" ]; then
+        NEXTCLOUD_DRI_GID="$(stat -c '%g' /dev/dri/renderD128)"
+        export NEXTCLOUD_DRI_GID
+    else
+        export NEXTCLOUD_DRI_GID=""
+    fi
+else
+    if [ -z "$NEXTCLOUD_ENABLE_DRI_DEVICE" ]; then
+        # Force the unset of the env if it was not externally overwritten already
+        export NEXTCLOUD_ENABLE_DRI_DEVICE="false"
+    fi
+    export NEXTCLOUD_DRI_GID=""
+fi
 
 # Check if ghcr.io is reachable
 # Solves issues like https://github.com/nextcloud/all-in-one/discussions/5268

Containers/talk-recording/Dockerfile

@@ -19,6 +19,7 @@ RUN set -ex; \
         bash \
         xvfb \
         ffmpeg \
+        mesa-va-gallium \
         firefox \
         font-noto-all \
         font-noto-cjk \

Containers/talk-recording/start.sh

@@ -19,6 +19,33 @@ fi
 # Delete all contents on startup to start fresh
 rm -fr /tmp/{*,.*}
 
+# Detect available hardware for transcoding and build the [ffmpeg] config section accordingly
+FFMPEG_SECTION="[ffmpeg]
+# common = ffmpeg -loglevel level+warning -n
+# outputaudio = -c:a libopus
+# outputvideo = -c:v libvpx -deadline:v realtime -crf 10 -b:v 1M
+extensionaudio = .ogg
+extensionvideo = .webm"
+
+# Check for NVIDIA GPU hardware encoding (NVENC)
+if [ -e "/dev/nvidia0" ] && ffmpeg -hide_banner -encoders 2>/dev/null | grep -q "h264_nvenc"; then
+    echo "NVIDIA GPU detected, enabling h264_nvenc hardware transcoding"
+    FFMPEG_SECTION="[ffmpeg]
+outputvideo = -c:v h264_nvenc -preset p4
+outputaudio = -c:a aac
+extensionaudio = .m4a
+extensionvideo = .mp4"
+# Check for VA-API render node (Intel/AMD open source drivers)
+elif [ -r "/dev/dri/renderD128" ] && ffmpeg -hide_banner -encoders 2>/dev/null | grep -q "h264_vaapi"; then
+    echo "DRI device detected, enabling h264_vaapi hardware transcoding"
+    FFMPEG_SECTION="[ffmpeg]
+common = ffmpeg -loglevel level+warning -n -vaapi_device /dev/dri/renderD128
+outputvideo = -vf format=nv12,hwupload -c:v h264_vaapi
+outputaudio = -c:a aac
+extensionaudio = .m4a
+extensionvideo = .mp4"
+fi
+
 cat << RECORDING_CONF > "/conf/recording.conf"
 [logs]
 # 30 means Warning
@@ -50,12 +77,7 @@ signalings = signaling-1
 url = ${HPB_PROTOCOL}://${HPB_DOMAIN}${HPB_PATH}
 internalsecret = ${INTERNAL_SECRET}
 
-[ffmpeg]
-# common = ffmpeg -loglevel level+warning -n
-# outputaudio = -c:a libopus
-# outputvideo = -c:v libvpx -deadline:v realtime -crf 10 -b:v 1M
-extensionaudio = .ogg
-extensionvideo = .webm
+${FFMPEG_SECTION}
 
 [recording]
 browser = firefox