Brings the node-local NVENC ffmpeg build into the branch and fixes it:
- multi-stage build with nv-codec-headers + --enable-nvenc/--enable-cuvid
- removes --pkg-config-flags="--static", which broke x265 detection
("ERROR: x265 not found using pkg-config") and prevented the image from
ever building. Shared linking is used; runtime stage already apt-installs
the shared codec libs (libx265-199 etc).
- self-validating: build fails if nvenc encoders are absent.
Rebuilt image confirmed to expose hevc_nvenc/h264_nvenc/av1_nvenc on the L4.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The previous patch_decklink.py mixed v14_2_1 versioned types (Fix 1 renamed the allocator class) with no-ops for SetVideoInputFrameMemoryAllocator + QueryInterface-around-GetBytes (Fixes 2 & 3). That inconsistency compiled but silently dropped every video frame: VideoInputFrameArrived saw _v14_2_1 allocator output but tried to read it via the SDK 16 unversioned IDeckLinkVideoBuffer path, and the SDK released the buffer before FFmpeg could consume it.
Bisected with the BMD-provided Capture sample at SDK 16 mode 5 (Hp29) which got frames cleanly, confirming the signal was fine and the bug was in FFmpegs decklink demuxer.
Fix: pull libavdevice/decklink_{enc,dec,common}{.cpp,.h} from upstream FFmpeg master (commits past 7.1 that fully rename every decklink interface to its _v14_2_1 versioned form) and apply that diff in reverse during build. Now build is internally consistent and frames flow.
Verified: SDI1 recorder on zampp2 hits 423 frames in 14s @ 29 fps, ProRes HQ at 91 Mbps.
Dockerfile is now a two-stage build that compiles FFmpeg from source with --enable-decklink against the Blackmagic SDK 16.x headers in services/capture/sdk/ (operator-supplied, gitignored). build-with-decklink.sh + patch_decklink.py drive the build.
docker-compose.yml mounts /dev/shm, /run/dbus, /run/systemd into mam-api, capture, web-ui so the BMD runtime can talk to the host.
capture-manager.js wraps SDI sources with -vf yadif=mode=1 (deinterlace).
recorders.html defaults to SDI source type now that we have a working DeckLink path.
