ZGaetano
68c8f47c8f
The custom FFmpeg 7.1 in this image previously had NO nvenc — only prores_ks/dnxhd/libx264/libx265. The All-Intra HEVC ingest plan (docs/design/2026-05-29-all-intra-hevc-ingest.md §4.1) needs hevc_nvenc / h264_nvenc to offload the per-signal encode from CPU to the L4, so we rebuild ffmpeg's configure stage with: --enable-ffnvcodec --enable-nvenc --enable-cuvid nv-codec-headers (pinned n12.1.14.0) is cloned + installed before configure so ffmpeg picks up the ffnvcodec pkg-config. Full CUDA toolkit is omitted — only needed for GPU filters like yadif_cuda. Adds a sanity-check RUN that fails the build if hevc_nvenc/h264_nvenc don't appear in 'ffmpeg -encoders' so a broken NVENC build can't silently ship. Creates /live and /growing as empty dirs since the node-agent binds them at sidecar start.
98 lines
4 KiB
Docker
98 lines
4 KiB
Docker
# ── Stage 1: Build FFmpeg with DeckLink + NVENC (HEVC/H264) support ─────────
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# All-Intra HEVC NVENC is the master codec for growing-file ingest (see
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# docs/design/2026-05-29-all-intra-hevc-ingest.md). This stage gets the
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# nv-codec-headers (header-only, no driver / no full CUDA toolkit needed)
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# so ffmpeg's configure can light up hevc_nvenc / h264_nvenc / cuvid.
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# At runtime, /dev/nvidia* + the host driver libs (via the NVIDIA Container
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# Toolkit) supply the actual encoder.
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FROM debian:bookworm AS ffmpeg-builder
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RUN apt-get update && apt-get install -y --no-install-recommends \
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build-essential nasm yasm pkg-config git ca-certificates python3 \
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libssl-dev libx264-dev libx265-dev libvpx-dev libopus-dev \
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libmp3lame-dev libsrt-openssl-dev \
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libzmq3-dev zlib1g-dev libstdc++-12-dev \
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&& rm -rf /var/lib/apt/lists/*
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# Copy in BMD DeckLink SDK headers and patch script
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COPY sdk/ /decklink-sdk/
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COPY patch_decklink.py /patch_decklink.py
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COPY decklink-sdk16.patch /decklink-sdk16.patch
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# nv-codec-headers — just the ffnvcodec public headers + a pkg-config file.
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# Pin to a tag known to work with FFmpeg 7.1 (n12.x series).
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RUN git clone --depth=1 --branch n12.1.14.0 https://github.com/FFmpeg/nv-codec-headers.git /nv-codec-headers \
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&& make -C /nv-codec-headers PREFIX=/usr/local install
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# Pull FFmpeg 7.1 source
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RUN git clone --depth=1 --branch release/7.1 https://git.ffmpeg.org/ffmpeg.git /ffmpeg
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# Patch FFmpeg DeckLink code for SDK 16.x API changes
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RUN python3 /patch_decklink.py
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WORKDIR /ffmpeg
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# NVENC adds: --enable-nvenc (encoder), --enable-cuvid (decoder), --enable-ffnvcodec.
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# We deliberately do NOT enable --enable-cuda-nvcc / --enable-libnpp here — those
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# require the full ~3GB CUDA toolkit and are only needed for GPU filters like
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# yadif_cuda / scale_cuda. If §5's GPU deinterlace stretch goal goes ahead,
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# rebuild this image off nvidia/cuda:12.x-devel and flip those flags on.
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RUN ./configure \
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--prefix=/usr/local \
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--pkg-config-flags="--static" \
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--extra-cflags="-I/decklink-sdk -I/usr/local/include" \
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--extra-ldflags="-L/usr/local/lib" \
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--enable-gpl \
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--enable-nonfree \
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--enable-libx264 \
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--enable-libx265 \
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--enable-libvpx \
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--enable-libopus \
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--enable-libmp3lame \
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--enable-libsrt \
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--enable-libzmq \
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--enable-decklink \
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--enable-ffnvcodec \
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--enable-nvenc \
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--enable-cuvid \
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--disable-doc \
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--disable-debug \
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--disable-ffplay \
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&& make -j$(nproc) \
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&& make install
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# Sanity-check: hevc_nvenc and h264_nvenc must be present in the encoder list,
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# otherwise the resulting image is useless for the All-Intra HEVC pipeline.
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RUN /usr/local/bin/ffmpeg -hide_banner -encoders 2>&1 | grep -E 'nvenc' \
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|| (echo 'FATAL: nvenc encoders missing from ffmpeg build' && exit 1)
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# ── Stage 2: Runtime image ───────────────────────────────────────────────────
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FROM node:20-bookworm
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# Runtime deps for compiled ffmpeg libs
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libx264-164 libx265-199 libvpx7 libopus0 libmp3lame0 \
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libsrt1.5-openssl libzmq5 libstdc++6 libc++1 libc++abi1 \
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&& rm -rf /var/lib/apt/lists/*
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# Copy compiled ffmpeg/ffprobe
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COPY --from=ffmpeg-builder /usr/local/bin/ffmpeg /usr/local/bin/ffmpeg
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COPY --from=ffmpeg-builder /usr/local/bin/ffprobe /usr/local/bin/ffprobe
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COPY --from=ffmpeg-builder /usr/local/lib/ /usr/local/lib/
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# DeckLink runtime .so
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COPY lib/libDeckLinkAPI.so /usr/lib/libDeckLinkAPI.so
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COPY lib/libDeckLinkPreviewAPI.so /usr/lib/libDeckLinkPreviewAPI.so
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RUN ldconfig
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# Mount points the recorder lifecycle expects to exist.
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# /live — HLS preview output (bound from host LIVE_DIR by node-agent)
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# /growing — growing-file master output (bound from host /mnt/NVME/MAM/growing)
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RUN mkdir -p /live /growing
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WORKDIR /app
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COPY package*.json ./
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RUN npm install --omit=dev
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COPY . .
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EXPOSE 3001
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CMD ["node", "src/index.js"]
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