Zac Gaetano
27a868aa5c
CasparCG's bundled FFMPEG/HLS consumer muxes a broken audio track (aac sample_rate=0, time_base 1/0) into the preview, and silently drops every arg that would remove it (-an, -codec:a, -g, -r all "Unused option"). That corrupt audio black-screens the browser preview because neither ffmpeg nor hls.js can decode the playlist. Re-architect the preview path: CasparCG now STREAMs plain mpegts to a UDP loopback port, and a Node-spawned STANDALONE ffmpeg (where -an actually works) re-muxes it to clean, video-only HLS with -c:v copy. The child process is tracked, auto-respawned while running, and killed in stopChannel(). The PRIMARY SRT/RTMP/SDI/NDI output (with program audio) is untouched. Also fix the Dockerfile to match the working image: ubuntu:22.04 base + CasparCG 2.4.0 ubuntu22 zip + NodeSource Node 20, and add a standalone ffmpeg CLI. The old 2.3.3 tarball URL 404s. entrypoint.sh updated for the 2.4.x bin/casparcg layout + bundled lib/ LD_LIBRARY_PATH. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
90 lines
4.6 KiB
Docker
90 lines
4.6 KiB
Docker
# Wild Dragon Playout sidecar — CasparCG Server + Node AMCP control shim.
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#
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# CasparCG's mixer needs an OpenGL context. On a node with a real GPU we'd pass
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# the device + driver through; for the headless / no-GPU case we run a virtual
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# framebuffer (Xvfb) so the GL context initialises. The container is launched
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# --privileged by mam-api (same as capture) so DeckLink / NDI hardware is
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# reachable when present.
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#
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# CasparCG 2.4.x no longer ships a self-contained Linux tarball — the GitHub
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# release provides either Ubuntu .deb packages or an "ubuntu22" zip that bundles
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# the binary + its .so files under bin/ and lib/. We use the zip on an
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# ubuntu:22.04 base so the bundled libs match the host glibc/abi, then install
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# Node 20 from NodeSource on top.
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#
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# NDI + DeckLink SDKs are NOT redistributable. They are fetched at build time
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# from a URL supplied as a build arg (mirror it into your own artifact store);
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# the build still succeeds without it (NDI/DeckLink consumers simply won't be
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# available — SRT/RTMP/test output still work).
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FROM ubuntu:22.04
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ARG CASPAR_VERSION=2.4.0-stable
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ARG CASPAR_URL=https://github.com/CasparCG/server/releases/download/v2.4.0-stable/casparcg-server-v2.4.0-stable-ubuntu22.zip
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ARG NDI_SDK_URL=
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ENV DEBIAN_FRONTEND=noninteractive
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# CasparCG 2.4 runtime deps + Xvfb for headless GL + CEF (HTML producer) deps +
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# Node 20 (NodeSource) + a STANDALONE ffmpeg CLI. The standalone ffmpeg is what
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# the Node shim spawns to re-mux the CasparCG mpegts preview stream into clean,
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# video-only HLS (CasparCG's own FFMPEG consumer silently drops -an and muxes a
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# broken audio track, which black-screens the browser preview).
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RUN apt-get update && apt-get install -y --no-install-recommends \
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ca-certificates curl unzip tar xz-utils gnupg ffmpeg \
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xvfb libgl1-mesa-dri libglu1-mesa fonts-dejavu-core \
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libnss3 libnspr4 libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2 \
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libxkbcommon0 libxcomposite1 libxdamage1 libxfixes3 libxrandr2 \
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libgbm1 libpango-1.0-0 libcairo2 libasound2 libatspi2.0-0 \
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&& mkdir -p /etc/apt/keyrings \
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&& curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
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| gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
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&& echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x nodistro main" \
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> /etc/apt/sources.list.d/nodesource.list \
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&& apt-get update && apt-get install -y --no-install-recommends nodejs \
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&& rm -rf /var/lib/apt/lists/*
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# ── CasparCG Server (ubuntu22 zip bundle) ────────────────────────────────────
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# The zip extracts to /opt/casparcg_server with the binary at bin/casparcg and
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# its bundled .so files under lib/ (added to LD_LIBRARY_PATH by entrypoint.sh).
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# Symlink to /opt/casparcg so the config/entrypoint paths stay stable.
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WORKDIR /tmp/caspar
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RUN set -eux; \
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curl -fsSL "$CASPAR_URL" -o caspar.zip; \
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unzip -q caspar.zip -d /opt; \
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chmod +x /opt/casparcg_server/bin/casparcg /opt/casparcg_server/scanner 2>/dev/null || true; \
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ls /opt/casparcg_server/; \
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test -x /opt/casparcg_server/bin/casparcg; \
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ln -sfn /opt/casparcg_server /opt/casparcg; \
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echo "caspar binary: /opt/casparcg_server/bin/casparcg"; \
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cd /; rm -rf /tmp/caspar
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# ── NDI runtime (optional) ───────────────────────────────────────────────────
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# If an NDI SDK tarball URL is provided, extract its libs to /opt/ndi-lib and
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# point CasparCG at them via NDI_RUNTIME_DIR_V6. Pin the SDK version to what the
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# server expects (the common docker failure is a libndi .so version mismatch).
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RUN if [ -n "$NDI_SDK_URL" ]; then \
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mkdir -p /opt/ndi-lib && \
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curl -fsSL "$NDI_SDK_URL" -o /tmp/ndi.tar.gz && \
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tar xzf /tmp/ndi.tar.gz -C /tmp && \
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find /tmp -name 'libndi*.so*' -exec cp -a {} /opt/ndi-lib/ \; && \
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rm -f /tmp/ndi.tar.gz && ldconfig /opt/ndi-lib || true; \
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fi
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ENV NDI_RUNTIME_DIR_V6=/opt/ndi-lib
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# CasparCG media folder — mam-api stages assets from S3 into this volume.
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RUN mkdir -p /media
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# ── Node control shim ────────────────────────────────────────────────────────
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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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# CasparCG config + entrypoint
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COPY casparcg.config /opt/casparcg/casparcg.config
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COPY entrypoint.sh /entrypoint.sh
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RUN chmod +x /entrypoint.sh
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EXPOSE 3002 5250
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ENTRYPOINT ["/entrypoint.sh"]
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