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NDI recorder Dockerfile

Record NDI streams within a Docker container. Currently supports 1 stream per container. Downloads SDK and recorder directly from ndi.tv. See an excerpt of the relevant documentation in SDK_DOCUMENTATION.md or online at https://docs.ndi.video/docs/sdk/16.-command-line-tools

Needs Linux host for mDNS sharing with avahi and dbus. Install avahi-daemon and avahi-utils on the host as well.

Run locally:

# Install host dependencies
apt install avahi-daemon avahi-utils

# Build container
docker build -t ndi-recorder .

# Create a volume (change IP, device, and name) if you want to record to NFS server
# or use a different mount when running instead, e.g. `--mount type=bind,source=~/,target=/H`
docker volume create --driver local \
--opt type=nfs \
--opt o=nfsvers=4,addr=192.168.216.58,nolock,soft,rw \
--opt device=:/mnt/HELYX/Storage \
hakclient1_storage

# Run the recorder container (use -dt instead of -it to run in background; view with `docker ps`)
# Output folder must exist!
docker run -it \
--mount type=bind,source=/var/run/dbus,target=/var/run/dbus \
--mount type=bind,source=/var/run/avahi-daemon/socket,target=/var/run/avahi-daemon/socket \
--mount source=hakclient1_storage,target=/H
-e STREAM_NAME="BIRDDOG-PTZ-01 (CAM)" \
-e OUTPUT_FOLDER="/H/your_output_folder" \
ndi-recorder

To do's

  • Easier changing of output folder
  • Timestamps & chopping:
    • needs wrapper program to send <record_chop filename="$OUTPUT_FOLDER/$STREAM_NAME-$TIMESTAMP.mov"/>)
    • might be possible using a cronjob?
    • doesn't seem like ndi-record responds to commands