centmult/bmdtools

Basic capture and play programs for Blackmagic Design Decklink

BlackMagic devices tools

Initially developed as an example integration between libavformat and the bmd sdk, it ended up being a set of useful tools to use the BlackMagic Devices decklink cards on Linux and OSX.

Thanks to TodoStreaming sponsoring its early development.

Build instructions

In order to build it just clone/unpack this on your Sample directory from the DeckLink SDK and then issue "make". If you have Libav and pkg-config installed it will build fine. Make sure you are using a quite recent Libav otherwise it will not build.

You can build it out of the Sample tree by issuing

make SDK_PATH=/path/to/the/bmd/include

OSX Support

Should work out of box.

Windows Support

The tools do not build on Windows currently, supporting it would either require a working widl support in mingw64 or access to the native tools.

Patch and/or sponsorship welcome.

Usage

./bmdcapture -C 1 -m 2 -I 1 -F nut -f pipe:1 | avconv -y -i - <your options here>

-I switch from the default (HDMI) source to Analog (both audio and video)

-C select the capture device if more than one is present.

-F define the container format, I suggest using nut.

-f output file name, any libavformat compatible url is supported.

-m specific modeline, resolution+framerate

-o pass AVFormat AVOptions (expert)

NOTE: make sure you are processing frames capture in real time or be prepared to end up using all your memory quite quickly, HD raw data fills up memory quickly.

avconv -vsync 1 -i <source> -c:v rawvideo -pix_fmt uyvy422 -c:a pcm_s16le -ar 48000 -f nut - | ./bmdplay -f pipe:0

Support

The github issue tracker can be used to track bugs and feature requests.

Contact

You can directly contact me either at

[email protected] or [email protected]

Paid Support

Paid support is offered, contact [email protected] for details.