IMF Frameserver - (CPL decoder)

Goal

Open Source Program to decode Interoperable Master Format (IMF) CPL & OPL into raw audio and video so that we can pipe it into ffmpeg or other processors

This is a WIP! Contains quite some shortcuts and unsecure code (e.g. strcpy). Please use with caution :-)

Features so far

take CPL & ASSETMAP as input and output .nut file with r210 10-bit RGB444 and pcms24le
supports multiple segments with start points and repeat counts
output can be piped into ffmpeg to produce whatever you want

Drawbacks

only CDCI(YUV422) yet, RGBA coming soon, color problems with YUV444
audio only wav s24le
only .nut pipe output
Not tested yet on content with broadcast framerates such as 23.97
running it still a bit clumsy (see test.sh)
might only compile under Ubuntu (nothing else tested)

Install

Ubuntu (WSL)

apt install libtool, automake, autoconf, cmake
run sh install-deps.sh
run make

Run it

(see test.sh)

CUR_PATH=$(pwd)
IMF_ENC=${CUR_PATH}/imf_fs

# we need to be in IMF directory for relative path resolve to work (to be fixed)
cd ~/bs500a-dalet-a-ov

CPL=CPL_52a5343e-1184-44b4-86e3-43477636ae69.xml
ASSETMAP=ASSETMAP.xml

# hack
export LD_LIBRARY_PATH=${CUR_PATH}/third_party/openssl/lib

#direct piping
${IMF_ENC} ${CPL} ${ASSETMAP} | ffmpeg -i - -f mp4 -y ~/xpipe.mp4

License

LGPL