Eduard

What about error with usage of the libavformat9.6-2. First of all do check if `avcodec_open2` symbol exists in the `libavcodec.so` library which installed in the system by the next command...

Some time ago I had same problem (now fixed in the [last commit](https://github.com/lu-zero/bmdtools/commit/607f25f157271cd84a65a3de3e0c859f58c4fde2)). I was getting the next error $ make g++ -o bmdcapture bmdcapture.cpp ../../include/DeckLinkAPIDispatch.cpp `pkg-config --cflags libavformat libswscale`...

Speaking about [that](https://github.com/lu-zero/bmdtools/issues/17#issuecomment-20955480) problem I can propose the next solution. First of all build `libav` with some prefix and install it, on example `./configure --enable-nonfree --prefix=/home/user/bmdtools && make && make...

You're right, it's my mistake, because `make prefix=/home/user/bmdtools` should be used instead of `make --prefix=/home/user/bmdtools` for make `bmdtools`. Also in such way you can specify `bindir` and `libdir` in command...