It may work or break it completely ...
apply by normal patch command from inside
thirdparty/ffmpeg (may be "cat pathname | patch -p1", may be
"cat patchname | patch -p0") or edit libavcodec/qsvenc.c by
hand.
rebuild ffmpeg, do not do make clean,
cd ../../
so you again in main directory with ./autogen.sh and bin
directory with cinelerra.
touch cinelerra/ffmpeg.C
make
Hopefully this rebuild cin so on next start from bin/cin
you will have something to test with tff sources.
Unfortunately, netBSD does not support hardware
virtualization on AMD cpus, so for now I do not have my
virtual machines. I also forgot type of cable from PSU to
disks, so now I can only power up one of two sata drives.
It will be fixed eventually, but for now I hope to live up
this netBSD install a bit ...