Checked into GIT the filedv.h patch along with the filedv.C patch (DV fix to handle 16x9 to avoid floating point rounding errors.  DV improvement to add date and  timecode when encode rawdv).

On Tue, Jan 16, 2024 at 3:52 PM Andrew Randrianasulu <randrianasulu@gmail.com> wrote:
according to my grep-fu this define not used anywhere, probably
remnant from some cinelerra-cv era experiments in using ffmpeg for dv
(today we can do the same directly)

grep DV_USE_FFMPEG cinelerra/*
grep: cinelerra/data: Это каталог
cinelerra/filedv.h:#ifdef DV_USE_FFMPEG
grep: cinelerra/i686: Это каталог
grep: cinelerra/tests: Это каталог