Useful for dealing with constant frame-rate video.
(cherry picked from ffmpeg commit 722762f7e1212b4d02142778fabfdd73375722e0)
018bdae setpts: add FRAME_RATE constant
doc/filters.texi | 3 +++
libavfilter/setpts.c | 9 +++++++++
2 files changed, 12 insertions(+)
Upstream: git.libav.org