How to add a millisecond timestamp to the text overlay?
Posted: 24 Jun 2009 01:40
Hello everyone,
We are using a webcam on a telescope to get the timing of some astronomical phenomena.
I've seen that I can use something like:
to add an overlay to each frame with the current date and time.
For our measurements, we need that the time is recorded on each frame, and we need a timestamp more precise than one second. We need tenths of seconds.
I've seen that this thing is possible in Linux with the date command (using the %N specifier I can get nanoseconds), but not with the stfrtime function.
Does anybody know how could we add a sub-second precision timestamp to our movies?
thanks in advance
gerlos
We are using a webcam on a telescope to get the timing of some astronomical phenomena.
I've seen that I can use something like:
Code: Select all
vlc v4l2:///dev/video0:width=640:height=480:fps=5 --sub-filter 'marq{marquee="%F %T",position=8}'For our measurements, we need that the time is recorded on each frame, and we need a timestamp more precise than one second. We need tenths of seconds.
I've seen that this thing is possible in Linux with the date command (using the %N specifier I can get nanoseconds), but not with the stfrtime function.
Does anybody know how could we add a sub-second precision timestamp to our movies?
thanks in advance
gerlos