[FFmpeg-user] is there any filter that can change frame rate but not duplicate same frame

[qw]

Hi,


I found two filters in ffmpeg, i.e. fps and framerate, which can change frame rate of incomming video. If original frame rate is less than target frame rate, what I want is use original frame rate instead of target one in this case. Does fps or framerate filter have the function? or is there any other filter that keeps original framerate and doesn't duplicate same frame, when target frame rate is larger than original one?


Thanks


Regards


Andrew