Reducing the frame rate : the smooth video Issue This is my smooth video. 

Video details:

Frame rate=60 FPS
Video codec: h264
Not have any audio stream    

I want to convert it to a PAL video, But I can't get smooth video.

How to convert a high frame rate video to PAL format(or reducing the frame rate) Without impact on the smoothness of video?
In order of preference,


Generate animation at 25 FPS and capture it at 25 FPS.
Generate animation at 50 FPS and capture it at 50 FPS. Then, use FFmpeg to generate a 25 frames &amp; 50 fields per sec stream. Stream should be flagged as interlaced. x264 doesn't do interlaced well, so I suggest video codec ought to be MPEG-2 or DV.
Generate animation at 50 FPS and capture it at 25 FPS.