Does converting interlaced video to 50fps give a smoother framerate?

[MrBiggles]

This may seem like a stupid question but does converting an interlaced video to 50fps give a smoother framerate? An interlaced video has 25 frames per second. I convert it to 50fps. I can see in a video editor that is has 50 unique frames (no duplicated frames). So does this mean the video will have a smoother framerate than the 25fps original or will it just look as smooth as the original did?

[jagabo]

Each frame of the 25 fps interlaced source contains two half pictures (fields). When properly displayed you see those two half picture separately and sequentially at 50 fields per second -- essentially a real time bob deinterlace. So no, deinterlacing yourself to 50 fps does not make the video smoother. If your player doesn't bob then doing so yourself will give smoother playback.