you can’t decide what to do until you decide how you want it to look. there are many ways to handle interlaced.
1. leave interlaced and supported playback interlaced systems. you won’t see lines. motion will stay fluid
2. deinterlace will also slow temporally the information(ex. 29i to 29p) via discard, blend, interpolate(motion compensation)
3. double frame to fields bob, progressive scan etc.