[MEncoder-users] compression: 1080i versus 720p

[Andrew Berg]

On 12/20/2009 1:51 AM, RC wrote:
> When you deinterlace the 1080i video, you're reducing it to 30fps.  720p
> is typically 60fps, which has more similarity to interlaced video.
>
> So, if you don't deinterlace the 1080i video, you'll probably see them
> using a higher bitrate.
What does deinterlacing have to do with framerate? It's true that (when
it comes to TV broadcasts in the US) 720p is typically 60fps but 1080i
feeds are 30fps whether they've been deinterlaced or not.