Thanks Borgus1 - I sort of get it but I'm still a bit confused sorry!
So my iPhone 5s takes MP4 video in 30 fps, which sounds like its using NSTC, so its logical that when I use PD11 with a setting of UK (PAL) it will object saying it wants 25 fps.
If I then play the generated PAL output through my Apple TV 3 it works but also, if I play the original video directly through the ATV3 from the iPhone using Airplay, that also works.
There doesn't appear to be a setting on the ATV3 for PAL or NSTC, I assume its just a sending device which "moves" the video from the source device (iPhone or PC) onto the TV ?
So it appears that it works with either 25fps or 30fps so I'm confused.
Also I checked the settings on Vuze, which I use to convert videos from other formats such as AVI or MPEG2 into MP4, and it converts to 30fps....and also Handbrake which is used for DVD ripping, for which the ATV3 pre set also generates 30fps.
So basically I'm confused and just wanting to know what will be the best format to produce for all my home video, some of which was taken on a Sony digital camcorder (MPF format) and now on the iPhone 5s - so I can display it via ATV3 on a Pany TX-P50ST50B.
PowerDirector 12 Build 2420
Windows 7 Home Premium SP1 64 bit
Dell Studio XPS 7100 AMD Phenom II x6 1035T 2.6Ghz with 8 Gb RAM
ATI Radeon HD 5770 video card graphics card
Hauppauge Colossus capture card and "Capture" software