Anyway, regarding the actual encoding, everything seems fine with the 18-second test clip I tried. However, I couldn't help but notice that the bitrate even at the higher encoding setting is a bit low... the source was 3.5Mbps @ 720p25 while the final encoding was 5Mbps @ 720p60 - unless the program calculates the increase in bitrate based on what the source bitrate is combined with the resulting resolution and framerate? Then in that case it'd likely be fine since my main worry was for things of a higher bitrate.
Secondly, I also noticed that the resulting video is 59.97fps rather than a flat 60fps. Considering that I'm encoding from a flat 25fps and SVP has the 2.4x option for 25--to->60 which would also result in a flat 60, I'm wondering if the final encoding will actually have the video be a teeny bit slower than it should be...
Thirdly, with a long video (read: 1+ hour), you need quite a lot of disk space... I did not realize this as I was using an 8GB ramdisk for the program's temp folder.
Lastly, the interpolated framerate choices are quite limited - there's minimal choices for 24fps and especially 25fps content if you want to do an exact multiple of the source framerate that is greater than 2x. Yes you could use 120fps for 24fps, but there really should be some thing(s) in the middle like 72fps and 96fps, not to mention 75fps and 100fps for 25fps content.
EDIT:, and the big one - the encoder can't browse your hard drive for videos! It insists on only looking in the specified NGP folder, so I'm cheating by using symbolic links.
EDIT 2: Oh. my. bloody. nora. 8GB of TEMP data only encoded a whopping 1 and a half minutes? The whole video is over an hour! I don't even have a single hard drive that's 500GB except for a single USB 2.0 external drive, but that would take forever!
EDIT 3: I just realized that the preview.avi isn't even interpolated...so why does NGP even need decode the source video into a lossless format then? Can't it just decode directly from the source video file?
EDIT 4: Whelp, I know why I can't decode directly from the source file now. Simply put, it doesn't work - it just gives me a video with a black screen. What I tried to do was select my video, then delete the preview.avi file (which normally it doesn't let me do, but for some reason it let me do it one time), and then copy my own AVI file and rename it preview.avi and put in into the according Temp folder.