>>81344544There's basically two ways: Fast and slow. Fast means that you simply make sure any scrolling text sequences get decimated right - this can be done with a simple override file that sets the decimation pattern for the scrolling text parts, for example. However, this way makes the text slightly jumpy, since it's essentially missing one frame of its original animation (since it was 30fps, while the actual underlying content is 24fps).
The slow way is to do motion interpolation so that the scrolling text appears to move smoothly at 24fps. It's pretty trivial Avisynth-wise (there's a plugin called ivtc_txt60mc that exists just for this purpose), but compared to regular IVTC, it's slooooow. I manage to do it pretty fast by encoding a lossless IVTC pass for the video, where only the scrolling text parts get the slow treatment, but encoding multiple lossless 1440x1080 streams at the same time requires a fuckload of RAM. Picture related.