I have a "sky" object onto which I am trying to put an animated texture. I've successfully done this before using stock footage straight off my camera (720 x 480 SD), and if I put this same piece as the texture, it works.
This time, though, I'm manufacturing the animation out of After Effects. I've tried many different output formats (MPG, AVI, MOV) and resolutions (HD, SD, etc), all with no success. Either nothing renders or 4D reports a texture error.
Thinking it might be something about how After Effects renders, I have tried using Premiere to re-render the footage, again, in many formats. All those rendered from Premiere get a texture error from 4D.
I'm not a C4D expert but have you tried unsqueezing 1440 x 1080 to a full 1920 x 1080? Maybe C4D just doesn't play well when the pixel aspect ratio isn't square (1440 x 1080 straight from camera usually sets a 1.333 pixel aspect ratio; rectangular pixels basically).