i think Hulu speeds up parts of Futurama episodes.
watching Wild Green Yonder with a friend, me watching the movie on my Plex, them watching the version broken into episodes on Hulu.
i pulled Hulu up to make sure i stayed synced, and the Hulu version quickly pulled ahead of mine. i didn't notice a missing scene but i wasn't paying close attention to the Hulu version.
when Hulu auto-cycled to the next episode, even with outro and intro credits, it brought it back to sync with my version. we're ⅓ through episode two, and Hulu is currently 14 seconds ahead, although we started this episode synced.
My math is rusty, but this sounds like their original source files were at a different framerate than whatever their streaming standard framerate is. E.g., a 25 fps PAL source, playing at a 30 (or 29.976) NTSC rate.
It could be 24fps video sped up to 25fps for PAL. If it was 25fps sped up to 30fps, it would be very noticeable and the episodes would be about 3 minutes shorter.
That shouldn't change the time of the movie. FPS = frames per second. The second part is still one second. It's the number of frames you see in that one second that is different.
That's assuming that they didn't just keep the same number of frames, but something made it run at the full 30.0 FPS to get that speed. I've absolutely had software that fucked that up in the past.