iClone uses an internal frame rate of 60 frames per second (fps). 3000 frames equals 50 seconds of video.
If you render a 50 sec. video at 30 fps NTSC standard then you end up with 1500 frames. A PAL render of 25 fps gives you 1250 frames, and a film standard render of 24 fps gives you 1200 frames.
No matter which way you look at it you still end up with 50 seconds of video.
System: Win 10 Pro (1803), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver 417.35), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.