Complex sentence: This "480p" appears to be a general term for 16:9 aspect ratio, 848 × 480 pixels files encoded in AVC/H.264, although 848 is not a multiple of 16 and neither is 480 a multiple of 9.
Split into simpler sentences: This "480p" appears to be a general term for 16:9 aspect ratio, 848 × 480 pixels files encoded in AVC/H.264. Interestingly, 848 is not a multiple of 16 and neither is 480 a multiple of 9.