video quality

Hey guys, I have a question. Why is my Youtube video I uploaded seems more blurry than others' when played in the same 480p quality? Here's my video link : First Link : Shot with Iphone 7 (my main gear). I got the image like this Second link: Shot with my friend's mirrorless And here are...

Hello fellow Tommies! So I made a video called R9 280 + i5-4690K Benchmark (http://). The problem is the quality on the upload sucks for some reason.. The original file is great but the upload just won't work well. I was thus wondering what the problem is, if I've screwed something up over...