Do video cards, processing speeds, or RAM effect the quality of a video?

I am getting into film. Now does the processer, RAM, and video card effect the quality of the video I output, or only the quality on my computer? For instance, Me and John both upload a video to youtube. Me and John both have the same video cameras, but John has a better video card, RAM, and processing speed. Will his video on youtube be better or the same quality as mine (if someone else was watching them)?|||Nope. If you use the same software to convert before you upload, it will look exactly the same, except his will just finish converting before yours since his computer is faster. All a video card does with video is offload the work from the processor but only while you're watching it, not converting it. But this applies more to higher def video. For example, a big high def video file might be choppy on your computer, but will play smoothly on his. Even so, converting the same video with the same program will give you the same results. There are some programs that take advantage of video cards while converting, but only to speed up the process, not make it look better.|||No, it just means that John's computer will handle the video files more efficiently (i.e. faster and more smoothly). The video output from both computers should be exactly the same.|||no they will look the same. the only thing it (better cpu etc) will do better is compress and change video faster.