have loaded my videos on to my computer but when i load to dvd programme they are upside down

I have no experience on Blu ray files and disk yet. I haven't bought a single movie in blu ray.
So I would like to ask, do I need a special media player to play blu ray movies downloaded from the internet? How about from a blu ray disk inserted into the disk drive?

I have a recorded video that the audio is out of sinc, and I would like to extract the audio then put it back on the video with the correct timing. (I know I'm not using technical terms, I know how to put the audio back on, I just need help extracting it.)

I know youtube converts your uploaded video after it's uploaded.
I'm trying to copy the same quality a video has on a computer onto the uploaded version; hopefully you can follow what I'm tryin' to say.

The share option only allows me to upload to sites like youtube, and the email attachment restricts the size. I connected my iphone5s to my computer, but all that shows up is pics. When I used my iPhone 3, everything (pics, music, videos) was transferred well.

i am cannot decide between 720 and 1080. i sit at a desk watching my movies on the pc and my screen is on another desk directly in front of me connected to 5.1 surround speakers. It's a 24" screen.
With the 720 and 1080 p video make any difference on my display?

how to download avideo?

My video picture and audio are not synchronous. What is the problem and how to fix it?

I want a converter program to convert video to gif easily. Windows movie maker helps me get video clips, but I need a good gif converter without watermark inserted. Help? I have tried a lot, either give low quality or come with watermarks.

I play multiple instruments and i would like to make a cover video of me playing all of the instruments, in one video. I've seen a lot of other videos where its done,but i'm not sure how to do it in windows live movie maker or if it is even possible in windows live movie maker. I think it can be done but I just have no idea how. Please give specific instructions on how or a different program where i can do that.