I have DIYed a home gallery slides but it won't upload to YouTube? What should I do?

It's said dslr camra video is too large although it is not taken in 480p.
I recorded a 2-minute video clip, the size was about 100 mb. why?

Seems HD DVD ssigned a deal with Paramount. Then should I get a ps3 supporting blu-ray or a HD DVD player?

I downloaded some video files with AVI format. but it is not compatible with iPad 4 ,so how can i convert the AVI form to MP4 ?

I usually use iDVD to burn dvd format pictures, movies, and data, but in my new Mac computer there is no iDVD, where can I get that (useful for me) program?

I need to buy a HDMI to Audio Video converter to enable connection between my laptop and old generation analogue TV. Where can I buy this converter in New Delhi or NCR?

Which do you think is better: WMP 11 or iTunes?

I have Mac OS-X 10.11 (El Kapitan) Will creator work for me?

I bought lots of DVDs there years, and some of them are already wear out. So I think I'd better copy and save them to my computer? How can I do this?