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 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?

I want to transfer my songs, movies etc. from itunes on my computer to my samsung galaxy. Is that possible?

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?

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

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?

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