Creating subtitle files
I'm working on subbing an MP4 (H.264) video files. How can I get setup creating subtitle files for them? The main OS for this would be Windows XP 64-bit. But I also have Mac OS X and Fedora if there are other tools for those OS's that I can use.
PC: AMD Phenom 9950 2.6ghz Quad Core, ATI Radeon HD 5770, 8gb DDR2 RAM
Phone: Apple iPhone 5s 64gb (jailbroken)
Handheld Games: Nintendo 3DS XL, Tapwave Zodiac 2, GamePark Holdings GP2X F100