Things you'll need to go from Generation 3 --> 6 (aside from games)

• Nintendo DS, or Nintendo DS Lite (contains both a GameBoy Advance game pak slot, and a Nintendo DS game card slot)
• A Second Nintendo DS to transfer Pokemon from generation 4 --> 5
• A Nintendo 3DS to transfer Pokemon from generation 5 --> 6. If you have a 3DS, you don't need the DS from the last step.

Generation 3 --> 4

Transfer up Pokemon using PalPark from Ruby, Sapphire, FireRed, LeafGreen, and/or Emerald to Diamond, Pearl, and/or Platinum. For this you need an original Nintendo DS or a Nintendo DS Lite as you need access to a Nintendo DS game card slot, and a GameBoy Advance game pak slot. Additionally, you can not transfer up eggs.

Gamecube Games --> Gen 3

You can also transfer up Pokemon from Pokemon Colosseum or Pokemon XD: Gale of Darkness to a modern Pokemon game, you just need to transfer them via trade to a generation 3 game, and then transfer them up like normal Pokemon.

Generation 4 --> 5

At Route 15 in Black or White you'll have to transfer everything up from your generation 4 games. For this, you'll need 2 Nintendo DS systems, one following the instructions in Pokemon Black, White, Black 2, and White 2, and another with the generation 4 game inserted running DS Download Play. You can transfer up Pokemon in this fashion, however there are a few stipulations:

• Held items will not be transferred up to generation 5 (they'll automatically be returned to the player's bag)
• The Pokemon being transferred can not know any HM moves.
• You can not transfer eggs.
• The Spikey-eared Pichu (a promotional exclusive) can not be transferred up.

Generation 5 --> 6

Starting December 27th 2013, download the 3DS application titled Pokemon Bank from the Nintendo eShop. This application can take Pokemon from a Generation 5 or 6 Game, and store them inside of the app. After this process is done, withdraw the Pokemon from Pokemon Bank in your generation 6 game.

Things to note when transferring Pokemon

• All Pokemon are forever lost from their past generation game - there is no way to transfer a Pokemon back to its previous generation.
• Game mechanics change between generations. While a team might be effective in one game, it might not prove to be useful in another. Notably moves are assigned physical or special in generation 4 onwards; and generation 6 introduces new mechanics such as the fairy type, base stat changes, and move changes.

The problem with these files is that they won't save it as a video but as a set of commands (Pokemon A attacks Pokemon B etc.) so you can't play these files on your computer except there would be a PC software that understands these commands and renders them. You could use an DS emulator and copy your save from your SD card to the virtual SD card of the emulator, then record the output with a screen capture software and send these videos to your friends.