Is not that easy ๐
There is a site called Remote Central where you can find lots of ccf files with codes of devices. What brand and model is your DVD?
Once you have the ccf file, you have to take the HEX codes, convert them with the software of Lintronic and create one txt file for every command. When you have all commands created, you can make an xml file with a software created by Weebyx and Keith Sanuders, from the forum. This xml file is what you need to control your device with the Beo5.