Why does it take so long to put movies onto discs?

takes me less than 10mins using all 4 cpu cores. but i tend to stick with 2 and it takes around 15mins.. this is burning to watch on a home dvd player.

what software are you using?

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Its a decent amount of data - 4.3 GB for a single layer DVD or 8.7 GB for a dual layer. The actually burning process should only be about 15 minutes or so from my experience, but if you are have to trans-code the video to the correct format that can take much longer. Such as if you have an .avi file or something like you are making a movie dvd out of it has to take the file apart and re-encode it into the seperate .VOB files that most DVD have to have to read the disc. Thats what really takes the time.