I would like to create an animated video that features a 2d character who speaks. I have been searching all over for a website that sells 2d characters that include the mouth shapes needed to represent the various phonemes, but I can't find any.
Does anyone know of any websites that might sell 2d characters that I can import into AE without creating any of the graphics myself?
If you google (under images) for "Phonemes" you will get hundreds of tables, filled with different expression and standard mouth shapes. You can then either use these to create your own versions (there will be several ways to do this), or, since you are willing to spend some money to buy the characters, why not check out http://aescripts.com/auto-lip-sync/
We use this tool extensively for our project, and it is very user-friendly. The mouths will look a lot better with this, them standard phoneme mouth shapes.
If you want to go the phoneme way for specific reasons, try this link : http://library.creativecow.net/articles/rabinowitz_aharon/lip_synch.php - it contains a downloadable character face and mouth shapes. I think you can use it, just check to make sure it is allowed.