You only have two choices nowadays, one lossy codec and one lossless codec. You can switch using the setting Graphics > Advanced > Frame Dumps Use FFV1.
Also, in case you'd like to make the lossy codec look better rather than switching to the lossless codec, you can edit the BitrateKbps setting in GFX.ini. It's unfortunate that it isn't available in the GUI as of now...
Also, in case you'd like to make the lossy codec look better rather than switching to the lossless codec, you can edit the BitrateKbps setting in GFX.ini. It's unfortunate that it isn't available in the GUI as of now...