Abstract: Methods and apparatus are disclosed for codec negotiation in a decentralized conference. In one aspect, a method for codec negotiation in a decentralized conference is provided. The method includes transmitting, from a first device, an offer message to two or more devices for establishing a conference, the offer message including a list of codec capabilities supported by the first device. The method further includes receiving, at the first device, a response message from each of the two or more devices, the response message including a codec type selected from the list of codec capabilities supported by the first device and including a list of codec capabilities supported by a device of the two or more devices. The method further includes determining, at the first device, whether each of the two or more devices can continue to participate in the conference based on the list of codec capabilities in each of the response messages.