You can't have video chat with audio, video, codecs, p2p, the whole thing. The only piece you can remove from the whole and still have video chat work is the data channel.
If all you want is the data channel, then you can ignore the audio/video part, and just use the data channel separately. It doesn't do you any harm.
If all you want is the data channel, then you can ignore the audio/video part, and just use the data channel separately. It doesn't do you any harm.