Techniques for displaying comments relative to video frames are described herein. The disclosed techniques include sending message data comprising a comment on a video item by a first client computing device when the first client computing device is in a first state among a plurality of states; receiving bullet screen data comprising comments on the video item sent by the first client computing device and other client computing devices; determining echo bullet screens comprising a plurality of comments on the video item sent by the other client computing devices during a predetermined period; and displaying a bullet screen comprising the comment sent by the first client computing device and the echo bullet screens.