A playback system for a video conferencing record includes a first electronic device obtaining a video conferencing record and a second electronic device receiving the video conferencing record. The second electronic device analyzes the video conferencing record into a plurality of chunks based on recognizing each dialog in the video conferencing record, analyzing the topic intensity of each dialog, and analyzes the relevance of each chunk to move it out of a dialog or add it to another. Video clips from the video conferencing record can be retrieved according to a keyword index, and the video clips accordingly displayed on a display. A playback method for such video conferencing record or the parts is also provided.