Abstract: Methods apparatus and computer programs products for creating a multimedia presentation having video frames and video segments with synchronized audio are disclosed. Audio-video data is separated into an audio stream and the video sequence. The video sequence is divided into video segments, with each video segment comprising a group of frames. For each video segment an audio significance measure is calculated using the audio stream. Using the audio significance measure, the video segment is selected in its entirety or, alternatively, one or more slide frames are extracted from the corresponding group of frames. The selection of video segments or slide frames can also be performed on the basis of an additional video significance measure. The audio stream and selected video segment and slide frames are synchronized, then synchronously reproduced as the multimedia presentation.

Abstract: A system is described for converting full motion video (102) into multiple markup language (HTML, WML, BHTML) presentations (140) targeted to different devices (144-152) and users. The markup language presentations (140) consist of different combinations of important visuals, audio and transcript of the full motion video (102), depending on the audio and visual/text display capability of the devices (144-152) and the user's requirements (112, 116). The important visuals are keyframes selected (118) from the video (102) based on significance measure (114, 112) associated to different segments in the video (102). The combinations of audio, visuals and transcript can be played in a synchronous/asynchronous manner. The user can control the rate of visuals and transcript displayed.

Abstract: Methods apparatus and computer programs products for creating a multimedia presentation having video frames and video segments with synchronized audio are disclosed. Audio-video data is separated into an audio stream and the video sequence. The video sequence is divided into video segments, with each video segment comprising a group of frames. For each video segment an audio significance measure is calculated using the audio stream. Using the audio significance measure, the video segment is selected in its entirety or, alternatively, one or more slide frames are extracted from the corresponding group of frames. The selection of video segments or slide frames can also be performed on the basis of an additional video significance measure. The audio stream and selected video segment and slide frames are synchronized, then synchronously reproduced as the multimedia presentation.

Abstract: A method and apparatus is disclosed for converting audio-video data from a full motion video format to a slide show presentation with synchronised sound. The full motion video is received from a source, separated into an audio stream and a video sequence, the video sequence is divided into a number of shorter video segments, key frames are extracted for each segment and a significance measure is calculated for each frame. A database is created wherein the extracted data is stored for subsequent (off-line) processing and reproduction. The system may have more than one system retrieving data from the database, selecting slide frames and subsequently displaying a slide presentation.