The various embodiments disclosed herein relate to systems and methods for generating a derived media clip corresponding to a live event. In particular, the system comprises a processor configured to receive a plurality of content streams corresponding to the live event, each content stream corresponding to a content source. The processor is further configured to generate an annotated timeline for one or more of the plurality of content streams and receive a first user input requesting the derived media clip. The processor is then configured to generate the derived media clip based on the user input and the annotated timeline.

Exemplary embodiments of systems and methods are provided for automatically creating time-based video metadata for a video source and a video playback mechanism. An automated logging process can be provided for receiving a digital video stream, analyzing one or more frames of the digital video stream, extracting a time from each of the one or more frames analyzed, and creating a clock index file associating a time with each of the one or more analyzed frames. The process can further provide for parsing one or more received data files, extracting time-based metadata from the one or more parsed data files, and determining a frame of the digital video stream that correlates to the extracted time based metadata.

An audio and/or video generation apparatus which is arranged in operation to generate audio and/or video signals representative of an audio and/or video source, the audio and/or video generation apparatus comprising a recording unit which records the audio and/or video signals on a recording medium, wherein the audio and/or video generation apparatus is arranged to receive metadata associated with the audio and/or video signals generated by a data processor, the recording unit records the metadata on the recording medium with the audio and/or video signals. The data processor receives signals representative of the time codes of the recorded audio/video signals, and the metadata includes time code data representative of the in and out points of a take of the audio/video signals generated by the data processor. The metadata also includes unique identification code for identifying the audio/video signals. The unique identification code is a UMID or the like.

An audio and/or video generation apparatus which is arranged in operation to generate audio and/or video signals representative of an audio and/or video source, the audio and/or video generation apparatus comprising a recording unit which records the audio and/or video signals on a recording medium, wherein the audio and/or video generation apparatus is arranged to receive metadata associated with the audio and/or video signals generated by a data processor, the recording unit records the metadata on the recording medium with the audio and/or video signals. The data processor receives signals representative of the time codes of the recorded audio/video signals, and the metadata includes time code data representative of the in and out points of a take of the audio/video signals generated by the data processor. The metadata also includes unique identification code for identifying the audio/video signals. The unique identification code is a UMID or the like.

The various embodiments disclosed herein relate to systems and methods for generating a derived media clip corresponding to a live event. In particular, the system comprises a processor configured to receive a plurality of content streams corresponding to the live event, each content stream corresponding to a content source. The processor is further configured to generate an annotated timeline for one or more of the plurality of content streams and receive a first user input requesting the derived media clip. The processor is then configured to generate the derived media clip based on the user input and the annotated timeline.

Techniques are provided for associating comments with certain positions within a video (or audio) timeline. Multiple users compose comments, such as questions, and cause those comments to be stored in association with the video. Each comment is stored in association with a specific point or section in the video timeline. Later, another user can view the comments and select a particular comment, which causes the video to be played at the position in the timeline associated with the particular comment. Additionally or alternatively, playing a particular portion of a video may cause one or more comments that are associated with the particular portion to be displayed.

This disclosure provides techniques of synchronizing the playback of two recorded videos of the same surgical procedure. In one aspect, a process for generating a composite video from two recorded videos of a surgical procedure is disclosed. This process begins by receiving a first and second surgical videos of the same surgical procedure. The process then performs phase segmentation on each of the first and second surgical videos to segment the first and second surgical videos into a first set of video segments and a second set of video segments, respectively, corresponding to a sequence of predefined phases. Next, the process time-aligns each video segment of a given predefined phase in the first video with a corresponding video segment of the given predefined phase in the second video. The process next displays the time-aligned first and second surgical videos for comparative viewing.

There is provided a method, apparatus and system for indexing content based on relative time information. The method, apparatus and system include determining relative time information of at least one of a time interval of at least a portion of the content and an event occurring in the content, generating time metadata that indexes in absolute time the determined relative time information and communicating the time metadata for storage. The method, apparatus and system can further include receiving a request for the at least one of a time interval of at least a portion of the content and an event occurring in the content, the request identifying a desired content portion using relative time information, using the time metadata to determine a portion of the content relative to the time information and communicating the content portion relative to the time information to a requester.

The present invention discloses a synchronized audio playing method, apparatus, and system for playing audio synchronously. By outputting designated data using a designated data buffer area before arrival of the starting time point of synchronous playing so as to make an audio link in a stable state, the method shuns from the impact of factors like system process scheduling interruption and system hardware on synchronous playing, thereby enhancing the precision of synchronous playing; moreover, upon arrival of the starting time point of synchronous playing, by computing a tuning amount of the audio data in the local synchronization buffer area, adjusting the audio data in the local synchronization buffer area according to the tuning amount, and meanwhile performing output playing on the tuned audio data, the method achieves audio synchronization play. Compared with the prior art, the present invention needn't add playing timestamp information to an audio data stream, and the playing terminal needn't process timestamp information during the entire playing procedure, thereby effectively increasing the flexibility of synchronous playing.

There is provided a method, apparatus and system for indexing content based on relative time information. The method, apparatus and system include determining relative time information of at least one of a time interval of at least a portion of the content and an event occurring in the content, generating time metadata that indexes in absolute time the determined relative time information and communicating the time metadata for storage. The method, apparatus and system can further include receiving a request for the at least one of a time interval of at least a portion of the content and an event occurring in the content, the request identifying a desired content portion using relative time information, using the time metadata to determine a portion of the content relative to the time information and communicating the content portion relative to the time information to a requester.