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1. 发明授权

US06678332B1 Seamless splicing of encoded MPEG video and audio 有权
标题翻译：编码MPEG视频和音频的无缝拼接
公开(公告)号：US06678332B1
公开(公告)日：2004-01-13
申请号：US09540347
申请日：2000-03-31
申请人： Daniel Gardere , John Forecast , Peter Bixby , Sorin Faibish , Wayne W. Duso , Seyfullah H. Oguz , Sebastian Keller , Michel Noury , Jean Louis Rochette
发明人： Daniel Gardere , John Forecast , Peter Bixby , Sorin Faibish , Wayne W. Duso , Seyfullah H. Oguz , Sebastian Keller , Michel Noury , Jean Louis Rochette
IPC分类号： H04B166
CPC分类号： H04N21/23424 , H04N21/23608 , H04N21/41407 , H04N21/44016
摘要： Predictive analysis is performed upon encoded digital motion video (such as an MPEG Transport Stream) to facilitate real-time splicing. The predictive analysis includes estimation of upper and lower bounds of the data levels in a decoder's video and audio buffers for splicing in such a way as to prevent buffer overflow and underflow. This enables buffer management techniques including padding or stuffing, micro-restamping, freeze or repeat of frames, skip or drop of frames, alignment of audio with video. The predictive analysis also includes analysis of the structure of the encoded audio including audio access units (AAUs) and compression windows (AFs), prediction in the compressed domain of initial conditions of the decoder buffer levels for every single Elementary Stream (ES) component of a Transport Stream (TS), and identification of valid splicing In Points and Out Points based on the predicted buffer levels without any special encoder. This permits splicing of different compressed audio types without consideration of the details of the compression mechanism. The predictive analysis may also include recommendations or marking. The analysis is performed on ingest of the data as a pre-processing in preparation for splicing of a new file on early queuing in a data storage system before streaming.
摘要翻译：在编码的数字运动视频（例如MPEG传输流）上执行预测分析以便于实时拼接。预测分析包括在解码器的视频和音频缓冲器中估计数据电平的上限和下限以进行拼接，以防止缓冲器溢出和下溢。这使得能够实现缓冲器管理技术，包括填充或填充，微型停止，帧的冻结或重复，帧的跳过或掉落，音频与视频的对齐。预测分析还包括对包括音频访问单元（AAU）和压缩窗口（AF）的编码音频的结构的分析，在压缩域中对每个单个基本流（ES）分量的解码器缓冲器级别的初始条件的预测传输流（TS），以及基于没有任何特殊编码器的预测缓冲器级别来识别有效拼接点和点。这允许不考虑压缩机构的细节来剪接不同的压缩音频类型。预测分析还可能包括建议或标记。对数据进行分析，作为预处理，准备在流媒体之前在数据存储系统的早期排队中拼接新文件。

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