公开(公告)号：US20130279888A1

公开(公告)日：2013-10-24

申请号：US13976119

申请日：2011-05-12

申请人： Shanjun Oak Zeng ,  Keith Hazelet ,  Tiehan Lu ,  Liang Leon Cheng ,  Jie Wu

发明人： Shanjun Oak Zeng ,  Keith Hazelet ,  Tiehan Lu ,  Liang Leon Cheng ,  Jie Wu

IPC分类号： H04N9/87

CPC分类号： H04N9/87 ,  H04N21/4305 ,  H04N21/4307 ,  H04N21/44004

摘要： Techniques are described for determining whether a stream is in a stable state and permitting adjustment of the PTS value when the stream is in a stable state. The stream can be in a stable state when PTS values received over a period of time do not change unexpectedly. For example, when the stream is in a stable state, the PTS value for audio or video can be adjusted based on system buffer levels, i.e., over flow or under flow. The amount of adjustment of the PTS value can be based on whether the buffer level appears to be moving into greater overflow or underflow. In some cases, when the stream is not in a stable state, the audio is permitted to be played back at a sample rate and video is permitted to be played back at a frame rate instead of being controlled by PTS.

摘要翻译： 描述了用于确定流是否处于稳定状态并且当流处于稳定状态时允许PTS值的调整的技术。 当一段时间内接收到的PTS值不会意外改变时，流可以处于稳定状态。 例如，当流处于稳定状态时，音频或视频的PTS值可以基于系统缓冲器级别（即，超过流量或不足流量）进行调整。 PTS值的调整量可以基于缓冲区级别是否似乎进入更大的溢出或下溢。 在一些情况下，当流不处于稳定状态时，允许以采样率播放音频，并允许视频以帧速率播放，而不是由PTS控制。

公开(公告)号：US09179118B2

公开(公告)日：2015-11-03

申请号：US13976119

申请日：2011-05-12

申请人： Shanjun Oak Zeng ,  Keith Hazelet ,  Tiehan Lu ,  Liang Leon Cheng ,  Jie Wu

发明人： Shanjun Oak Zeng ,  Keith Hazelet ,  Tiehan Lu ,  Liang Leon Cheng ,  Jie Wu

IPC分类号： H04N5/85 ,  H04N9/87 ,  H04N21/44 ,  H04N21/43

CPC分类号： H04N9/87 ,  H04N21/4305 ,  H04N21/4307 ,  H04N21/44004

摘要： Techniques are described for determining whether a stream is in a stable state and permitting adjustment of the PTS value when the stream is in a stable state. The stream can be in a stable state when PTS values received over a period of time do not change unexpectedly. For example, when the stream is in a stable state, the PTS value for audio or video can be adjusted based on system buffer levels, i.e., over flow or under flow. The amount of adjustment of the PTS value can be based on whether the buffer level appears to be moving into greater overflow or underflow. In some cases, when the stream is not in a stable state, the audio is permitted to be played back at a sample rate and video is permitted to be played back at a frame rate instead of being controlled by PTS.

摘要翻译： 描述了用于确定流是否处于稳定状态并且当流处于稳定状态时允许PTS值的调整的技术。 当一段时间内接收到的PTS值不会意外改变时，流可以处于稳定状态。 例如，当流处于稳定状态时，音频或视频的PTS值可以基于系统缓冲器级别（即，超过流量或不足流量）进行调整。 PTS值的调整量可以基于缓冲区级别是否似乎进入更大的溢出或下溢。 在一些情况下，当流不处于稳定状态时，允许以采样率播放音频，并允许视频以帧速率播放，而不是由PTS控制。