The subject matter disclosed herein relates generally to industrial automation systems, and, more particularly, to collecting video streams from a variety of video devices in an industrial environment, identifying and analyzing potential problems in the industrial environment using the video streams, and presenting the video streams and data associated with the potential problem to appropriate recipients.

A decoding method for audio video stream synchronization is provided. The audio video stream includes multiple clock references and multiple audio and video data packets. Each of the data packets corresponds to a presentation value. The decoding method includes: reconstructing a clock value according to a first clock reference; determining whether a difference between the clock value and a first presentation value in multiple presentation values is greater than a first range; when the difference between the clock value and the first presentation value is greater than the first range, changing the clock value to a second presentation value in the multiple presentation values; and performing at least one audio video synchronization step according to the clock value set based on the second presentation value.

A decoding method for audio video stream synchronization is provided. The audio video stream includes multiple clock references and multiple audio and video data packets. Each of the data packets corresponds to a presentation value. The decoding method includes: reconstructing a clock value according to a first clock reference; determining whether a difference between the clock value and a first presentation value in multiple presentation values is greater than a first range; when the difference between the clock value and the first presentation value is greater than the first range, changing the clock value to a second presentation value in the multiple presentation values; and performing at least one audio video synchronization step according to the clock value set based on the second presentation value.

Embodiments of the invention provide a method and device for detecting a slice time length in a media play list. The method includes: obtaining a slice time length of a specified slice in the media play list; determining whether the obtained slice time length satisfies a preset condition including lying within a preset range of time length and/or complying with a specified data format; and if not, then determining that the slice time length of the specified slice is abnormal.

Embodiments of the invention provide a method and device for detecting a slice time length in a media play list. The method includes: obtaining a slice time length of a specified slice in the media play list; determining whether the obtained slice time length satisfies a preset condition including lying within a preset range of time length and/or complying with a specified data format; and if not, then determining that the slice time length of the specified slice is abnormal.

Provided is an image data processing method for preventing decrease of a decoding processing capability of an image processing device even if the image processing device is included in a game machine on which many moving pictures having low resolutions are displayed. First, decoding processing is designed (step S1). For example, it is designed in such a manner that a moving picture X is singly processed and that a moving picture Y and a moving picture Z having low vertical resolutions can be combined together to be subjected to decoding processing. Subsequently, each of the moving picture X, the moving picture Y, and the moving picture Z is encoded (step S2). Next, encoded data of the moving picture X is singly decoded, and the moving picture X is restored and displayed on a display unit of the image processing device at a predetermined timing. Meanwhile, respective pieces of encoded data of the moving picture Y and the moving picture Z are combined together and are decoded depending on respective display timings, and the moving picture X and the moving picture Y are restored and further separated from each other to be displayed on the display unit at the respective timings (step S3).

Provided is an image data processing method for preventing decrease of a decoding processing capability of an image processing device even if the image processing device is included in a game machine on which many moving pictures having low resolutions are displayed. First, decoding processing is designed (step S1). For example, it is designed in such a manner that a moving picture X is singly processed and that a moving picture Y and a moving picture Z having low vertical resolutions can be combined together to be subjected to decoding processing. Subsequently, each of the moving picture X, the moving picture Y, and the moving picture Z is encoded (step S2). Next, encoded data of the moving picture X is singly decoded, and the moving picture X is restored and displayed on a display unit of the image processing device at a predetermined timing. Meanwhile, respective pieces of encoded data of the moving picture Y and the moving picture Z are combined together and are decoded depending on respective display timings, and the moving picture X and the moving picture Y are restored and further separated from each other to be displayed on the display unit at the respective timings (step S3).

An encoded representation of a picture of a video stream is decoded by retrieving buffer description from the encoded representation. The buffer description information is used to determine at least one picture identifier identifying a respective reference picture as decoding reference for the picture. A decoded picture buffer is updated based on the determined picture identifier. The encoded representation of the picture itself comprises the information needed by a decoder to identify the reference pictures required to decode the encoded representation.

A cognitive loudspeaker system includes a control station (CS) that broadcasts clock control messages and separate playback messages to a plurality of sound production stations (SPSs). The clock control messages are generated in response to a CS clock signal. Each SPS generates a corresponding local conductor clock signal in response to the received control clock messages and a local SPS clock signal, such that all of the local conductor clock signals are synchronized. Each SPS also generates local digital playback samples in response to the received playback messages. The local digital playback samples are written to an output buffer in response to the local SPS clock signal, and are read from the output buffer in response to the local conductor clock signal.

Provided is an image data processing method. First, decoding processing designed (step S1) in such a manner that a moving picture X is singly processed and that a moving picture Y and Z having low vertical resolutions can be combined together to be subjected to decoding processing. Subsequently, each of the moving picture X, Y, and Z is encoded (step S2). Next, encoded data of the moving picture X is singly decoded, and the moving picture X is restored and displayed on a display unit of the image processing device at a predetermined timing. Meanwhile, respective pieces of encoded data of the moving picture Y and Z are combined together and are decoded depending on respective display timings, and the moving picture X and Y are restored and further separated from each other to be displayed on the display unit at the respective timings (step S3).