Method and system for measuring audio and video synchronization error of audio/video encoder system and analyzing tool thereof

A method for measuring audio and video synchronization error of an audio/video encoder system, said method comprising steps of:

• (a) producing a reference video data having a first time length and a reference audio data having a second time length and including a particular audio pattern;
• (b) inputting said reference video data and said reference audio data into said audio/video encoder system to produce an encoded video data and an encoded audio data;
• (c) processing said encoded video data and said encoded audio data respectively to produce a detected video data having said first time length and a detected audio data having said second time length including and said particular audio pattern;
• and
• (d) detecting a first time point of a video data of said reference video data synchronized with said particular audio pattern of said reference audio data and a second time point of a video data of said detected video data synchronized with said particular audio pattern of said detected audio data by an analyzing tool, and calculating a difference between said first time point and said second time point.

A system for measuring audio and video synchronization error of an audio/video encoder system, said system comprising:

• an audio/video data supplying device for providing a reference video data having a first time length and including a particular image pattern, and a reference audio data having a second time length;
• an audio/video encoder system for receiving said reference video data having said first time length and including said particular image pattern and said reference audio data having said second time length and producing an encoded video data and an encoded audio data;
• and
• a data processing device comprising a readable media wherein recording a computer program product is to receive said encoded video data and said encoded audio data, produce a detected video data having said first time length and including said particular image pattern and a detected audio data having said second time length, detect a first time point of an audio data included in said reference audio data synchronized with said particular image pattern included in said reference video data and a second time point of an audio data included in said detected audio data synchronized with said particular image pattern included in said detected video data, and calculate a difference between said first time point and said second time point.

A system for measuring audio and video synchronization error of an audio/video encoder system, said system comprising:

• an audio/video data supplying device for providing a reference video data having a first time length and a reference audio data having a second time length and including a particular audio pattern;
• an audio/video encoder system for receiving said reference video data having said first time length and said reference audio data having said second time length and including said particular audio pattern and producing an encoded video data and an encoded audio data;
• and
• a data processing device comprising a readable media wherein recording a computer program product is to receive said encoded video data and said encoded audio data, produce a detected video data having said first time length and a detected audio data having said second time length and including said particular audio pattern, detect a first time point of a video data included in said reference video data synchronized with said particular audio pattern included in said reference audio data and a second time point of a video data included in said detected video data synchronized with said particular audio pattern included in said detected audio data, and calculate a difference between said first time point and said second time point.

An analyzing tool stored in a computer program product, comprising:

• an analyzing device for receiving a reference video data having a first time length and including a particular image pattern and a system stream produced by said reference audio data having a second time length via an audio/video encoder system and producing a video stream and an audio stream;
• an audio decoder device for receiving said audio stream and outputting a detected audio data;
• a video decoder device for receiving said video stream and outputting a detected video data including said particular image pattern and having said first time length;
• and
• an analyzing program comprising a series of operation instructions for detected a first time point of an audio data of said reference audio data synchronized with said particular image pattern of said reference video data and a second time point of an audio data of said reference audio data synchronized with said particular image pattern of said reference video data and calculating a difference of said first time point and said second time point.

An analyzing tool stored in a computer program product, comprising:

• an analyzing device for receiving a reference video data having a first time length and a system stream produced by said reference audio data having a second time length and including a particular audio pattern via an audio/video encoder system and producing a video stream and an audio stream;
• an audio decoder device for receiving said audio stream and outputting a detected audio data;
• a video decoder device for receiving said audio stream and outputting a detected audio data comprising said particular audio pattern and having said second time length;
• and
• an analyzing program comprising a series of operation instructions for detecting a first time point of a video data of said reference video data synchronized with said particular audio pattern of said reference audio data and a second time point of a video data of said reference video data synchronized with said particular audio pattern of said reference audio data and calculating a difference of said first time point and said second time point.