scholarly journals Efficient Audio/Video Synchronization Method for Video Telephony System in Consumer Cellular Phones

2006 ◽  
Author(s):  
Chanwoo Kim ◽  
Kwang-deok Seo ◽  
Wonyong Sung ◽  
Soon-heung Jung
Keyword(s):  
Cellular Phones ◽  
Video Telephony ◽  
Synchronization Method ◽  
Video Synchronization ◽  
Audio Video

Audio-Video Synchronization Method Based on Playback Time

2013 ◽  
Vol 300-301 ◽  
pp. 1677-1680 ◽  
Author(s):  
Jia Bing Fu ◽  
He Wei Yu
Keyword(s):  
Experimental Results ◽  
Key Frame ◽  
Synchronization Method ◽  
System Overhead ◽  
Video Synchronization ◽  
Audio Video

This paper proposes an audio and video synchronization method based on playback time. In ordinary playing process, the playback rate of audio is constant, so we can locate the playback time of audio and video by locating the key frame to get synchronization. Experimental results show that this method can get synchronization between audio and video and be achieved simply, furthermore, it can reduce the system overhead for synchronization.

Secure Information Delivery through High Bitrate Data Embedding within Digital Video and its Application to Audio/Video Synchronization

2012 ◽  
Vol 6 (4) ◽  
pp. 71-93
Author(s):  
Ming Yang ◽  
Chih-Cheng Hung ◽  
Edward Jung
Keyword(s):  
Video Compression ◽  
Information Hiding ◽  
Secure Communication ◽  
Digital Video ◽  
Lossy Compression ◽  
Data Encryption ◽  
Practical Applications ◽  
Secure Information ◽  
Video Synchronization ◽  
Audio Video

Secure communication has traditionally been ensured with data encryption, which has become easier to break than before due to the advancement of computing power. For this reason, information hiding techniques have emerged as an alternative to achieve secure communication. In this research, a novel information hiding methodology is proposed to deliver secure information with the transmission/broadcasting of digital video. Secure data will be embedded within the video frames through vector quantization. At the receiver end, the embedded information can be extracted without the presence of the original video contents. In this system, the major performance goals include visual transparency, high bitrate, and robustness to lossy compression. Based on the proposed methodology, the authors have developed a novel synchronization scheme, which ensures audio/video synchronization through speech-in-video techniques. Compared to existing algorithms, the main contributions of the proposed methodology are: (1) it achieves both high bitrate and robustness against lossy compression; (2) it has investigated impact of embedded information to the performance of video compression, which has not been addressed in previous research. The proposed algorithm is very useful in practical applications such as secure communication, captioning, speech-in-video, video-in-video, etc.

Assessing the importance of audio/video synchronization for simultaneous translation of video sequences

2012 ◽  
Vol 18 (6) ◽  
pp. 445-457 ◽  
Author(s):  
Nicolas Staelens ◽  
Jonas De Meulenaere ◽  
Lizzy Bleumers ◽  
Glenn Van Wallendael ◽  
Jan De Cock ◽  
...  
Keyword(s):  
Video Sequences ◽  
Video Synchronization ◽  
Audio Video ◽  
Simultaneous Translation
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