In many applications including Internet video broadcast and interactive TV, video streams are transmitted over various networks. In order to fulfill the requirement of the users who want to watch a part of the video stream, start playback at a random location, and jump to another location, the service provider has to implement the random access functionality. In addition, when the video stream is transmitted over error-prone networks like wireless LAN, the random access point can be used as a recovery point which enables the user device to refresh the decoding process corrupted by the transmission error. In this paper, we propose a simple transcoding algorithm inserting the random access point in the pre-encoded video stream. The multimedia server adopting the proposed transcoding algorithm can support the error-resilient transmission as well as the playback at random location. Experimental results show that the proposed method can gain significant reduction in the complexity without introducing degradation on visual quality.
- And instantaneous decoder refresh pictures
- Scalable video coding
- Streaming services
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering