Abstract
We analyze the connection between viewer-perceived quality and encoding schemes. The encoding schemes depend on transmission bit-rate, MPEG compression depth, frame size and frame rate in a constant bit-rate (CBR) video transmission of a MPEG-2 video sequence. The compressed video sequence is transmitted over a lossy communication network with quality of service (QoS) and a certain Internet (IP) loss model. On the end-user side, viewer-perceived quality depends on changes in the network conditions, the video compression, and the video content complexity. We demonstrate that, when jointly considering the impact of coding bit rate, packet loss, and video complexity, there is an optimal encoding scheme, which also depends on the video content. We use a set of subjective tests to demonstrate that this optimal encoding scheme maximizes the vi(pwer-perceived quality.
| Original language | English |
|---|---|
| Article number | 087003 |
| Journal | Optical Engineering |
| Volume | 45 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1 Aug 2006 |
Keywords
- Compression
- Encoding scheme
- Internet protocol
- Motion Picture Experts Group
- Packet loss ratio
- Perceived quality
- Quality of service
- Subjective tests
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- General Engineering