Name
Abstract | ||
|---|---|---|
In this paper, a temporal resolution reduction transcoding method that transforms an MPEG-4 video bitstream into an H.264 video bitstream is proposed. The block modes and motion vectors in the MPEG-4 bitstream are utilized in the H.264 encoder for the block mode conversion and motion vector interpolation methods. Four types of motion vector interpolation methods are proposed in order to avoid the use of brute-force motion estimation in H.264. According to the experimental results, the proposed methods achieve a 3~4 times improvement in the computational complexity compared to the cascade pixel-domain transcoding method, while the PSNR (peak signal to noise ratio) is degraded by 0.2~0.9 dB depending on the bitrates. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1007/s11042-007-0123-x | Multimedia Tools Appl. |
Keywords | Field | DocType |
MPEG-4,H.264,Transcoding,Motion vector,Macroblock | Peak signal-to-noise ratio,Computer vision,Transcoding,Block-matching algorithm,Video post-processing,Quarter-pixel motion,Computer science,Artificial intelligence,Motion estimation,Bitstream,Motion vector | Journal |
Volume | Issue | ISSN |
35 | 2 | 1380-7501 |
Citations | PageRank | References |
2 | 0.38 | 6 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yung-ki Lee | 1 | 12 | 1.94 |
| Seong-Seon Lee | 2 | 2 | 0.38 |
| Yung-Lyul Lee | 3 | 259 | 29.12 |