Abstract
Video transcoding is one of the most essential technologies in consumer electronics server and gateway products for a variable bitrate video streaming system. Especially, for a real-time streaming system, drift-error resilient coded bitstreams that do not require high complexity transcoding processes are desired. For the generation of drifterror resilient coded bitstreams at the encoder side, an investigation on the drift-error propagation characteristic in H.264/AVC by applying different motion compensation (MC) precisions are carried out in this paper. The results show that the drift-error propagation in half-pixel MC precision increases due to the usage of six-tap filter. For quarter-pixel MC precision, the drift-error propagation decreases. Besides that, we found out that the requantization parameter and MC precision only affects the amount of error in the requantized frame but amount of error propagation depends on the MC precision and sequence of the pixel value. It is also found that drift-error propagation ratio is defined at some point regardless of MC precisions.
Original language | English |
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Article number | 5955237 |
Pages (from-to) | 888-896 |
Number of pages | 9 |
Journal | IEEE Transactions on Consumer Electronics |
Volume | 57 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2011 May |
Externally published | Yes |
Keywords
- Drift-Error
- Drift-Error Resilient Bitstream
- H.264/AVC Transcoder
- Motion Compensation Precision
- Six-Tap Filter
- Variable Bitrate Streaming System
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering