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Conference Paper
Reducing Spatial Resolution for MPEG-4 / H.264 Transcoding with Efficient Motion Reusing
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- Authors
- Toan Nguyen Dinh, Jae Myung Yoo, Sung Chan Park, Guee Sang Lee, June-Young Chang, Han-Jin Cho
- Issue Date
- 2007-10
- Citation
- International Conference on Computer and Information Technology (CIT) 2007, pp.577-580
- Language
- English
- Type
- Conference Paper
- Abstract
- Efficient downscaling in a transcoder is important when the output video should be converted to a lower resolution video. In this paper, we present a fast MPEG-4 Simple Profile (SP) to H.264 transcoder with reducing spatial resolution from CIF to QCIF video format Based on frame image characteristics and motion information in MPEG-4 decoder, we limit motion modes, generate prediction motion vectors and build an adaptive search range for motion estimation in H.264 encoder. Simulation results show that our transcoder reduces transcoding time considerably while video quality is kept almost optimal. © 2007 IEEE.
- KSP Keywords
- Adaptive search range, Frame image, H.264 encoder, Motion Vector(MV), Motion estimation(ME), Motion information, Mpeg-4, Video quality, motion modes, simulation results, spatial resolution