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Architecture

Open-Loop Transcoder and Closed-Loop Transcoder

Spatial-Domain Video Transcoding

• Reuse motion vector to avoid time-consuming motion estimation (60%~70% of encoding)

Frequency-Domain Transcoding

References

1. Video Transcoding Architectures and Techniques: An Overview 2005
2. A FAST DOWNSIZING VIDEO TRANSCODER FOR H.264/AVC WITH RATE-DISTORTION OPTIMAL MODE DECISION
3. Motion Estimation for Frame-Rate Reduction in H.264 Transcoding