Video Transcoding for Wireless Video - PowerPoint PPT Presentation

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Video Transcoding for Wireless Video

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1. Video Transcoding for Wireless Video. Wireless Device Has Limited ... Bovik, 'A Fast and Memory Efficient Video Transcoder for Low Bit Rate Wireless ... – PowerPoint PPT presentation

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Title: Video Transcoding for Wireless Video


1
Video Transcoding for Wireless Video
  • Wireless Device Has Limited Resources
  • Processing power
  • Memory
  • Display capability
  • Change GOP Structure
  • Save memory
  • Reduce decoding complexity
  • Frame Size Down-sampling
  • Large bit rate reduction
  • Fit display screens of most
  • mobile devices
  • MPEG1/2 to MPEG4

720 x 480
360 x 240
2
Video Transcoding Techniques
  • Previous Solution Shanableh Ghanbari, 00
  • Proposed Solution

3
Down-scale Decoder
  • Save More Than 50 of Memory
  • Reduce Computational Complexity by 70

4
Experimental Results
  • Average PSNR Degradation is 0.34dB at 384 kb/s

S. Liu, and A. C. Bovik, A Fast and Memory
Efficient Video Transcoder for Low Bit Rate
Wireless Communications , ICASSP 2002, accepted.
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