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Design and implementation of an efficient H.263 video encoder
KTH, Superseded Departments, Teleinformatics. (CCSlab)
1997 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this Master Thesis, a H.263 encoder has been implemented and optimized for speed. This has been done to investigate if there is a possibility to encode video on a workstation in real time without any additional compression hardware. The following parts of H.263 has been optimized:

  • Motionvector search
  • Quantization
  • Inverse cosine transformation
  • Forward cosine transformation
  • Interpolation of frames
  • Bit generating

The speed improvements of using Single Instruction, Multiple Data (SIMD) instructions has also been examined. With all optimizations, 30-50 frames per second was achieved for the QCIF format (176x144 pixels) on a SUN 170MHz UltraSparc. Compared to a publicly available encoder, TMN v2.0, the optimized encoder in this thesis is more than five times faster.

Place, publisher, year, edition, pages
1997. , 46 p.
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-96668OAI: diva2:531952
Subject / course
Educational program
Master of Science in Engineering - Electrical Engineering
1997-04-24, Seminar room "Telegrafen", Isafjordsgatan 22, Kista, 17:00 (English)
Available from: 2012-06-14 Created: 2012-06-08 Last updated: 2013-09-09Bibliographically approved

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