Title :
Towards optimal bit-rate control in video transcoding
Author :
Leventer, Amir ; Porat, Moshe
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
A new low complexity transcoder for pre-encoded MPEG2 video is introduced. Based on the various architectures for video bit-rate reducer, we optimize the compression on the macro-block (MB) level and analyze the resulted quantization errors. We propose a low complexity rate-control algorithm accordingly. Finally, we examine coded video data in order to evaluate our model.
Keywords :
data compression; image sequences; optimal control; optimisation; quantisation (signal); telecommunication control; video coding; coded video data; low complexity transcoder; macro-block level; optimal bit-rate control; optimization; preencoded MPEG2 video; quantization errors; video bit-rate reducer; video compression; video sequences; video transcoding; Computer architecture; Decoding; Discrete cosine transforms; Motion compensation; Optimal control; Quantization; Spatial resolution; Transcoding; Video compression; Video sequences;
Conference_Titel :
Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7750-8
DOI :
10.1109/ICIP.2003.1247232
