Abstract
In present study the efficiency of transcoding H.264 compressed video stream depending on the number of decoders and encoders worker threads was investigated. Tests were done using FFmpeg open source libraries based on Intel and ARM platforms. Both CPUs used were quad core and could run up to 4 threads. The effect of the number of decoders and encoder worker threads was studied upon the same input test video. The obtained results indicate that the greater the number of encoder threads produces the greater the fps value. At the same time, using the default encoder threads number provides better performance than the explicitly set value of 4 encoder threads.
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