Perceptual Quality Maximization for Video Calls With Packet Losses by Optimizing FEC, Frame Rate, and Quantization.
IEEE Transactions on Multimedia(2018)
摘要
We consider video calls affected by bursty packet losses, where frame-level forward error correction (FEC) is employed due to delay constraints, and damaged frames and others predicted from them are discarded. Here, a high frame rate (FR) at low bitrates leads to large quantization step sizes (QS), small frames, and suboptimal FEC, whereas a low FR at high bitrates reduces the perceptual quality. ...
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关键词
Encoding,Forward error correction,Bit rate,Packet loss,Streaming media,Delays
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