TITLE:
Evaluation of Impairment Caused by MPEG Video Frame Loss
AUTHORS:
Carlos Alexandre Gouvea da Silva, Guilherme Fernandes de Souza Miguel, João Guilherme Sauer, Carlos Marcelo Pedroso
KEYWORDS:
MPEG-4, Video Streaming, PSNR, Frame Loss
JOURNAL NAME:
Engineering,
Vol.9 No.5,
May
27,
2017
ABSTRACT: This article presents a study on the impact of video frame losses on the quality perceived by users. Video compression standards, such as MPEG, use a sequence of frames called Group of Pictures (GOP), which is a video compression method which a frame is expressed in terms of one or more neighboring frames. This dependence between frames impacts directly in the quality because a loss of a reference frame prevents the decoding of other frames in GOP, thereby reducing the user-perceived quality. The assessment of quality in this article is estimated by Peak Signal Noise Ratio (PSNR), which compares the original and the received images. Computer simulations were used to show that the degradation on the quality may vary for different patterns of GOPs and type of lost frames.