发布时间:2013-11-26 13:25:30
avcodec_encode_video2(c, &pkt, dstVideoFrame, &got_output); 将pkt.data直接写入文件,用ffplay播放时会很快;对于上面的结果用ffmpeg -i a b;直接转换一下,播放速度变慢;(下面讨论a就是原始编码文件,b就是ffmpeg的转码文件)中pkt.pts 就是dstVideoFrame中的pts; 对于直接将pkt的data写.........【阅读全文】
发布时间:2013-09-28 16:51:26
Overview of the High Efficiency Video Coding(HEVC) Standard之四J. 熵编码 Entropy CodingHEVC specifies only one entropy coding method, CABAC[13] rather than two as in H.264/MPEG-4 AVC. The core algorithmof CABAC is unchanged, and the following subsectionspresent several aspects of how it.........【阅读全文】
发布时间:2013-09-28 16:51:19
Overview of the High Efficiency Video Coding(HEVC) Standard之四J. 熵编码 Entropy CodingHEVC specifies only one entropy coding method, CABAC[13] rather than two as in H.264/MPEG-4 AVC. The core algorithmof CABAC is unchanged, and the following subsectionspresent several aspects of how it.........【阅读全文】
发布时间:2013-09-28 16:51:11
Overview of the High Efficiency Video Coding(HEVC) Standard之四I. 变换,缩放,和量化 Transform, Scaling, and QuantizationHEVC uses transform coding of the prediction error residualin a similar manner as in prior standards. The residual block ispartitioned into multiple square TBs, as des.........【阅读全文】
发布时间:2013-09-28 16:51:05
Overview of the High Efficiency Video Coding(HEVC) Standard之四H. 帧间预测Interpicture Prediction1) 预测块(PB)的划分PB Partitioning: Compared to intrapicture-predictedCBs, HEVC supports more PB partition shapes forinterpicture-predicted CBs. The partitioning modes ofPART_2N×2N, PART.........【阅读全文】