Abstract: A method and system for layer based encoding of a 360 degrees video is provided. The method includes receiving, by a server, an input video. The input video includes multiple groups of pictures (GOPs). Each GOP starts from a major anchor frame of the input video and includes frames till next major anchor frame. The method also includes generating a first layer. The first layer includes one encoded frame per GOP. The method further includes generating a first sub-layer. The first sub-layer includes encoded frames of multiple mini-GOPs and reconstructed frames of encoded frames of the first layer. Each mini-GOP includes frames between two major anchor frames. Furthermore, the method includes outputting encoded video including the first layer and the first sub-layer.

Abstract: A method and system for constructing view from multiple video streams is provided. The method includes receiving a view independent stream. The method further includes selecting a first view dependent stream, wherein the view independent stream and the first view dependent stream has at least one different geometry. The method also includes generating end user views corresponding to the view independent stream and the first view dependent stream. Further, the method includes blending the end user views to generate a view for display.

Abstract: A method and system for view optimization of a 360 degrees video is provided. The method includes generating two-dimensional video frame from the 360 degrees video. The macroblocks are generated for the two-dimensional video frame. A foveated region of interest for the two-dimensional video frame is defined based on a given view orientation. DCT (Discrete Cosine Transform) coefficients are generated for the macroblocks. View adaptive DCT domain filtering is then performed on the DCT coefficients using the foveated region of interest. Quantization offset is calculated for the DCT coefficients using the foveated region of interest. The DCT coefficients are quantized using the quantization offset to generate encoded two-dimensional video frame for the view orientation. A new view orientation is then set as the given view orientation and steps of generating, performing, calculating, and quantizing are performed for each view orientation and each video frame to generate view optimized video.

Abstract: Methods and system for reconstructing 360-degree video is disclosed. A video sequence V1 including a plurality of frames associated with spherical content at a first frame rate and a video sequence V2 including a plurality of frames associated with a predefined viewport at a second frame rate is received by a processor. The first frame rate is lower than the second frame rate. An interpolated video sequence V1? of the video sequence V1 is generated by creating a plurality of intermediate frames between a set of consecutive frames of the plurality of frames of the sequence V1 corresponding to the second frame rate of the video sequence V2. A pixel based blending of each intermediate frame of the plurality of the intermediate frames of sequence V1? with a corresponding frame of the plurality of frames the sequence V2 is performed to generate a fused video sequence Vm for displaying.