Abstract: Playing video in a format that matches user device includes downloading a video from a server; loading the video into a player; checking if the video contains metadata specifying resolution and crop parameters that matches user device; if metadata is found, then identifying a frame from the video and define a focus point in center of frame; limiting view of the frame and reduce/enlarge video resolution inside viewzone based on the metadata or data; displaying viewzone so that vertical dimension of the viewzone matches a vertical dimension of the user device, and the focus point remains in the center of the frame and in the center of the user device; upon user rotation of the user device, re-displaying the frame such that the focus point remains in the center of the device, and a horizontal dimension of the viewzone matches a horizontal dimension of user device; and continuing rendering subsequent frames of the video, layers and effects.

Abstract: A method and computer product for inserting additional frames into a “.GIF” file or modifying existing frames that can only be visible by recipients of the “.GIF” file satisfying a certain criteria are provided. A proprietary applications extension for “.GIF” file format allows for playing different images sequences within the same “.GIF” file to a recipient using a proprietary viewer application. The proprietary viewer application extension for “.GIF” file format allows for playing different image sequences in the “.GIF” viewer. A frame modification extension module contains sequence of images (in a binary form) and identifications that the proprietary “.GIF” viewer (with special extension logic) can substitute some of the “GIF's” image data while playing the file. Thus, the “.GIF” viewer is able to play different images (i.e., hidden embedded frames) than the ones played by a standard “.GIF” viewer to a certain recipient.