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The gist of the invention is a subtitling format encompass-ing elements of enhanced syntax and semantic to provide im-proved animation capabilities. The disclosed elements im-prove subtitle performance without stressing the available subtitle bitrate. This will become essential for authoring content of high-end HDTV subtitles in pre-recorded format, which can be broadcast or stored on high capacity optical media, e.g. The Blue-ray Disc. The invention includes abili-ties for improved authoring possibilities for the content production to animate subtitles. Kodi diagnozov po f 16chn. For subtitles that are separate from AV material, the method includes using one or more superimposed subtitle layers, and displaying only a se-lected part of the transferred subtitles at a time.

Further, colors of a selected part of the displayed subtitles may be modified, e.g. METHOD AND SYSTEM FOR STAGGERED STATISTICAL MULTIPLEXING WO. In a multi-channel video transmission system in which channel video segments are operated on by corresponding channel video encoders (709) to encode the video segments into frames organized into groups of defined frame types, an apparatus and method to cause a temporal staggering for the processing of a specific frame type among the various channels. In one preferred embodiment, the apparatus includes a frame counter (701) to synchronize reset signals associated with the corresponding channel video encoders (709) and a means for providing a timing offset to channel video encoders corresponding to a selected frame stagger for a particular corresponding channel. METHOD AND APPARATUS FOR CODING/DECODING ITEMS OF SUBTITLING DATA WO. Subtitling can be based on either pixel data or on character data.

Character data allow very efficient encoding, but from character strings alone, subtitling can not be converted into a graphical representation to be overlaid over video. The intended character set, font and e.g. Font size, must either be coded explicitly within the subtitling bitstream or an implicit assumption must be made about them. In pixel-based subtitling, subtitling frames are conveyed directly in the form of graphical representations by describing them as (typically rectangular) regions of pixel values on the AV screen, at the cost of considerably increased bandwidth for the subtitling data.

According to the invention, a font mem-ory is used that allows an efficient realisation of pixel-based subtitle lettering, because the glyphs need only be transmitted once and thereafter are referenced by relatively compact character references during the AV event. Thereby the invention combines the advantages of pure pixel-based and pure-character-based subtitling schemes, while mostly avoiding their respective shortcomings. A SYSTEM AND METHOD FOR DETERMINING LIP SYNCHRONIZATION BETWEEN AUDIO AND VIDEO IN A DIGITIZED ENVIRONMENT USING BUFFER CALCULATION WO. The disclosed embodiments relate to a system (23) and method (400) for maintaining synchronization between a video signal (29) and an audio signal (31) that are processed using clocks that are locked. The system (23) may comprise a component (34) that determines at least one initial level of a buffer, a component (34) that determines at least one current level of the buffer, and a component (34) that determines an amount of drift by comparing the at least one initial level of the buffer to the at least one current level of the buffer and adjusts the clocks to maintain the initial midpoint level of the buffer if the amount of drift reaches a threshold level. A METHOD AND SYSTEM FOR MAINTAINING LIP SYNCHRONIZATION WO. The disclosed embodiments relate to a system (23) and method (200) for maintaining synchronization between a video signal (29) and an audio signal (31).

The video signal (29) and the audio signal (31) are processed using clocks that are locked. The invention provides an apparatus and method for displaying video pictures. The apparatus comprises a picture display screen (630) having a first aspect ratio and a picture decoder (610) for decoding a video signal including at least one picture.