SINGLE PASS VARIABLE BIT RATE CONTROL STRATEGY AND ENCODER FOR PROCESSING A VIDEO FRAME OF A SEQUENCE OF VIDEO FRAMES

SINGLE PASS VARIABLE BIT RATE CONTROL STRATEGY AND ENCODER FOR PROCESSING A VIDEO FRAME OF A SEQUENCE OF VIDEO FRAMES

An encode control strategy is provided for variable bit rate encoding of a sequence of video frames in a single pass. The control strategy includes determining whether a video frame has a complexity level statistically outside a defined range from a complexity level of at least one preceding frame o...

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Bibliographische Detailangaben
Hauptverfasser: BOICE CHARLES E, SCHAEFER JOSEPH G, RATAKONDA KRISHNA C, UNDERWOOD JOSEPH H
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:An encode control strategy is provided for variable bit rate encoding of a sequence of video frames in a single pass. The control strategy includes determining whether a video frame has a complexity level statistically outside a defined range from a complexity level of at least one preceding frame of the sequence of video frames, and if so, determining a new average bit rate target for the video frame. The new average bit rate for the video frame is determined employing at least one of spatial complexity and temporal complexity of the video frame. The new average bit rate target for the video frame is used to set frame level bit rate control parameter(s), and the video frame is encoded using the set frame level bit rate control parameter(s).