摘要:
Disclosed are a moving-picture compression encoding apparatus comprising a motion-compensated predicting unit that includes a first cost calculator for generating cost values based upon difference information indicative of differences between prediction signals generated by a prediction signal generator and a moving-picture signal input to the moving-picture compression encoding apparatus; a preliminary selector for preliminarily selecting a plurality of blocks based upon the cost values and outputting the blocks to a second cost calculator; the second cost calculator for generating new cost values by applying a frequency conversion to the difference information regarding the block sizes that have been output from the preliminary selector; and a block size selector for selecting an optimum block size based upon the cost values resulting from the frequency conversion.
摘要:
To provide a moving picture transcoding apparatus capable of suppressing deterioration of an image quality and capable of reducing a calculation amount required for transcoding an image, the moving picture transcoding apparatus which transcodes encoded moving picture data includes: a moving picture data producing unit for producing new moving picture data in which a specific frame of the encoded moving picture data is set as a head thereof; and a judging unit for judging whether or not a succeeding frame of the specific frame has been encoded by referring to a frame preceding the specific frame. Further, the moving picture data producing unit includes: a first frame transcoding process unit for transcoding the specific frame to a first frame which does not refer to another frame; and a succeeding frame transcoding process unit for again encoding a succeeding frame, which has been judged by the judging unit to refer to the frame preceding the specific frame, by referring to any one frame in a range from the succeeding frame judged by the judging unit to the specific frame.
摘要:
A delivery system, which distributes at least one stream to a terminal over a network, includes a conversion apparatus that in distributing encoded data of a moving image specified by a terminal, re-uses information of the encoded data to convert the encoded data so that the encoded data converted fits in with at least one of capability information and status of a network notified from the terminal and transmits the encoded data converted to the terminal.
摘要:
Disclosed are a moving-picture compression encoding apparatus comprising a motion-compensated predicting unit that includes a first cost calculator for generating cost values based upon difference information indicative of differences between prediction signals generated by a prediction signal generator and a moving-picture signal input to the moving-picture compression encoding apparatus; a preliminary selector for preliminarily selecting a plurality of blocks based upon the cost values and outputting the blocks to a second cost calculator; the second cost calculator for generating new cost values by applying a frequency conversion to the difference information regarding the block sizes that have been output from the preliminary selector; and a block size selector for selecting an optimum block size based upon the cost values resulting from the frequency conversion.
摘要:
Disclosed is a conversion apparatus including a decoding unit that decodes input encoded data into image data, and a size conversion unit that converts size of the image data based on a size conversion request received from outside and that expands/contracts, or splits/synthesizes motion vector or prediction mode of encoding parameters, received from the decoding unit, based upon a size conversion request, and an encoding unit that encodes image data after size conversion using the prediction mode or motion vector converted and transmits the resulting encoded image data via a transmission buffer to outside.
摘要:
Disclosed is a conversion apparatus including a decoding unit that decodes input encoded data into image data, and a size conversion unit that converts size of the image data based on a size conversion request received from outside and that expands/contracts, or splits/synthesizes motion vector or prediction mode of encoding parameters, received from the decoding unit, based upon a size conversion request, and an encoding unit that encodes image data after size conversion using the prediction mode or motion vector converted and transmits the resulting encoded image data via a transmission buffer to outside.
摘要:
A moving image distribution system of the present invention is a moving image distribution system for distributing one or more streams through a transmission path 104 and a transmission path 105 to a terminal 103, and has a converter configured to posting a predetermined capability information to the terminal 103 side, and receiving at least one stream from a delivery server 801 having streams stored therein, or receiving a plurality of streams from a plurality of delivery servers 801, and converting a syntax of the streams so as to adapt it to the capability information, and the sending them through the transmission path 105 to the terminal 103.
摘要:
Disclosed are an apparatus and method that make possible high-speed mode selection using an evaluation standard of high encoding efficiency in intra prediction. The apparatus includes a first cost calculator for generating cost values from difference information indicative of differences between prediction signals, which have been generated by a prediction signal generator, and a moving picture signal that is input to a moving picture compression encoding apparatus; a preliminary selector for selecting at least two prediction modes based upon the cost values and outputting these prediction modes to a second cost calculator; the second cost calculator for frequency-converting the prediction modes that have been output from the preliminary selector and generating new cost values; and a prediction mode selector for selecting the optimum prediction mode based upon the cost values prevailing after the frequency conversion.
摘要:
A video streaming system includes a streaming server (101) which stores video streams and a transcoding device (102) which receives the video stream desired by a terminal (103), and analyzes the video stream to transcode only a video stream which falls within a range in which transcoding is required, when transmitting the video stream to the terminal (103) upon transcoding it into a video stream which can be transmitted from an arbitrary position designated by the terminal (103). The transcoding device (102) generates a playback start frame by a video transcoder (108) when the video stream reaches a playback start position, and analyzes subsequent frames by using the video transcoder (108). The transcoding device transcodes a video stream only when transcoding is required, while outputting a video stream without any change when transcoding is not required.
摘要:
To provide a moving picture transcoding apparatus capable of suppressing deterioration of an image quality and capable of reducing a calculation amount required for transcoding an image, the moving picture transcoding apparatus which transcodes encoded moving picture data includes: a moving picture data producing unit for producing new moving picture data in which a specific frame of the encoded moving picture data is set as a head thereof; and a judging unit for judging whether or not a succeeding frame of the specific frame has been encoded by referring to a frame preceding the specific frame. Further, the moving picture data producing unit includes: a first frame transcoding process unit for transcoding the specific frame to a first frame which does not refer to another frame; and a succeeding frame transcoding process unit for again encoding a succeeding frame, which has been judged by the judging unit to refer to the frame preceding the specific frame, by referring to any one frame in a range from the succeeding frame judged by the judging unit to the specific frame.