Video server, video editing system, and method for recording and reproducing video data of the video server
First Claim
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1. A video server, comprising:
- a video encoder which encodes input video data at a variable bit rate to output the encoded data;
a rate control unit which controls the bit rate and also outputs rate information showing the bit rate;
a recording unit which records the encoded data and the rate information on a recording medium;
a reproduction unit which reproduces the encoded data recorded on the recording medium at a variable reproduction speed to output the reproduced encoded data, and reproduces the rate information recorded on the recording medium to output the reproduced rate information;
a video decoder which reproduces the reproduced encoded data to output reproduced video data; and
a reproduction control unit which controls the reproduction speed in accordance with the reproduction rate information so that higher the bit rate is, the lower the reproduction speed becomes,wherein the reproduction control unit controls the reproduction speed so as to lower the reproduction speed regardless of the bit rate when a prescribed object exists in a video.
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Abstract
In a video server, rate information showing a bit rate in encoding input video data from a recording line is stores on a recording medium together with encoded data, and a reproduction speed is controlled in accordance with the rate information so that the higher the bit rate is in preview-reproducing, the lower the reproduction speed becomes.
32 Citations
16 Claims
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1. A video server, comprising:
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a video encoder which encodes input video data at a variable bit rate to output the encoded data; a rate control unit which controls the bit rate and also outputs rate information showing the bit rate; a recording unit which records the encoded data and the rate information on a recording medium; a reproduction unit which reproduces the encoded data recorded on the recording medium at a variable reproduction speed to output the reproduced encoded data, and reproduces the rate information recorded on the recording medium to output the reproduced rate information; a video decoder which reproduces the reproduced encoded data to output reproduced video data; and a reproduction control unit which controls the reproduction speed in accordance with the reproduction rate information so that higher the bit rate is, the lower the reproduction speed becomes, wherein the reproduction control unit controls the reproduction speed so as to lower the reproduction speed regardless of the bit rate when a prescribed object exists in a video. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A video server, comprising:
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a video encoder which encodes input video data at a variable bit rate to output the encoded data; a rate control unit which controls the bit rate and also stores rate information showing the bit rate in a database; a recording unit which records the encoded data on a recording medium; a reproduction unit which reproduces the encoded data recorded on the recording medium at a variable reproduction speed to output the reproduced encoded data; a video decoder which reproduces the reproduced encoded data to output reproduced video data; and a reproduction control unit which controls the reproduction speed in accordance with the reproduction rate information so that the higher the bit rate is, the lower the reproduction speed becomes, wherein the reproduction control unit controls the reproduction speed so as to lower the reproduction speed regardless of the bit rate when a prescribed object exists in a video. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for recording and reproducing video data of a video server, comprising:
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encoding input video data at a variable bit rate; recording the encoded data and rata information showing a bit rate in the encoding on a recording medium; reproducing the encoded data recorded on the recording medium at a variable reproduction speed to output the reproduced encoded data; reproducing the rate information recorded on the recording medium to output the reproduced rate information; decoding the reproduced encoded data to output the reproduced video data; and controlling the reproduction speed in accordance with the reproduction rate information so that the higher the bit rate is, the lower the reproduction speed becomes, wherein the reproduction speed is controlled so as to lower the reproduction speed regardless of the bit rate when a prescribed object exists in a video.
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16. A method for recording and reproducing video data of a video server, comprising:
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encoding input video data at a variable bit rate; recording the encoded data on a recording medium; storing rate information showing a bit rate in the encoding in a database and reproducing the encoded data recorded on the recording medium at a variable reproduction speed to out put the reproduced encoded data; decoding the reproduced encoded data to output the reproduced video data; controlling the reproduction speed in accordance with the rate information stored in the database so that the higher the bit rate is, the lower the reproduction speed becomes, wherein the reproduction speed is controlled so as to lower the reproduction speed regardless of the bit rate when a prescribed object exists in a video.
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Specification