Editing system, editing controlling apparatus, and editing controlling method
First Claim
1. An editing apparatus, comprising:
- first decoding means for decoding a first encoded bit stream to generate a first base band signal;
first acquiring means for acquiring a first codec information used to generate the first base band signal;
second decoding means for decoding a second encoded bit stream to generate a second base band signal;
second acquiring means for acquiring a second codec information used to generate the second base band signal;
edit point detecting means for detecting an edit point in a third base band signal, by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal, wherein the third base band signal is obtained by connecting the first and second base band signals at the edit point;
selecting means for selecting which of the first and second codec information is used for re-encoding the third base band signal according to the detected edit point;
re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and
controlling means for controlling said re-encoding means to re-use the codec information selected by the selecting means to re-encode the third base band signal.
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Abstract
A splicer/transcoder device that interfaces with a material archiver/server using a stream. The splicer/transcoder device interfaces with an editor and switcher using a base band signal. In a predetermined region including at least an edit point, a transcoding process is performed. In an input stream, two programs to be edited have been multiplexed. The editor and switcher receives base band signals Sa and Sb of which respective programs have been encoded. As with a conventional editing device, the editor and switcher edits the base band signals and returns the edited result as a base band signal Sc to the splicer/transcoder device. The splicer/transcoder device re-encodes the base band signal Sc into an output stream using codec information obtained in the decoding process.
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Citations
16 Claims
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1. An editing apparatus, comprising:
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first decoding means for decoding a first encoded bit stream to generate a first base band signal; first acquiring means for acquiring a first codec information used to generate the first base band signal; second decoding means for decoding a second encoded bit stream to generate a second base band signal; second acquiring means for acquiring a second codec information used to generate the second base band signal; edit point detecting means for detecting an edit point in a third base band signal, by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal, wherein the third base band signal is obtained by connecting the first and second base band signals at the edit point; selecting means for selecting which of the first and second codec information is used for re-encoding the third base band signal according to the detected edit point; re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and controlling means for controlling said re-encoding means to re-use the codec information selected by the selecting means to re-encode the third base band signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An editing method, comprising the steps of:
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decoding a first encoded bit stream to generate a first base band signal and a second encoded bit stream to generate a second base band signal; acquiring first and second codec information used to generate the first and second base band signals, respectively; detecting an edit point in a third base band signal by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal, wherein the third base band signal is obtained by connecting the first and second base band signals at the edit point; selecting which of the first and second codec information is used for re-encoding the third base band signal according to the detected edit point; re-encoding the third base band signal to generate a third encoded bit stream; and controlling the re-encoding step to re-use the codec information selected by the selecting step to re-encode the third base band signal.
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13. An editing apparatus, comprising:
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decoding means for obtaining a first base band signal and a second base band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; acquiring means for acquiring first and second codec information used to obtain the first and second base band signals, respectively; edit point detecting means for detecting an edit point in a third base band signal by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal, wherein the third base band signal obtained by connecting the first and second base band signals at the edit point; selecting means for selecting which of the first and second codec information is used for re-encoding the third base band signal according to the detected edit point; re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and controlling means for controlling said re-encoding means to re-use the codec information selected by the selecting means to re-encode the third base band signal.
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14. An editing method, comprising the steps of:
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decoding a first encoded bit stream to generate a first base band signal; acquiring a first codec information used to generate the first base band signal; decoding a second encoded bit stream to generate a second base band signal; acquiring a second codec information used to generate the second base band signal; detecting an edit point in a third base band signal by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal, wherein the third base band signal obtained by connecting the first and second base band signals at the edit point; selecting which of the first and second codec information is reused for re-encoding the third base band signal according to the detected edit point; re-encoding the third base band signal to generate a third encoded bit stream; and controlling the re-encoding step to re-use the codec information selected by the selecting step to re-encode the third base band signal.
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15. A re-encoding apparatus, comprising:
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re-encoding means for re-encoding a third base band signal, obtained by connecting a first base band signal generated by decoding a first encoded bit stream and a second base band signal generated by decoding a second encoded bit stream at a predetermined edit position, to generate a third encoded bit stream; acquiring means for acquiring first and second codec information used to generate the first and second base band signals, respectively; edit point detecting means for detecting the predetermined edit point in the third base band signal by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal; selecting means for selecting which of the first and second codec information is used for re-coding the third base band signal according to the predetermined edit point; controlling means for controlling said re-encoding means to re-use the codec information selected by the selecting means to re-encode the third base band signal.
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16. A re-encoding method, comprising the steps of:
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re-encoding a third base band signal, obtained by connecting a first base band signal generated by decoding a first encoded bit stream and a second base band signal generated by decoding a second encoded bit stream at a predetermined edit position, to generate a third encoded bit stream; acquiring first and second codec information used to generate the first and second base band signals, respectively; detecting the predetermined edit point in the third base band signal by comparing pixels of the first and second base band signals with pixels of the third base band signal on a picture basis to determine whether the third base band signal matches the first or second base band signal; selecting which of the first and second codec information is used for re-coding the third base band signal according to the predetermined edit position; and controlling the re-encoding step to selectively re-use the codec information selected to re-encode the third base band signal.
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Specification