Video converter and computer program for executing said video converter
AssigneeHitachi, Ltd.
InventorsYasuhiro Akiyama, Junichi Kimura, Muneaki Yamaguchi
Life of this patent
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Abstract
A video converter for converting a coding format of a great deal of video contents has three kinds of conversion modes including a conversion mode for performing conversion in two steps in accordance with the kinds of input pictures so that a converting operation can be completed within a limit time set in advance.
Claims13
A re-encoding method in which data constituted by various kinds of pictures encoded by a first encoding method is re-encoded by a second encoding method, said re-encoding method including the steps of:
- acquiring encoded data constituted by said various kinds of pictures;
- receiving conversion time from input means;
- selecting one of a plurality of re-encoding modes in accordance with the conversion time;
- re-encoding said encoded data in the selected mode;
- and
- storing said re-encoded data in storage means,
- wherein said plurality of re-encoding modes includes a first mode, a second mode, and a third mode,
- wherein said first mode extracts/decodes a predetermined kind of pictures from said various kinds of pictures and applies said second encoding method to said predetermined kind of pictures,
- wherein said second mode applies said second encoding method to pictures other than said extracted predetermined kind of pictures after said predetermined kind of pictures are encoded, and
- wherein said third mode applies said second encoding method to said acquired encoded data in acquiring order.
A re-encoding system for re-encoding data constituted by various kinds of pictures by a second encoding method, comprising:
- a unit for acquiring encoded data constituted by various kinds of pictures encoded by a first encoding method;
- input unit for receiving input of conversion time of said encoded data;
- a unit for selecting one of a plurality of re-encoding modes in accordance with said conversion time;
- a unit for re-encoding said encoded data in said selected mode;
- and
- a unit for outputting said re-encoded data,
- wherein said plurality of re-encoding modes includes a first mode, a second mode, and a third mode,
- wherein said a first mode extracts/decodes a first kind of pictures from said various kinds of pictures and applies said second encoding method to said first kind of pictures,
- wherein said a second mode applies said second encoding method to pictures other than said first kind of pictures after said first kind of pictures are re-encoded,
- wherein said a third mode applies said second encoding method to said acquired encoded data in acquiring order, and
- wherein said second mode is executed by referring to second picture information generated in said first mode, so that said unit for outputting said re-encoded data also outputs said second picture information.
Dependencies are inferred from the claim text.