Method and apparatus for generating thumbnail file
First Claim
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1. A method for generating a thumbnail file, comprising:
- receiving a command;
obtaining time information corresponding to the command and a frame to be output;
adjusting the frame to be output to a predetermined resolution according to a resolution of the frame to be output to generate a thumbnail; and
generating the thumbnail file according to the time information and the thumbnail, the thumbnail file containing the thumbnail, a corresponding timestamp and a corresponding presentation timestamp,wherein the time information comprises the timestamp and the presentation timestamp corresponding to the command, and wherein a minimum unit of the presentation timestamp is less than one second and a minimum unit of the timestamp is one second, andwherein the step of obtaining the time information corresponding to the command and the frame to be output comprises;
demultiplexing an encoded data to generate a specific demultiplexed result, and retrieving the timestamp from the specific demultiplexed result; and
decoding the specific demultiplexed result to generate a specific decoded data, and retrieving the presentation timestamp from the specific decoded data.
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Abstract
A method for generation a thumbnail file is provided. The method includes: receiving a command; obtaining time information corresponding to the command and a frame to be output; adjusting the frame to be output to a predetermined resolution according to a resolution of the frame to be output to generate a thumbnail; and generating the thumbnail file according to the time information and the thumbnail.
11 Citations
5 Claims
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1. A method for generating a thumbnail file, comprising:
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receiving a command; obtaining time information corresponding to the command and a frame to be output; adjusting the frame to be output to a predetermined resolution according to a resolution of the frame to be output to generate a thumbnail; and generating the thumbnail file according to the time information and the thumbnail, the thumbnail file containing the thumbnail, a corresponding timestamp and a corresponding presentation timestamp, wherein the time information comprises the timestamp and the presentation timestamp corresponding to the command, and wherein a minimum unit of the presentation timestamp is less than one second and a minimum unit of the timestamp is one second, and wherein the step of obtaining the time information corresponding to the command and the frame to be output comprises; demultiplexing an encoded data to generate a specific demultiplexed result, and retrieving the timestamp from the specific demultiplexed result; and decoding the specific demultiplexed result to generate a specific decoded data, and retrieving the presentation timestamp from the specific decoded data. - View Dependent Claims (2)
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3. An apparatus for generating a thumbnail file, comprising:
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a reception unit, for receiving a command; an extraction unit, for obtaining a frame to be output according to the command; a processing circuit, for adjusting the frame to be output to a predetermined resolution according to a resolution of the frame to be output to generate a thumbnail; a thumbnail file generation unit, for obtaining time information according to the command and generating the thumbnail file according to the time information and the thumbnail, the thumbnail file containing the thumbnail, a corresponding timestamp and a corresponding presentation timestamp, wherein the time information comprises the timestamp and the presentation timestamp corresponding to the command, and wherein a minimum unit of the presentation timestamp is less than one second and a minimum unit of the timestamp is one second; a demultiplexing unit, for demultiplexing an encoded data to generate a plurality of demultiplexed results comprising a specific demultiplexed result, wherein the demultiplexed results respectively comprise different timestamps; and a decoding unit, for decoding the specific demultiplexed result to generate a plurality of decoded data comprising a specific decoded data, wherein the decoded data respectively comprise different presentation timestamps; wherein, the thumbnail file generation unit retrieves the timestamp corresponding to the command from the specific demultiplexed result, and retrieves the presentation timestamp corresponding to the command from the specific decoded data. - View Dependent Claims (4)
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5. A playback method based on a thumbnail file, comprising:
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receiving a command corresponding to the thumbnail file; obtaining a timestamp and a presentation timestamp contained in the thumbnail file, wherein a minimum unit of the presentation timestamp is less than one second and a minimum unit of the timestamp is one second; obtaining and demultiplexing an encoded data corresponding to the thumbnail file to generate a plurality of demultiplexed results comprising a specific demultiplexed result, and selecting the specific demultiplexed result according to the timestamp, wherein the demultiplexed results respectively comprise different timestamps; decoding the specific demultiplexed result to generate a plurality of decoded data comprising a specific decoded data, and selecting the specific decoded data according to the presentation timestamp, wherein the decoded data respectively comprise different presentation timestamps; and starting playback from the specific decoded data.
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Specification