发明名称 |
SPLICING OF VIDEO DATA IN PROGRESSIVELY REFRESHED VIDEO STREAMS |
摘要 |
A method is provided for replacing compressed video from a first source with video from a second source at a predefined insertion point in a video data stream. If the video from the second source is progressively refreshed video, it is decompressed sufficiently prior to the insertion point to enable the recovery and recompression of a first video frame (in encoding order) from the second source to be inserted at the insertion point. The recovered first video frame is then recompressed as an intra-coded (I) frame. The insertion of the video from the second source is then commenced at the insertion point using the I frame. The insertion point can, for example, indicate the commencement of a commercial break in the video stream, in which case the second source provides a commercial for insertion into the commercial break. Where the commercial is stored in memory, it can be stored with the first frame thereof (in encoding order) as an I frame. |
申请公布号 |
CA2286448(A1) |
申请公布日期 |
2000.05.20 |
申请号 |
CA19992286448 |
申请日期 |
1999.10.18 |
申请人 |
GENERAL INSTRUMENT CORPORATION |
发明人 |
KELLEY, KEITH J.;LUTHRA, AJAY;WANG, LIMIN |
分类号 |
H04N7/24;H04N7/26;H04N7/50;H04N21/234;H04N21/2343;H04N21/262;H04N21/44;H04N21/81;H04N21/845;(IPC1-7):H04N5/262 |
主分类号 |
H04N7/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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