Patent ID: 7920631
Filing Date: 2011-04-05
Classification: H04N,Y10S

Abstract:
1. A computer-implemented method comprising: providing compressed data that comprises audio or video data and which has been compressed using a first encoder having an associated first decoder that can be used to uncompress the compressed data, the compressed data having an associated ID tag associated with the first decoder and which was previously removed and replaced with a second ID tag that references at least one second decoder that is different from the first decoder, the associated ID tag having been removed and replaced with the second ID tag without modifying the compressed data; providing the compressed data to said at least one second decoder that is different from the first decoder and which is involved in actually causing the compressed data to be uncompressed; uncompressing the compressed data to provide uncompressed data comprising source data; and operating on the uncompressed data to provide modified uncompressed data, wherein the operating comprises adding new data to the source data, wherein the new data does not comprise content of the source data.