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B-frames.B-frames.Posted May 26, 2010 11:16 UTC (Wed) by cortana (subscriber, #24596)In reply to: B-frames. by eru Parent article: Swift and predictable reactions to WebM
B-frames may have been present in MPEG-1, but that does not mean the patents have expired, in every country, and that there are no other patents that continue the earlier patents, or that are worded differently enough to be considered separate patents, and hence filed later, but similarly enough to still cover the same subject matter.
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