What does Group of pictures mean?
A group of pictures, or GOP, is an organised sequence of coded pictures with a reference structure. Its design affects compression efficiency, random access and aspects of startup or seeking behaviour.
Why it matters
A GOP can include pictures with different prediction relationships rather than a set of equally independent images. Exact terminology and access behaviour depend on the codec. Longer temporal structures can improve efficiency in some contexts but may change how easily a decoder joins or recovers. Viewers usually cannot choose the source encoder’s GOP from an ordinary playback menu.
A practical example
If a player waits briefly after a channel change but then remains smooth, encoding structure may be one contributing factor. Report the observed delay and stream details instead of assuming a buffer slider directly controls the source GOP or that every startup wait proves slow internet.
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Related terminology: Google Cast, Group stage.
For practical setup and troubleshooting, browse the journal or support guides.