2012/2/19 Martin Storsjö <[email protected]>
> On Sun, 19 Feb 2012, Yusuke Nakamura wrote: > > sample_depends_on = 2 doesn't mean random accessible point (e.g. H.264 >> stream can contain non-RAP I-pictures). >> > > Hmm, the spec says "2: this sample does not depend on others (I picture);" > - doesn't that imply that it is randomly accessible as it doesn't depend on > anything else? > > Let's say I is IDR-picture, i is non-IDR I-picture and P is P-picture, and consider a coded video sequence I[0]P[1]i[2]P[3] . Here, P[3] depends on P[1] and P[1] depends on I[0]. Then if you start to decode i[2], P[3] cannot be decodable correctly. Therefore, i[2] can have sample_depends_on=2 but is not random accessible sample.
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