[libavcodec/dv.c:976]: Array index out of bounds

[dvice_null@…]

[libavcodec/dv.c:976]: Array index out of bounds

In this line:

pb = dv_encode_ac(&enc_blks[j], pb, &pbs[6*5]);

pbs[] was initialized to size [5*6] so you are accessing one element over the limits of the array.

[reimar]

That code is part of FFmpeg, not MPlayer, so you would have to report there.
Anyway the analysis is wrong, no element is accessed by the quoted code, it only calculates a pointer to the element after the last, to be used in later bounds checks, which is allowed by C.