avpriv_request_sample(s, "Unexpected extradata (%d bytes)",
st->codec->extradata_size);
} else {
- st->codec->extradata_size = 6;
- st->codec->extradata = av_mallocz(6 + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!st->codec->extradata)
+ if (ff_alloc_extradata(st->codec, 6))
return AVERROR(ENOMEM);
+ memset(st->codec->extradata, 0, st->codec->extradata_size);
/* setup extradata with our experimentally obtained value */
st->codec->extradata[4] = 31;
}