st->codecpar->sample_rate = avio_rb32(pb) / 8;
avio_skip(pb, 4);
st->codecpar->channels = avio_r8(pb) & 0xF;
- st->codecpar->bit_rate = st->codecpar->channels * st->codecpar->sample_rate * 8LL;
+ st->codecpar->bit_rate = (int64_t)st->codecpar->channels * st->codecpar->sample_rate * 8LL;
if (!st->codecpar->channels)
return AVERROR_INVALIDDATA;