Merge "mpeg2ts: report estimated duration only when stabilized"

                        - mSeekSyncPoints->keyAt(0);

                off64_t diffOffset = mSeekSyncPoints->valueAt(prevSyncSize - 1)

                        - mSeekSyncPoints->valueAt(0);

                durationUs = size * diffUs / diffOffset;

                durations.push_back(durationUs);

                int64_t currentDurationUs = size * diffUs / diffOffset;

                durations.push_back(currentDurationUs);

                if (durations.size() > 5) {

                    durations.erase(durations.begin());

                    int64_t min = *durations.begin();

                    int64_t max = *durations.begin();

                    for (List<int64_t>::iterator i = durations.begin();

                            i != durations.end();

                            ++i) {

                        if (min > *i) {

                            min = *i;

                    for (auto duration : durations) {

                        if (min > duration) {

                            min = duration;

                        }

                        if (max < *i) {

                            max = *i;

                        if (max < duration) {

                            max = duration;

                        }

                    }

                    if (max - min < 500 * 1000) {

                        durationUs = currentDurationUs;

                        break;

                    }

                }