am 0ea4ed3b: Don\'t drop a late frame which may lead to missing I frames in the MP4 file

        CHECK(timestampUs >= 0);

        if (mNumSamples > 1) {

            if (timestampUs <= lastTimestampUs) {

                LOGW("Drop a frame, since it arrives too late!");

                LOGW("Frame arrives too late!");

#if 0

                // Drop the late frame.

                copy->release();

                copy = NULL;

                continue;

#else

                // Don't drop the late frame, since dropping a frame may cause

                // problems later during playback

                // The idea here is to avoid having two or more samples with the

                // same timestamp in the output file.

                if (mTimeScale >= 1000000LL) {

                    timestampUs += 1;

                } else {

                    timestampUs += (1000000LL + (mTimeScale >> 1)) / mTimeScale;

                }

#endif

            }

        }