Don't drop a late frame which may lead to missing I frames in the MP4 file
Change-Id: I8fef1454264230c1369561670236eb0a19ae4e76
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
index 0d0a998..568037e 100644
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -1524,10 +1524,24 @@
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
}
}
