diff --git a/media/extractors/flac/FLACExtractor.cpp b/media/extractors/flac/FLACExtractor.cpp
index fcfdaff..be6d9fd 100644
--- a/media/extractors/flac/FLACExtractor.cpp
+++ b/media/extractors/flac/FLACExtractor.cpp
@@ -622,6 +622,8 @@
             AMediaFormat_setInt32(mTrackMetadata,
                     AMEDIAFORMAT_KEY_SAMPLE_RATE, getSampleRate());
             AMediaFormat_setInt32(mTrackMetadata,
+                    AMEDIAFORMAT_KEY_BITS_PER_SAMPLE, getBitsPerSample());
+            AMediaFormat_setInt32(mTrackMetadata,
                     AMEDIAFORMAT_KEY_PCM_ENCODING, kAudioEncodingPcm16bit);
             // sample rate is non-zero, so division by zero not possible
             AMediaFormat_setInt64(mTrackMetadata,
diff --git a/media/extractors/wav/WAVExtractor.cpp b/media/extractors/wav/WAVExtractor.cpp
index 9a329f1..ddc7031 100644
--- a/media/extractors/wav/WAVExtractor.cpp
+++ b/media/extractors/wav/WAVExtractor.cpp
@@ -311,6 +311,7 @@
                 AMediaFormat_setInt32(mTrackMeta, AMEDIAFORMAT_KEY_CHANNEL_COUNT, mNumChannels);
                 AMediaFormat_setInt32(mTrackMeta, AMEDIAFORMAT_KEY_CHANNEL_MASK, mChannelMask);
                 AMediaFormat_setInt32(mTrackMeta, AMEDIAFORMAT_KEY_SAMPLE_RATE, mSampleRate);
+                AMediaFormat_setInt32(mTrackMeta, AMEDIAFORMAT_KEY_BITS_PER_SAMPLE, mBitsPerSample);
                 AMediaFormat_setInt32(mTrackMeta, AMEDIAFORMAT_KEY_PCM_ENCODING,
                         kAudioEncodingPcm16bit);
 
diff --git a/media/libstagefright/Utils.cpp b/media/libstagefright/Utils.cpp
index 53258ad..96993e9 100644
--- a/media/libstagefright/Utils.cpp
+++ b/media/libstagefright/Utils.cpp
@@ -787,6 +787,11 @@
         msg->setInt32("channel-count", numChannels);
         msg->setInt32("sample-rate", sampleRate);
 
+        int32_t bitsPerSample;
+        if (meta->findInt32(kKeyBitsPerSample, &bitsPerSample)) {
+            msg->setInt32("bits-per-sample", bitsPerSample);
+        }
+
         int32_t channelMask;
         if (meta->findInt32(kKeyChannelMask, &channelMask)) {
             msg->setInt32("channel-mask", channelMask);
@@ -1526,6 +1531,10 @@
         if (msg->findInt32("sample-rate", &sampleRate)) {
             meta->setInt32(kKeySampleRate, sampleRate);
         }
+        int32_t bitsPerSample;
+        if (msg->findInt32("bits-per-sample", &bitsPerSample)) {
+            meta->setInt32(kKeyBitsPerSample, bitsPerSample);
+        }
         int32_t channelMask;
         if (msg->findInt32("channel-mask", &channelMask)) {
             meta->setInt32(kKeyChannelMask, channelMask);
diff --git a/media/ndk/NdkMediaFormat.cpp b/media/ndk/NdkMediaFormat.cpp
index b95dcd0..6537ad1 100644
--- a/media/ndk/NdkMediaFormat.cpp
+++ b/media/ndk/NdkMediaFormat.cpp
@@ -276,6 +276,7 @@
 EXPORT const char* AMEDIAFORMAT_KEY_AUTHOR = "author";
 EXPORT const char* AMEDIAFORMAT_KEY_BITRATE_MODE = "bitrate-mode";
 EXPORT const char* AMEDIAFORMAT_KEY_BIT_RATE = "bitrate";
+EXPORT const char* AMEDIAFORMAT_KEY_BITS_PER_SAMPLE = "bits-per-sample";
 EXPORT const char* AMEDIAFORMAT_KEY_CAPTURE_RATE = "capture-rate";
 EXPORT const char* AMEDIAFORMAT_KEY_CDTRACKNUMBER = "cdtracknum";
 EXPORT const char* AMEDIAFORMAT_KEY_CHANNEL_COUNT = "channel-count";
diff --git a/media/ndk/include/media/NdkMediaFormat.h b/media/ndk/include/media/NdkMediaFormat.h
index b8047d9..3a3268c 100644
--- a/media/ndk/include/media/NdkMediaFormat.h
+++ b/media/ndk/include/media/NdkMediaFormat.h
@@ -181,6 +181,7 @@
 extern const char* AMEDIAFORMAT_KEY_ALBUMARTIST __INTRODUCED_IN(29);
 extern const char* AMEDIAFORMAT_KEY_ARTIST __INTRODUCED_IN(29);
 extern const char* AMEDIAFORMAT_KEY_AUTHOR __INTRODUCED_IN(29);
+extern const char* AMEDIAFORMAT_KEY_BITS_PER_SAMPLE __INTRODUCED_IN(29);
 extern const char* AMEDIAFORMAT_KEY_CDTRACKNUMBER __INTRODUCED_IN(29);
 extern const char* AMEDIAFORMAT_KEY_COLOR_RANGE __INTRODUCED_IN(29);
 extern const char* AMEDIAFORMAT_KEY_COLOR_STANDARD __INTRODUCED_IN(29);