diff --git a/Libraries/LibMedia/CodedFrame.h b/Libraries/LibMedia/CodedFrame.h
index 7f6436ed45..9aa6d655c5 100644
--- a/Libraries/LibMedia/CodedFrame.h
+++ b/Libraries/LibMedia/CodedFrame.h
@@ -18,8 +18,9 @@ class CodedFrame final {
 public:
     using AuxiliaryData = Variant<CodedVideoFrameData, CodedAudioFrameData>;
 
-    CodedFrame(AK::Duration timestamp, FrameFlags flags, ByteBuffer&& data, AuxiliaryData auxiliary_data)
+    CodedFrame(AK::Duration timestamp, AK::Duration duration, FrameFlags flags, ByteBuffer&& data, AuxiliaryData auxiliary_data)
         : m_timestamp(timestamp)
+        , m_duration(duration)
         , m_flags(flags)
         , m_data(move(data))
         , m_auxiliary_data(auxiliary_data)
@@ -27,6 +28,7 @@ public:
     }
 
     AK::Duration timestamp() const { return m_timestamp; }
+    AK::Duration duration() const { return m_duration; }
     FrameFlags flags() const { return m_flags; }
     bool is_keyframe() const { return has_flag(m_flags, FrameFlags::Keyframe); }
     ByteBuffer const& data() const { return m_data; }
@@ -34,6 +36,7 @@ public:
 
 private:
     AK::Duration m_timestamp;
+    AK::Duration m_duration;
     FrameFlags m_flags;
     ByteBuffer m_data;
     AuxiliaryData m_auxiliary_data;
diff --git a/Libraries/LibMedia/Containers/Matroska/MatroskaDemuxer.cpp b/Libraries/LibMedia/Containers/Matroska/MatroskaDemuxer.cpp
index b8c75e1cba..458d3b2093 100644
--- a/Libraries/LibMedia/Containers/Matroska/MatroskaDemuxer.cpp
+++ b/Libraries/LibMedia/Containers/Matroska/MatroskaDemuxer.cpp
@@ -165,6 +165,10 @@ DecoderErrorOr<CodedFrame> MatroskaDemuxer::get_next_sample_for_track(Track cons
         status.frame_index = 0;
     }
 
+    VERIFY(status.block.has_value());
+
+    auto timestamp = status.block->timestamp();
+    auto duration = status.block->duration().value_or(AK::Duration::zero());
     auto flags = status.block->only_keyframes() ? FrameFlags::Keyframe : FrameFlags::None;
     auto aux_data = [&] -> CodedFrame::AuxiliaryData {
         if (track.type() == TrackType::Video) {
@@ -176,7 +180,7 @@ DecoderErrorOr<CodedFrame> MatroskaDemuxer::get_next_sample_for_track(Track cons
         VERIFY_NOT_REACHED();
     }();
     auto sample_data = DECODER_TRY_ALLOC(ByteBuffer::copy(status.block->frame(status.frame_index++)));
-    return CodedFrame(status.block->timestamp(), flags, move(sample_data), aux_data);
+    return CodedFrame(timestamp, duration, flags, move(sample_data), aux_data);
 }
 
 DecoderErrorOr<AK::Duration> MatroskaDemuxer::total_duration()
diff --git a/Libraries/LibMedia/FFmpeg/FFmpegDemuxer.cpp b/Libraries/LibMedia/FFmpeg/FFmpegDemuxer.cpp
index 62debd9e14..82404c0abc 100644
--- a/Libraries/LibMedia/FFmpeg/FFmpegDemuxer.cpp
+++ b/Libraries/LibMedia/FFmpeg/FFmpegDemuxer.cpp
@@ -253,6 +253,7 @@ DecoderErrorOr<CodedFrame> FFmpegDemuxer::get_next_sample_for_track(Track const&
         auto flags = (packet.flags & AV_PKT_FLAG_KEY) != 0 ? FrameFlags::Keyframe : FrameFlags::None;
         auto sample = CodedFrame(
             time_units_to_duration(packet.pts, stream.time_base),
+            time_units_to_duration(packet.duration, stream.time_base),
             flags,
             move(packet_data),
             auxiliary_data);