diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 8eae3298c2d..6192f63209b 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -55,6 +55,8 @@
         ([#7988](https://github.com/google/ExoPlayer/issues/7988)).
     *   Ignore negative payload size in PES packets
         ([#8005](https://github.com/google/ExoPlayer/issues/8005)).
+    *   Make FLV files seekable by using the key frame index
+        ([#7378](https://github.com/google/ExoPlayer/issues/7378)).
 *   HLS:
     *   Fix crash affecting chunkful preparation of master playlists that start
         with an I-FRAME only variant
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/IndexSeekMap.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/IndexSeekMap.java
new file mode 100644
index 00000000000..44c3ab0184e
--- /dev/null
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/IndexSeekMap.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.exoplayer2.extractor;
+
+import static com.google.android.exoplayer2.util.Assertions.checkArgument;
+
+import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.util.Util;
+
+/**
+ * A {@link SeekMap} implementation based on a mapping between times and positions in the input
+ * stream.
+ */
+public final class IndexSeekMap implements SeekMap {
+
+  private final long[] positions;
+  private final long[] timesUs;
+  private final long durationUs;
+  private final boolean isSeekable;
+
+  /**
+   * Creates an instance.
+   *
+   * @param positions The positions in the stream corresponding to {@code timesUs}, in bytes.
+   * @param timesUs The times corresponding to {@code positions}, in microseconds.
+   * @param durationUs The duration of the input stream, or {@link C#TIME_UNSET} if it is unknown.
+   */
+  public IndexSeekMap(long[] positions, long[] timesUs, long durationUs) {
+    checkArgument(positions.length == timesUs.length);
+    int length = timesUs.length;
+    isSeekable = length > 0;
+    if (isSeekable && timesUs[0] > 0) {
+      // Add (position = 0, timeUs = 0) as first entry.
+      this.positions = new long[length + 1];
+      this.timesUs = new long[length + 1];
+      System.arraycopy(positions, 0, this.positions, 1, length);
+      System.arraycopy(timesUs, 0, this.timesUs, 1, length);
+    } else {
+      this.positions = positions;
+      this.timesUs = timesUs;
+    }
+    this.durationUs = durationUs;
+  }
+
+  @Override
+  public boolean isSeekable() {
+    return isSeekable;
+  }
+
+  @Override
+  public long getDurationUs() {
+    return durationUs;
+  }
+
+  @Override
+  public SeekMap.SeekPoints getSeekPoints(long timeUs) {
+    if (!isSeekable) {
+      return new SeekMap.SeekPoints(SeekPoint.START);
+    }
+    int targetIndex =
+        Util.binarySearchFloor(timesUs, timeUs, /* inclusive= */ true, /* stayInBounds= */ true);
+    SeekPoint leftSeekPoint = new SeekPoint(timesUs[targetIndex], positions[targetIndex]);
+    if (leftSeekPoint.timeUs >= timeUs || targetIndex == timesUs.length - 1) {
+      return new SeekMap.SeekPoints(leftSeekPoint);
+    } else {
+      SeekPoint rightSeekPoint =
+          new SeekPoint(timesUs[targetIndex + 1], positions[targetIndex + 1]);
+      return new SeekMap.SeekPoints(leftSeekPoint, rightSeekPoint);
+    }
+  }
+}
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java
index a90410c02dc..6f9c5b9c40a 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java
@@ -23,6 +23,7 @@
 import com.google.android.exoplayer2.extractor.ExtractorInput;
 import com.google.android.exoplayer2.extractor.ExtractorOutput;
 import com.google.android.exoplayer2.extractor.ExtractorsFactory;
+import com.google.android.exoplayer2.extractor.IndexSeekMap;
 import com.google.android.exoplayer2.extractor.PositionHolder;
 import com.google.android.exoplayer2.extractor.SeekMap;
 import com.google.android.exoplayer2.util.Assertions;
@@ -135,8 +136,12 @@ public void init(ExtractorOutput output) {
 
   @Override
   public void seek(long position, long timeUs) {
-    state = STATE_READING_FLV_HEADER;
-    outputFirstSample = false;
+    if (position == 0) {
+      state = STATE_READING_FLV_HEADER;
+      outputFirstSample = false;
+    } else {
+      state = STATE_READING_TAG_HEADER;
+    }
     bytesToNextTagHeader = 0;
   }
 
@@ -267,7 +272,11 @@ private boolean readTagData(ExtractorInput input) throws IOException {
       wasSampleOutput = metadataReader.consume(prepareTagData(input), timestampUs);
       long durationUs = metadataReader.getDurationUs();
       if (durationUs != C.TIME_UNSET) {
-        extractorOutput.seekMap(new SeekMap.Unseekable(durationUs));
+        extractorOutput.seekMap(
+            new IndexSeekMap(
+                metadataReader.getKeyFrameTagPositions(),
+                metadataReader.getKeyFrameTimesUs(),
+                durationUs));
         outputSeekMap = true;
       }
     } else {
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java
index 54594ed50fc..f0b4efb1063 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java
@@ -22,6 +22,7 @@
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -31,6 +32,9 @@
 
   private static final String NAME_METADATA = "onMetaData";
   private static final String KEY_DURATION = "duration";
+  private static final String KEY_KEY_FRAMES = "keyframes";
+  private static final String KEY_FILE_POSITIONS = "filepositions";
+  private static final String KEY_TIMES = "times";
 
   // AMF object types
   private static final int AMF_TYPE_NUMBER = 0;
@@ -43,16 +47,28 @@
   private static final int AMF_TYPE_DATE = 11;
 
   private long durationUs;
+  private long[] keyFrameTimesUs;
+  private long[] keyFrameTagPositions;
 
   public ScriptTagPayloadReader() {
     super(new DummyTrackOutput());
     durationUs = C.TIME_UNSET;
+    keyFrameTimesUs = new long[0];
+    keyFrameTagPositions = new long[0];
   }
 
   public long getDurationUs() {
     return durationUs;
   }
 
+  public long[] getKeyFrameTimesUs() {
+    return keyFrameTimesUs;
+  }
+
+  public long[] getKeyFrameTagPositions() {
+    return keyFrameTagPositions;
+  }
+
   @Override
   public void seek() {
     // Do nothing.
@@ -80,14 +96,41 @@ protected boolean parsePayload(ParsableByteArray data, long timeUs) {
       // We're not interested in this metadata.
       return false;
     }
-    // Set the duration to the value contained in the metadata, if present.
     Map<String, Object> metadata = readAmfEcmaArray(data);
-    if (metadata.containsKey(KEY_DURATION)) {
-      double durationSeconds = (double) metadata.get(KEY_DURATION);
+    // Set the duration to the value contained in the metadata, if present.
+    @Nullable Object durationSecondsObj = metadata.get(KEY_DURATION);
+    if (durationSecondsObj instanceof Double) {
+      double durationSeconds = (double) durationSecondsObj;
       if (durationSeconds > 0.0) {
         durationUs = (long) (durationSeconds * C.MICROS_PER_SECOND);
       }
     }
+    // Set the key frame times and positions to the value contained in the metadata, if present.
+    @Nullable Object keyFramesObj = metadata.get(KEY_KEY_FRAMES);
+    if (keyFramesObj instanceof Map) {
+      Map<?, ?> keyFrames = (Map<?, ?>) keyFramesObj;
+      @Nullable Object positionsObj = keyFrames.get(KEY_FILE_POSITIONS);
+      @Nullable Object timesSecondsObj = keyFrames.get(KEY_TIMES);
+      if (positionsObj instanceof List && timesSecondsObj instanceof List) {
+        List<?> positions = (List<?>) positionsObj;
+        List<?> timesSeconds = (List<?>) timesSecondsObj;
+        int keyFrameCount = timesSeconds.size();
+        keyFrameTimesUs = new long[keyFrameCount];
+        keyFrameTagPositions = new long[keyFrameCount];
+        for (int i = 0; i < keyFrameCount; i++) {
+          Object positionObj = positions.get(i);
+          Object timeSecondsObj = timesSeconds.get(i);
+          if (timeSecondsObj instanceof Double && positionObj instanceof Double) {
+            keyFrameTimesUs[i] = (long) (((Double) timeSecondsObj) * C.MICROS_PER_SECOND);
+            keyFrameTagPositions[i] = ((Double) positionObj).longValue();
+          } else {
+            keyFrameTimesUs = new long[0];
+            keyFrameTagPositions = new long[0];
+            break;
+          }
+        }
+      }
+    }
     return false;
   }
 
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/IndexSeeker.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/IndexSeeker.java
index f8c63ff8e26..4b9d2e46e81 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/IndexSeeker.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/IndexSeeker.java
@@ -70,7 +70,7 @@ public SeekPoints getSeekPoints(long timeUs) {
     int targetIndex =
         Util.binarySearchFloor(timesUs, timeUs, /* inclusive= */ true, /* stayInBounds= */ true);
     SeekPoint seekPoint = new SeekPoint(timesUs.get(targetIndex), positions.get(targetIndex));
-    if (seekPoint.timeUs >= timeUs || targetIndex == timesUs.size() - 1) {
+    if (seekPoint.timeUs == timeUs || targetIndex == timesUs.size() - 1) {
       return new SeekPoints(seekPoint);
     } else {
       SeekPoint nextSeekPoint =
diff --git a/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorSeekTest.java b/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorSeekTest.java
new file mode 100644
index 00000000000..e03b7ec6d69
--- /dev/null
+++ b/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorSeekTest.java
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.android.exoplayer2.extractor.flv;
+
+import static com.google.android.exoplayer2.testutil.TestUtil.extractAllSamplesFromFile;
+import static com.google.common.truth.Truth.assertThat;
+
+import android.net.Uri;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.extractor.SeekMap;
+import com.google.android.exoplayer2.testutil.FakeExtractorOutput;
+import com.google.android.exoplayer2.testutil.FakeTrackOutput;
+import com.google.android.exoplayer2.testutil.TestUtil;
+import com.google.android.exoplayer2.upstream.DefaultDataSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
+import com.google.android.exoplayer2.util.Util;
+import java.io.IOException;
+import java.util.List;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Seeking tests for {@link FlvExtractor}. */
+@RunWith(AndroidJUnit4.class)
+public class FlvExtractorSeekTest {
+
+  private static final String TEST_FILE_KEY_FRAME_INDEX =
+      "media/flv/sample-with-key-frame-index.flv";
+  private static final long DURATION_US = 3_042_000;
+  private static final long KEY_FRAMES_INTERVAL_US = C.MICROS_PER_SECOND;
+
+  private FlvExtractor extractor;
+  private FakeExtractorOutput extractorOutput;
+  private DefaultDataSource dataSource;
+
+  @Before
+  public void setUp() throws Exception {
+    extractor = new FlvExtractor();
+    extractorOutput = new FakeExtractorOutput();
+    dataSource =
+        new DefaultDataSourceFactory(ApplicationProvider.getApplicationContext())
+            .createDataSource();
+  }
+
+  @Test
+  public void flvExtractorReads_returnsSeekableSeekMap() throws Exception {
+    Uri fileUri = TestUtil.buildAssetUri(TEST_FILE_KEY_FRAME_INDEX);
+
+    SeekMap seekMap = TestUtil.extractSeekMap(extractor, extractorOutput, dataSource, fileUri);
+
+    assertThat(seekMap.getDurationUs()).isEqualTo(DURATION_US);
+    assertThat(seekMap.isSeekable()).isTrue();
+  }
+
+  @Test
+  public void seeking_handlesSeekToZero() throws Exception {
+    String fileName = TEST_FILE_KEY_FRAME_INDEX;
+    Uri fileUri = TestUtil.buildAssetUri(fileName);
+    SeekMap seekMap = TestUtil.extractSeekMap(extractor, extractorOutput, dataSource, fileUri);
+    int trackId = extractorOutput.trackOutputs.keyAt(0);
+    FakeTrackOutput trackOutput = extractorOutput.trackOutputs.get(trackId);
+
+    long targetSeekTimeUs = 0;
+    int extractedFrameIndex =
+        TestUtil.seekToTimeUs(
+            extractor, seekMap, targetSeekTimeUs, dataSource, trackOutput, fileUri);
+
+    assertThat(extractedFrameIndex).isNotEqualTo(C.INDEX_UNSET);
+    assertFirstFrameAfterSeekIsWithinKeyFrameInterval(
+        fileName, trackId, trackOutput, extractedFrameIndex, targetSeekTimeUs);
+  }
+
+  @Test
+  public void seeking_handlesSeekToEof() throws Exception {
+    String fileName = TEST_FILE_KEY_FRAME_INDEX;
+    Uri fileUri = TestUtil.buildAssetUri(fileName);
+    SeekMap seekMap = TestUtil.extractSeekMap(extractor, extractorOutput, dataSource, fileUri);
+    int trackId = extractorOutput.trackOutputs.keyAt(0);
+    FakeTrackOutput trackOutput = extractorOutput.trackOutputs.get(trackId);
+
+    long targetSeekTimeUs = seekMap.getDurationUs();
+    int extractedFrameIndex =
+        TestUtil.seekToTimeUs(
+            extractor, seekMap, targetSeekTimeUs, dataSource, trackOutput, fileUri);
+
+    assertThat(extractedFrameIndex).isNotEqualTo(C.INDEX_UNSET);
+    assertFirstFrameAfterSeekIsWithinKeyFrameInterval(
+        fileName, trackId, trackOutput, extractedFrameIndex, targetSeekTimeUs);
+  }
+
+  @Test
+  public void seeking_handlesSeekingBackward() throws Exception {
+    String fileName = TEST_FILE_KEY_FRAME_INDEX;
+    Uri fileUri = TestUtil.buildAssetUri(fileName);
+    SeekMap seekMap = TestUtil.extractSeekMap(extractor, extractorOutput, dataSource, fileUri);
+    int trackId = extractorOutput.trackOutputs.keyAt(0);
+    FakeTrackOutput trackOutput = extractorOutput.trackOutputs.get(trackId);
+
+    long firstSeekTimeUs = seekMap.getDurationUs() * 2 / 3;
+    TestUtil.seekToTimeUs(extractor, seekMap, firstSeekTimeUs, dataSource, trackOutput, fileUri);
+    long targetSeekTimeUs = seekMap.getDurationUs() / 3;
+    int extractedFrameIndex =
+        TestUtil.seekToTimeUs(
+            extractor, seekMap, targetSeekTimeUs, dataSource, trackOutput, fileUri);
+
+    assertThat(extractedFrameIndex).isNotEqualTo(C.INDEX_UNSET);
+    assertFirstFrameAfterSeekIsWithinKeyFrameInterval(
+        fileName, trackId, trackOutput, extractedFrameIndex, targetSeekTimeUs);
+  }
+
+  @Test
+  public void seeking_handlesSeekingForward() throws Exception {
+    String fileName = TEST_FILE_KEY_FRAME_INDEX;
+    Uri fileUri = TestUtil.buildAssetUri(fileName);
+    SeekMap seekMap = TestUtil.extractSeekMap(extractor, extractorOutput, dataSource, fileUri);
+    int trackId = extractorOutput.trackOutputs.keyAt(0);
+    FakeTrackOutput trackOutput = extractorOutput.trackOutputs.get(trackId);
+
+    long firstSeekTimeUs = seekMap.getDurationUs() / 3;
+    TestUtil.seekToTimeUs(extractor, seekMap, firstSeekTimeUs, dataSource, trackOutput, fileUri);
+    long targetSeekTimeUs = seekMap.getDurationUs() * 2 / 3;
+    int extractedFrameIndex =
+        TestUtil.seekToTimeUs(
+            extractor, seekMap, targetSeekTimeUs, dataSource, trackOutput, fileUri);
+
+    assertThat(extractedFrameIndex).isNotEqualTo(C.INDEX_UNSET);
+    assertFirstFrameAfterSeekIsWithinKeyFrameInterval(
+        fileName, trackId, trackOutput, extractedFrameIndex, targetSeekTimeUs);
+  }
+
+  private static void assertFirstFrameAfterSeekIsWithinKeyFrameInterval(
+      String fileName,
+      int trackId,
+      FakeTrackOutput trackOutput,
+      int firstFrameIndexAfterSeek,
+      long targetSeekTimeUs)
+      throws IOException {
+    long foundFrameTimeUs = trackOutput.getSampleTimeUs(firstFrameIndexAfterSeek);
+    assertThat(targetSeekTimeUs - foundFrameTimeUs).isAtMost(KEY_FRAMES_INTERVAL_US);
+
+    FakeTrackOutput expectedTrackOutput = getTrackOutput(fileName, trackId);
+    int foundFrameIndex = getFrameIndex(expectedTrackOutput, foundFrameTimeUs);
+
+    trackOutput.assertSample(
+        firstFrameIndexAfterSeek,
+        expectedTrackOutput.getSampleData(foundFrameIndex),
+        expectedTrackOutput.getSampleTimeUs(foundFrameIndex),
+        expectedTrackOutput.getSampleFlags(foundFrameIndex),
+        expectedTrackOutput.getSampleCryptoData(foundFrameIndex));
+  }
+
+  private static FakeTrackOutput getTrackOutput(String fileName, int trackId) throws IOException {
+    return extractAllSamplesFromFile(
+            new FlvExtractor(), ApplicationProvider.getApplicationContext(), fileName)
+        .trackOutputs
+        .get(trackId);
+  }
+
+  private static int getFrameIndex(FakeTrackOutput trackOutput, long targetSeekTimeUs) {
+    List<Long> frameTimes = trackOutput.getSampleTimesUs();
+    return Util.binarySearchFloor(
+        frameTimes, targetSeekTimeUs, /* inclusive= */ true, /* stayInBounds= */ false);
+  }
+}
diff --git a/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorTest.java b/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorTest.java
index 06678ae912c..248e4b378db 100644
--- a/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorTest.java
+++ b/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/flv/FlvExtractorTest.java
@@ -38,4 +38,10 @@ public static List<Object[]> params() {
   public void sample() throws Exception {
     ExtractorAsserts.assertBehavior(FlvExtractor::new, "media/flv/sample.flv", simulationConfig);
   }
+
+  @Test
+  public void sampleSeekable() throws Exception {
+    ExtractorAsserts.assertBehavior(
+        FlvExtractor::new, "media/flv/sample-with-key-frame-index.flv", simulationConfig);
+  }
 }
diff --git a/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.0.dump b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.0.dump
new file mode 100644
index 00000000000..387853091ef
--- /dev/null
+++ b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.0.dump
@@ -0,0 +1,303 @@
+seekMap:
+  isSeekable = true
+  duration = 3042000
+  getPosition(0) = [[timeUs=0, position=788]]
+  getPosition(1) = [[timeUs=0, position=788], [timeUs=1000000, position=6537]]
+  getPosition(1521000) = [[timeUs=1000000, position=6537], [timeUs=2000000, position=17543]]
+  getPosition(3042000) = [[timeUs=2000000, position=17543]]
+numberOfTracks = 1
+track 9:
+  total output bytes = 28759
+  sample count = 71
+  format 0:
+    sampleMimeType = video/avc
+    width = 320
+    height = 180
+    initializationData:
+      data = length 30, hash 962338CC
+      data = length 10, hash 7A0D0F2B
+  sample 0:
+    time = 84000
+    flags = 1
+    data = length 747, hash 59AEB08
+  sample 1:
+    time = 250000
+    flags = 0
+    data = length 117, hash 57A315CB
+  sample 2:
+    time = 167000
+    flags = 0
+    data = length 16, hash 7E8FA845
+  sample 3:
+    time = 125000
+    flags = 0
+    data = length 13, hash 7AEB9BE0
+  sample 4:
+    time = 209000
+    flags = 0
+    data = length 16, hash 644DA4CC
+  sample 5:
+    time = 334000
+    flags = 0
+    data = length 200, hash E5BF3A39
+  sample 6:
+    time = 292000
+    flags = 0
+    data = length 167, hash 74FCA726
+  sample 7:
+    time = 375000
+    flags = 0
+    data = length 134, hash 3B12FEC0
+  sample 8:
+    time = 459000
+    flags = 0
+    data = length 264, hash 7D9323C7
+  sample 9:
+    time = 417000
+    flags = 0
+    data = length 141, hash B5AAF09F
+  sample 10:
+    time = 500000
+    flags = 0
+    data = length 229, hash 181AD475
+  sample 11:
+    time = 625000
+    flags = 0
+    data = length 279, hash 11A95D98
+  sample 12:
+    time = 542000
+    flags = 0
+    data = length 39, hash 6F87AFD9
+  sample 13:
+    time = 584000
+    flags = 0
+    data = length 88, hash 6E7EC1EF
+  sample 14:
+    time = 750000
+    flags = 0
+    data = length 481, hash 82246706
+  sample 15:
+    time = 667000
+    flags = 0
+    data = length 103, hash A201C852
+  sample 16:
+    time = 709000
+    flags = 0
+    data = length 85, hash 7D6F33C4
+  sample 17:
+    time = 875000
+    flags = 0
+    data = length 659, hash 3BF583EF
+  sample 18:
+    time = 792000
+    flags = 0
+    data = length 134, hash 46C97FD9
+  sample 19:
+    time = 834000
+    flags = 0
+    data = length 153, hash 5E737D26
+  sample 20:
+    time = 1000000
+    flags = 0
+    data = length 652, hash E3151CCE
+  sample 21:
+    time = 917000
+    flags = 0
+    data = length 86, hash A1884AD8
+  sample 22:
+    time = 959000
+    flags = 0
+    data = length 150, hash 6C7DEF31
+  sample 23:
+    time = 1042000
+    flags = 0
+    data = length 316, hash E7867
+  sample 24:
+    time = 1084000
+    flags = 1
+    data = length 1950, hash 28E6760E
+  sample 25:
+    time = 1250000
+    flags = 0
+    data = length 561, hash 8394BDB5
+  sample 26:
+    time = 1167000
+    flags = 0
+    data = length 130, hash B50D0F26
+  sample 27:
+    time = 1125000
+    flags = 0
+    data = length 185, hash 359FC134
+  sample 28:
+    time = 1209000
+    flags = 0
+    data = length 130, hash C53797EC
+  sample 29:
+    time = 1417000
+    flags = 0
+    data = length 867, hash B87AD770
+  sample 30:
+    time = 1334000
+    flags = 0
+    data = length 155, hash 73B4B0E7
+  sample 31:
+    time = 1292000
+    flags = 0
+    data = length 168, hash 9C9C9994
+  sample 32:
+    time = 1375000
+    flags = 0
+    data = length 145, hash 2D3F2527
+  sample 33:
+    time = 1584000
+    flags = 0
+    data = length 991, hash 78143488
+  sample 34:
+    time = 1500000
+    flags = 0
+    data = length 174, hash 6C778CE7
+  sample 35:
+    time = 1459000
+    flags = 0
+    data = length 82, hash D605F20D
+  sample 36:
+    time = 1542000
+    flags = 0
+    data = length 125, hash 248E8190
+  sample 37:
+    time = 1750000
+    flags = 0
+    data = length 1095, hash 21B08B6C
+  sample 38:
+    time = 1667000
+    flags = 0
+    data = length 238, hash AE5854DF
+  sample 39:
+    time = 1625000
+    flags = 0
+    data = length 151, hash DF20C082
+  sample 40:
+    time = 1709000
+    flags = 0
+    data = length 45, hash 35165468
+  sample 41:
+    time = 1875000
+    flags = 0
+    data = length 1425, hash D20DA4F0
+  sample 42:
+    time = 1792000
+    flags = 0
+    data = length 67, hash 49E25397
+  sample 43:
+    time = 1834000
+    flags = 0
+    data = length 72, hash EEDD2F83
+  sample 44:
+    time = 2042000
+    flags = 0
+    data = length 1382, hash 6C35D237
+  sample 45:
+    time = 1959000
+    flags = 0
+    data = length 186, hash CDE97917
+  sample 46:
+    time = 1917000
+    flags = 0
+    data = length 80, hash 923EC2C
+  sample 47:
+    time = 2000000
+    flags = 0
+    data = length 122, hash EB3EEF54
+  sample 48:
+    time = 2084000
+    flags = 1
+    data = length 4380, hash 9221E054
+  sample 49:
+    time = 2167000
+    flags = 0
+    data = length 819, hash 46A722D6
+  sample 50:
+    time = 2125000
+    flags = 0
+    data = length 140, hash E9AA6D8B
+  sample 51:
+    time = 2250000
+    flags = 0
+    data = length 711, hash C49CB26
+  sample 52:
+    time = 2209000
+    flags = 0
+    data = length 111, hash A53830B7
+  sample 53:
+    time = 2417000
+    flags = 0
+    data = length 1062, hash B95BF284
+  sample 54:
+    time = 2334000
+    flags = 0
+    data = length 312, hash 1C667DA3
+  sample 55:
+    time = 2292000
+    flags = 0
+    data = length 132, hash 59C0F906
+  sample 56:
+    time = 2375000
+    flags = 0
+    data = length 149, hash B7F8F4A5
+  sample 57:
+    time = 2584000
+    flags = 0
+    data = length 1040, hash 82D4CCFD
+  sample 58:
+    time = 2500000
+    flags = 0
+    data = length 349, hash C1236BA4
+  sample 59:
+    time = 2459000
+    flags = 0
+    data = length 140, hash 67015D1B
+  sample 60:
+    time = 2542000
+    flags = 0
+    data = length 186, hash C0DF4AB0
+  sample 61:
+    time = 2750000
+    flags = 0
+    data = length 811, hash EEA6FBFF
+  sample 62:
+    time = 2667000
+    flags = 0
+    data = length 356, hash A9847C12
+  sample 63:
+    time = 2625000
+    flags = 0
+    data = length 156, hash 61E72801
+  sample 64:
+    time = 2709000
+    flags = 0
+    data = length 212, hash F1F7EBE8
+  sample 65:
+    time = 2917000
+    flags = 0
+    data = length 681, hash FA95355F
+  sample 66:
+    time = 2834000
+    flags = 0
+    data = length 351, hash F771D4DD
+  sample 67:
+    time = 2792000
+    flags = 0
+    data = length 174, hash 325A7512
+  sample 68:
+    time = 2875000
+    flags = 0
+    data = length 199, hash A22FAA40
+  sample 69:
+    time = 3000000
+    flags = 0
+    data = length 322, hash C494E5A7
+  sample 70:
+    time = 2959000
+    flags = 0
+    data = length 171, hash 2DA9ECEC
+tracksEnded = true
diff --git a/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.1.dump b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.1.dump
new file mode 100644
index 00000000000..4ed0bc703f4
--- /dev/null
+++ b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.1.dump
@@ -0,0 +1,207 @@
+seekMap:
+  isSeekable = true
+  duration = 3042000
+  getPosition(0) = [[timeUs=0, position=788]]
+  getPosition(1) = [[timeUs=0, position=788], [timeUs=1000000, position=6537]]
+  getPosition(1521000) = [[timeUs=1000000, position=6537], [timeUs=2000000, position=17543]]
+  getPosition(3042000) = [[timeUs=2000000, position=17543]]
+numberOfTracks = 1
+track 9:
+  total output bytes = 23490
+  sample count = 47
+  format 0:
+    sampleMimeType = video/avc
+    width = 320
+    height = 180
+    initializationData:
+      data = length 30, hash 962338CC
+      data = length 10, hash 7A0D0F2B
+  sample 0:
+    time = 1084000
+    flags = 1
+    data = length 1950, hash 28E6760E
+  sample 1:
+    time = 1250000
+    flags = 0
+    data = length 561, hash 8394BDB5
+  sample 2:
+    time = 1167000
+    flags = 0
+    data = length 130, hash B50D0F26
+  sample 3:
+    time = 1125000
+    flags = 0
+    data = length 185, hash 359FC134
+  sample 4:
+    time = 1209000
+    flags = 0
+    data = length 130, hash C53797EC
+  sample 5:
+    time = 1417000
+    flags = 0
+    data = length 867, hash B87AD770
+  sample 6:
+    time = 1334000
+    flags = 0
+    data = length 155, hash 73B4B0E7
+  sample 7:
+    time = 1292000
+    flags = 0
+    data = length 168, hash 9C9C9994
+  sample 8:
+    time = 1375000
+    flags = 0
+    data = length 145, hash 2D3F2527
+  sample 9:
+    time = 1584000
+    flags = 0
+    data = length 991, hash 78143488
+  sample 10:
+    time = 1500000
+    flags = 0
+    data = length 174, hash 6C778CE7
+  sample 11:
+    time = 1459000
+    flags = 0
+    data = length 82, hash D605F20D
+  sample 12:
+    time = 1542000
+    flags = 0
+    data = length 125, hash 248E8190
+  sample 13:
+    time = 1750000
+    flags = 0
+    data = length 1095, hash 21B08B6C
+  sample 14:
+    time = 1667000
+    flags = 0
+    data = length 238, hash AE5854DF
+  sample 15:
+    time = 1625000
+    flags = 0
+    data = length 151, hash DF20C082
+  sample 16:
+    time = 1709000
+    flags = 0
+    data = length 45, hash 35165468
+  sample 17:
+    time = 1875000
+    flags = 0
+    data = length 1425, hash D20DA4F0
+  sample 18:
+    time = 1792000
+    flags = 0
+    data = length 67, hash 49E25397
+  sample 19:
+    time = 1834000
+    flags = 0
+    data = length 72, hash EEDD2F83
+  sample 20:
+    time = 2042000
+    flags = 0
+    data = length 1382, hash 6C35D237
+  sample 21:
+    time = 1959000
+    flags = 0
+    data = length 186, hash CDE97917
+  sample 22:
+    time = 1917000
+    flags = 0
+    data = length 80, hash 923EC2C
+  sample 23:
+    time = 2000000
+    flags = 0
+    data = length 122, hash EB3EEF54
+  sample 24:
+    time = 2084000
+    flags = 1
+    data = length 4380, hash 9221E054
+  sample 25:
+    time = 2167000
+    flags = 0
+    data = length 819, hash 46A722D6
+  sample 26:
+    time = 2125000
+    flags = 0
+    data = length 140, hash E9AA6D8B
+  sample 27:
+    time = 2250000
+    flags = 0
+    data = length 711, hash C49CB26
+  sample 28:
+    time = 2209000
+    flags = 0
+    data = length 111, hash A53830B7
+  sample 29:
+    time = 2417000
+    flags = 0
+    data = length 1062, hash B95BF284
+  sample 30:
+    time = 2334000
+    flags = 0
+    data = length 312, hash 1C667DA3
+  sample 31:
+    time = 2292000
+    flags = 0
+    data = length 132, hash 59C0F906
+  sample 32:
+    time = 2375000
+    flags = 0
+    data = length 149, hash B7F8F4A5
+  sample 33:
+    time = 2584000
+    flags = 0
+    data = length 1040, hash 82D4CCFD
+  sample 34:
+    time = 2500000
+    flags = 0
+    data = length 349, hash C1236BA4
+  sample 35:
+    time = 2459000
+    flags = 0
+    data = length 140, hash 67015D1B
+  sample 36:
+    time = 2542000
+    flags = 0
+    data = length 186, hash C0DF4AB0
+  sample 37:
+    time = 2750000
+    flags = 0
+    data = length 811, hash EEA6FBFF
+  sample 38:
+    time = 2667000
+    flags = 0
+    data = length 356, hash A9847C12
+  sample 39:
+    time = 2625000
+    flags = 0
+    data = length 156, hash 61E72801
+  sample 40:
+    time = 2709000
+    flags = 0
+    data = length 212, hash F1F7EBE8
+  sample 41:
+    time = 2917000
+    flags = 0
+    data = length 681, hash FA95355F
+  sample 42:
+    time = 2834000
+    flags = 0
+    data = length 351, hash F771D4DD
+  sample 43:
+    time = 2792000
+    flags = 0
+    data = length 174, hash 325A7512
+  sample 44:
+    time = 2875000
+    flags = 0
+    data = length 199, hash A22FAA40
+  sample 45:
+    time = 3000000
+    flags = 0
+    data = length 322, hash C494E5A7
+  sample 46:
+    time = 2959000
+    flags = 0
+    data = length 171, hash 2DA9ECEC
+tracksEnded = true
diff --git a/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.2.dump b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.2.dump
new file mode 100644
index 00000000000..eced87adfc4
--- /dev/null
+++ b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.2.dump
@@ -0,0 +1,111 @@
+seekMap:
+  isSeekable = true
+  duration = 3042000
+  getPosition(0) = [[timeUs=0, position=788]]
+  getPosition(1) = [[timeUs=0, position=788], [timeUs=1000000, position=6537]]
+  getPosition(1521000) = [[timeUs=1000000, position=6537], [timeUs=2000000, position=17543]]
+  getPosition(3042000) = [[timeUs=2000000, position=17543]]
+numberOfTracks = 1
+track 9:
+  total output bytes = 12964
+  sample count = 23
+  format 0:
+    sampleMimeType = video/avc
+    width = 320
+    height = 180
+    initializationData:
+      data = length 30, hash 962338CC
+      data = length 10, hash 7A0D0F2B
+  sample 0:
+    time = 2084000
+    flags = 1
+    data = length 4380, hash 9221E054
+  sample 1:
+    time = 2167000
+    flags = 0
+    data = length 819, hash 46A722D6
+  sample 2:
+    time = 2125000
+    flags = 0
+    data = length 140, hash E9AA6D8B
+  sample 3:
+    time = 2250000
+    flags = 0
+    data = length 711, hash C49CB26
+  sample 4:
+    time = 2209000
+    flags = 0
+    data = length 111, hash A53830B7
+  sample 5:
+    time = 2417000
+    flags = 0
+    data = length 1062, hash B95BF284
+  sample 6:
+    time = 2334000
+    flags = 0
+    data = length 312, hash 1C667DA3
+  sample 7:
+    time = 2292000
+    flags = 0
+    data = length 132, hash 59C0F906
+  sample 8:
+    time = 2375000
+    flags = 0
+    data = length 149, hash B7F8F4A5
+  sample 9:
+    time = 2584000
+    flags = 0
+    data = length 1040, hash 82D4CCFD
+  sample 10:
+    time = 2500000
+    flags = 0
+    data = length 349, hash C1236BA4
+  sample 11:
+    time = 2459000
+    flags = 0
+    data = length 140, hash 67015D1B
+  sample 12:
+    time = 2542000
+    flags = 0
+    data = length 186, hash C0DF4AB0
+  sample 13:
+    time = 2750000
+    flags = 0
+    data = length 811, hash EEA6FBFF
+  sample 14:
+    time = 2667000
+    flags = 0
+    data = length 356, hash A9847C12
+  sample 15:
+    time = 2625000
+    flags = 0
+    data = length 156, hash 61E72801
+  sample 16:
+    time = 2709000
+    flags = 0
+    data = length 212, hash F1F7EBE8
+  sample 17:
+    time = 2917000
+    flags = 0
+    data = length 681, hash FA95355F
+  sample 18:
+    time = 2834000
+    flags = 0
+    data = length 351, hash F771D4DD
+  sample 19:
+    time = 2792000
+    flags = 0
+    data = length 174, hash 325A7512
+  sample 20:
+    time = 2875000
+    flags = 0
+    data = length 199, hash A22FAA40
+  sample 21:
+    time = 3000000
+    flags = 0
+    data = length 322, hash C494E5A7
+  sample 22:
+    time = 2959000
+    flags = 0
+    data = length 171, hash 2DA9ECEC
+tracksEnded = true
diff --git a/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.3.dump b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.3.dump
new file mode 100644
index 00000000000..eced87adfc4
--- /dev/null
+++ b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.3.dump
@@ -0,0 +1,111 @@
+seekMap:
+  isSeekable = true
+  duration = 3042000
+  getPosition(0) = [[timeUs=0, position=788]]
+  getPosition(1) = [[timeUs=0, position=788], [timeUs=1000000, position=6537]]
+  getPosition(1521000) = [[timeUs=1000000, position=6537], [timeUs=2000000, position=17543]]
+  getPosition(3042000) = [[timeUs=2000000, position=17543]]
+numberOfTracks = 1
+track 9:
+  total output bytes = 12964
+  sample count = 23
+  format 0:
+    sampleMimeType = video/avc
+    width = 320
+    height = 180
+    initializationData:
+      data = length 30, hash 962338CC
+      data = length 10, hash 7A0D0F2B
+  sample 0:
+    time = 2084000
+    flags = 1
+    data = length 4380, hash 9221E054
+  sample 1:
+    time = 2167000
+    flags = 0
+    data = length 819, hash 46A722D6
+  sample 2:
+    time = 2125000
+    flags = 0
+    data = length 140, hash E9AA6D8B
+  sample 3:
+    time = 2250000
+    flags = 0
+    data = length 711, hash C49CB26
+  sample 4:
+    time = 2209000
+    flags = 0
+    data = length 111, hash A53830B7
+  sample 5:
+    time = 2417000
+    flags = 0
+    data = length 1062, hash B95BF284
+  sample 6:
+    time = 2334000
+    flags = 0
+    data = length 312, hash 1C667DA3
+  sample 7:
+    time = 2292000
+    flags = 0
+    data = length 132, hash 59C0F906
+  sample 8:
+    time = 2375000
+    flags = 0
+    data = length 149, hash B7F8F4A5
+  sample 9:
+    time = 2584000
+    flags = 0
+    data = length 1040, hash 82D4CCFD
+  sample 10:
+    time = 2500000
+    flags = 0
+    data = length 349, hash C1236BA4
+  sample 11:
+    time = 2459000
+    flags = 0
+    data = length 140, hash 67015D1B
+  sample 12:
+    time = 2542000
+    flags = 0
+    data = length 186, hash C0DF4AB0
+  sample 13:
+    time = 2750000
+    flags = 0
+    data = length 811, hash EEA6FBFF
+  sample 14:
+    time = 2667000
+    flags = 0
+    data = length 356, hash A9847C12
+  sample 15:
+    time = 2625000
+    flags = 0
+    data = length 156, hash 61E72801
+  sample 16:
+    time = 2709000
+    flags = 0
+    data = length 212, hash F1F7EBE8
+  sample 17:
+    time = 2917000
+    flags = 0
+    data = length 681, hash FA95355F
+  sample 18:
+    time = 2834000
+    flags = 0
+    data = length 351, hash F771D4DD
+  sample 19:
+    time = 2792000
+    flags = 0
+    data = length 174, hash 325A7512
+  sample 20:
+    time = 2875000
+    flags = 0
+    data = length 199, hash A22FAA40
+  sample 21:
+    time = 3000000
+    flags = 0
+    data = length 322, hash C494E5A7
+  sample 22:
+    time = 2959000
+    flags = 0
+    data = length 171, hash 2DA9ECEC
+tracksEnded = true
diff --git a/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.unknown_length.dump b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.unknown_length.dump
new file mode 100644
index 00000000000..387853091ef
--- /dev/null
+++ b/testdata/src/test/assets/extractordumps/flv/sample-with-key-frame-index.flv.unknown_length.dump
@@ -0,0 +1,303 @@
+seekMap:
+  isSeekable = true
+  duration = 3042000
+  getPosition(0) = [[timeUs=0, position=788]]
+  getPosition(1) = [[timeUs=0, position=788], [timeUs=1000000, position=6537]]
+  getPosition(1521000) = [[timeUs=1000000, position=6537], [timeUs=2000000, position=17543]]
+  getPosition(3042000) = [[timeUs=2000000, position=17543]]
+numberOfTracks = 1
+track 9:
+  total output bytes = 28759
+  sample count = 71
+  format 0:
+    sampleMimeType = video/avc
+    width = 320
+    height = 180
+    initializationData:
+      data = length 30, hash 962338CC
+      data = length 10, hash 7A0D0F2B
+  sample 0:
+    time = 84000
+    flags = 1
+    data = length 747, hash 59AEB08
+  sample 1:
+    time = 250000
+    flags = 0
+    data = length 117, hash 57A315CB
+  sample 2:
+    time = 167000
+    flags = 0
+    data = length 16, hash 7E8FA845
+  sample 3:
+    time = 125000
+    flags = 0
+    data = length 13, hash 7AEB9BE0
+  sample 4:
+    time = 209000
+    flags = 0
+    data = length 16, hash 644DA4CC
+  sample 5:
+    time = 334000
+    flags = 0
+    data = length 200, hash E5BF3A39
+  sample 6:
+    time = 292000
+    flags = 0
+    data = length 167, hash 74FCA726
+  sample 7:
+    time = 375000
+    flags = 0
+    data = length 134, hash 3B12FEC0
+  sample 8:
+    time = 459000
+    flags = 0
+    data = length 264, hash 7D9323C7
+  sample 9:
+    time = 417000
+    flags = 0
+    data = length 141, hash B5AAF09F
+  sample 10:
+    time = 500000
+    flags = 0
+    data = length 229, hash 181AD475
+  sample 11:
+    time = 625000
+    flags = 0
+    data = length 279, hash 11A95D98
+  sample 12:
+    time = 542000
+    flags = 0
+    data = length 39, hash 6F87AFD9
+  sample 13:
+    time = 584000
+    flags = 0
+    data = length 88, hash 6E7EC1EF
+  sample 14:
+    time = 750000
+    flags = 0
+    data = length 481, hash 82246706
+  sample 15:
+    time = 667000
+    flags = 0
+    data = length 103, hash A201C852
+  sample 16:
+    time = 709000
+    flags = 0
+    data = length 85, hash 7D6F33C4
+  sample 17:
+    time = 875000
+    flags = 0
+    data = length 659, hash 3BF583EF
+  sample 18:
+    time = 792000
+    flags = 0
+    data = length 134, hash 46C97FD9
+  sample 19:
+    time = 834000
+    flags = 0
+    data = length 153, hash 5E737D26
+  sample 20:
+    time = 1000000
+    flags = 0
+    data = length 652, hash E3151CCE
+  sample 21:
+    time = 917000
+    flags = 0
+    data = length 86, hash A1884AD8
+  sample 22:
+    time = 959000
+    flags = 0
+    data = length 150, hash 6C7DEF31
+  sample 23:
+    time = 1042000
+    flags = 0
+    data = length 316, hash E7867
+  sample 24:
+    time = 1084000
+    flags = 1
+    data = length 1950, hash 28E6760E
+  sample 25:
+    time = 1250000
+    flags = 0
+    data = length 561, hash 8394BDB5
+  sample 26:
+    time = 1167000
+    flags = 0
+    data = length 130, hash B50D0F26
+  sample 27:
+    time = 1125000
+    flags = 0
+    data = length 185, hash 359FC134
+  sample 28:
+    time = 1209000
+    flags = 0
+    data = length 130, hash C53797EC
+  sample 29:
+    time = 1417000
+    flags = 0
+    data = length 867, hash B87AD770
+  sample 30:
+    time = 1334000
+    flags = 0
+    data = length 155, hash 73B4B0E7
+  sample 31:
+    time = 1292000
+    flags = 0
+    data = length 168, hash 9C9C9994
+  sample 32:
+    time = 1375000
+    flags = 0
+    data = length 145, hash 2D3F2527
+  sample 33:
+    time = 1584000
+    flags = 0
+    data = length 991, hash 78143488
+  sample 34:
+    time = 1500000
+    flags = 0
+    data = length 174, hash 6C778CE7
+  sample 35:
+    time = 1459000
+    flags = 0
+    data = length 82, hash D605F20D
+  sample 36:
+    time = 1542000
+    flags = 0
+    data = length 125, hash 248E8190
+  sample 37:
+    time = 1750000
+    flags = 0
+    data = length 1095, hash 21B08B6C
+  sample 38:
+    time = 1667000
+    flags = 0
+    data = length 238, hash AE5854DF
+  sample 39:
+    time = 1625000
+    flags = 0
+    data = length 151, hash DF20C082
+  sample 40:
+    time = 1709000
+    flags = 0
+    data = length 45, hash 35165468
+  sample 41:
+    time = 1875000
+    flags = 0
+    data = length 1425, hash D20DA4F0
+  sample 42:
+    time = 1792000
+    flags = 0
+    data = length 67, hash 49E25397
+  sample 43:
+    time = 1834000
+    flags = 0
+    data = length 72, hash EEDD2F83
+  sample 44:
+    time = 2042000
+    flags = 0
+    data = length 1382, hash 6C35D237
+  sample 45:
+    time = 1959000
+    flags = 0
+    data = length 186, hash CDE97917
+  sample 46:
+    time = 1917000
+    flags = 0
+    data = length 80, hash 923EC2C
+  sample 47:
+    time = 2000000
+    flags = 0
+    data = length 122, hash EB3EEF54
+  sample 48:
+    time = 2084000
+    flags = 1
+    data = length 4380, hash 9221E054
+  sample 49:
+    time = 2167000
+    flags = 0
+    data = length 819, hash 46A722D6
+  sample 50:
+    time = 2125000
+    flags = 0
+    data = length 140, hash E9AA6D8B
+  sample 51:
+    time = 2250000
+    flags = 0
+    data = length 711, hash C49CB26
+  sample 52:
+    time = 2209000
+    flags = 0
+    data = length 111, hash A53830B7
+  sample 53:
+    time = 2417000
+    flags = 0
+    data = length 1062, hash B95BF284
+  sample 54:
+    time = 2334000
+    flags = 0
+    data = length 312, hash 1C667DA3
+  sample 55:
+    time = 2292000
+    flags = 0
+    data = length 132, hash 59C0F906
+  sample 56:
+    time = 2375000
+    flags = 0
+    data = length 149, hash B7F8F4A5
+  sample 57:
+    time = 2584000
+    flags = 0
+    data = length 1040, hash 82D4CCFD
+  sample 58:
+    time = 2500000
+    flags = 0
+    data = length 349, hash C1236BA4
+  sample 59:
+    time = 2459000
+    flags = 0
+    data = length 140, hash 67015D1B
+  sample 60:
+    time = 2542000
+    flags = 0
+    data = length 186, hash C0DF4AB0
+  sample 61:
+    time = 2750000
+    flags = 0
+    data = length 811, hash EEA6FBFF
+  sample 62:
+    time = 2667000
+    flags = 0
+    data = length 356, hash A9847C12
+  sample 63:
+    time = 2625000
+    flags = 0
+    data = length 156, hash 61E72801
+  sample 64:
+    time = 2709000
+    flags = 0
+    data = length 212, hash F1F7EBE8
+  sample 65:
+    time = 2917000
+    flags = 0
+    data = length 681, hash FA95355F
+  sample 66:
+    time = 2834000
+    flags = 0
+    data = length 351, hash F771D4DD
+  sample 67:
+    time = 2792000
+    flags = 0
+    data = length 174, hash 325A7512
+  sample 68:
+    time = 2875000
+    flags = 0
+    data = length 199, hash A22FAA40
+  sample 69:
+    time = 3000000
+    flags = 0
+    data = length 322, hash C494E5A7
+  sample 70:
+    time = 2959000
+    flags = 0
+    data = length 171, hash 2DA9ECEC
+tracksEnded = true
diff --git a/testdata/src/test/assets/media/flv/sample-with-key-frame-index.flv b/testdata/src/test/assets/media/flv/sample-with-key-frame-index.flv
new file mode 100644
index 00000000000..fdb223aa0ce
Binary files /dev/null and b/testdata/src/test/assets/media/flv/sample-with-key-frame-index.flv differ