Use video passthrough if clipping starts at key frame.

PiperOrigin-RevId: 451380267

libraries/test_data/src/test/assets/transformerdumps/mp4/sample_with_increasing_timestamps_320w_240h.mp4.clipped.dump

@@ -0,0 +1,991 @@
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+  peakBitrate = 192181
+  id = 2
+  sampleMimeType = audio/mp4a-latm
+  codecs = mp4a.40.2
+  maxInputSize = 643
+  channelCount = 2
+  sampleRate = 48000
+  language = en
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+  codecs = avc1.42C015
+  maxInputSize = 14839
+  width = 320
+  height = 240
+  frameRate = 59.997425
+  colorInfo:
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+    colorRange = 1
+    colorTransfer = 3
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+  dataHashCode = -1574660470
+  size = 526
+  isKeyFrame = true
+  presentationTimeUs = 1265687
+sample:
+  trackIndex = 0
+  dataHashCode = 1371653176
+  size = 515
+  isKeyFrame = true
+  presentationTimeUs = 1287020
+sample:
+  trackIndex = 0
+  dataHashCode = -873513581
+  size = 503
+  isKeyFrame = true
+  presentationTimeUs = 1308354
+sample:
+  trackIndex = 0
+  dataHashCode = -1886763688
+  size = 514
+  isKeyFrame = true
+  presentationTimeUs = 1329687
+sample:
+  trackIndex = 0
+  dataHashCode = 1308763541
+  size = 512
+  isKeyFrame = true
+  presentationTimeUs = 1351020
+sample:
+  trackIndex = 0
+  dataHashCode = 490619935
+  size = 505
+  isKeyFrame = true
+  presentationTimeUs = 1372354
+sample:
+  trackIndex = 0
+  dataHashCode = -671375789
+  size = 512
+  isKeyFrame = true
+  presentationTimeUs = 1393687
+sample:
+  trackIndex = 0
+  dataHashCode = -1950105780
+  size = 521
+  isKeyFrame = true
+  presentationTimeUs = 1415020
+sample:
+  trackIndex = 0
+  dataHashCode = -1430221498
+  size = 533
+  isKeyFrame = true
+  presentationTimeUs = 1436354
+sample:
+  trackIndex = 0
+  dataHashCode = 529950036
+  size = 505
+  isKeyFrame = true
+  presentationTimeUs = 1457687
+sample:
+  trackIndex = 0
+  dataHashCode = 1705899587
+  size = 497
+  isKeyFrame = true
+  presentationTimeUs = 1479020
+released = true

libraries/transformer/src/main/java/androidx/media3/transformer/Transformer.java

@@ -758,6 +758,7 @@ public final class Transformer {
                     removeAudio,
                     removeVideo,
                     transformationRequest,
+                    mediaItem.clippingConfiguration.startsAtKeyFrame,
                     videoFrameEffects,
                     encoderFactory,
                     decoderFactory,
@@ -871,6 +872,7 @@ public final class Transformer {
     private final boolean removeAudio;
     private final boolean removeVideo;
     private final TransformationRequest transformationRequest;
+    private final boolean clippingStartsAtKeyFrame;
     private final ImmutableList<GlEffect> videoFrameEffects;
     private final Codec.EncoderFactory encoderFactory;
     private final Codec.DecoderFactory decoderFactory;
@@ -884,6 +886,7 @@ public final class Transformer {
         boolean removeAudio,
         boolean removeVideo,
         TransformationRequest transformationRequest,
+        boolean clippingStartsAtKeyFrame,
         ImmutableList<GlEffect> videoFrameEffects,
         Codec.EncoderFactory encoderFactory,
         Codec.DecoderFactory decoderFactory,
@@ -895,6 +898,7 @@ public final class Transformer {
       this.removeAudio = removeAudio;
       this.removeVideo = removeVideo;
       this.transformationRequest = transformationRequest;
+      this.clippingStartsAtKeyFrame = clippingStartsAtKeyFrame;
       this.videoFrameEffects = videoFrameEffects;
       this.encoderFactory = encoderFactory;
       this.decoderFactory = decoderFactory;
@@ -932,6 +936,7 @@ public final class Transformer {
                 muxerWrapper,
                 mediaClock,
                 transformationRequest,
+                clippingStartsAtKeyFrame,
                 videoFrameEffects,
                 encoderFactory,
                 decoderFactory,

libraries/transformer/src/main/java/androidx/media3/transformer/TransformerVideoRenderer.java

@@ -35,6 +35,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
   private static final String TAG = "TVideoRenderer";
 
   private final Context context;
+  private final boolean clippingStartsAtKeyFrame;
   private final ImmutableList<GlEffect> effects;
   private final Codec.EncoderFactory encoderFactory;
   private final Codec.DecoderFactory decoderFactory;
@@ -49,6 +50,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
       MuxerWrapper muxerWrapper,
       TransformerMediaClock mediaClock,
       TransformationRequest transformationRequest,
+      boolean clippingStartsAtKeyFrame,
       ImmutableList<GlEffect> effects,
       Codec.EncoderFactory encoderFactory,
       Codec.DecoderFactory decoderFactory,
@@ -57,6 +59,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
       Transformer.DebugViewProvider debugViewProvider) {
     super(C.TRACK_TYPE_VIDEO, muxerWrapper, mediaClock, transformationRequest, fallbackListener);
     this.context = context;
+    this.clippingStartsAtKeyFrame = clippingStartsAtKeyFrame;
     this.effects = effects;
     this.encoderFactory = encoderFactory;
     this.decoderFactory = decoderFactory;
@@ -110,8 +113,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
   }
 
   private boolean shouldPassthrough(Format inputFormat) {
-    // TODO(b/233988291): Use passthrough pipeline if the clipping start is a key-frame.
+    if (startPositionOffsetUs != 0 && !clippingStartsAtKeyFrame) {
-    if (startPositionOffsetUs != 0) {
       return false;
     }
     if (encoderFactory.videoNeedsEncoding()) {

libraries/transformer/src/test/java/androidx/media3/transformer/TransformerEndToEndTest.java

@@ -73,9 +73,11 @@ import org.robolectric.shadows.ShadowMediaCodecList;
 @RunWith(AndroidJUnit4.class)
 public final class TransformerEndToEndTest {
 
-  private static final String URI_PREFIX = "asset:///media/";
+  private static final String ASSET_URI_PREFIX = "asset:///media/";
   private static final String FILE_VIDEO_ONLY = "mp4/sample_18byte_nclx_colr.mp4";
   private static final String FILE_AUDIO_VIDEO = "mp4/sample.mp4";
+  private static final String FILE_AUDIO_VIDEO_INCREASING_TIMESTAMPS_15S =
+      "mp4/sample_with_increasing_timestamps_320w_240h.mp4";
   private static final String FILE_WITH_SUBTITLES = "mkv/sample_with_srt.mkv";
   private static final String FILE_WITH_SEF_SLOW_MOTION = "mp4/sample_sef_slow_motion.mp4";
   private static final String FILE_AUDIO_UNSUPPORTED_BY_DECODER = "amr/sample_wb.amr";
@@ -109,7 +111,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void startTransformation_videoOnlyPassthrough_completesSuccessfully() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_VIDEO_ONLY);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -121,7 +123,7 @@ public final class TransformerEndToEndTest {
   public void startTransformation_audioOnlyPassthrough_completesSuccessfully() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
 
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_ENCODER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_ENCODER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -139,7 +141,7 @@ public final class TransformerEndToEndTest {
                     .setAudioMimeType(MimeTypes.AUDIO_AAC) // supported by encoder and muxer
                     .build())
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_ENCODER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_ENCODER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -151,7 +153,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void startTransformation_audioAndVideo_completesSuccessfully() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -159,6 +161,30 @@ public final class TransformerEndToEndTest {
     DumpFileAsserts.assertOutput(context, testMuxer, getDumpFileName(FILE_AUDIO_VIDEO));
   }
 
+  @Test
+  public void startTransformation_audioAndVideo_withClippingStartAtKeyFrame_completesSuccessfully()
+      throws Exception {
+    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
+    MediaItem mediaItem =
+        new MediaItem.Builder()
+            .setUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO_INCREASING_TIMESTAMPS_15S)
+            .setClippingConfiguration(
+                new MediaItem.ClippingConfiguration.Builder()
+                    .setStartPositionMs(12_500)
+                    .setEndPositionMs(14_000)
+                    .setStartsAtKeyFrame(true)
+                    .build())
+            .build();
+
+    transformer.startTransformation(mediaItem, outputPath);
+    TransformerTestRunner.runUntilCompleted(transformer);
+
+    DumpFileAsserts.assertOutput(
+        context,
+        testMuxer,
+        getDumpFileName(FILE_AUDIO_VIDEO_INCREASING_TIMESTAMPS_15S + ".clipped"));
+  }
+
   @Test
   public void startTransformation_withSubtitles_completesSuccessfully() throws Exception {
     Transformer transformer =
@@ -166,7 +192,7 @@ public final class TransformerEndToEndTest {
             .setTransformationRequest(
                 new TransformationRequest.Builder().setAudioMimeType(MimeTypes.AUDIO_AAC).build())
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_WITH_SUBTITLES);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_WITH_SUBTITLES);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -178,7 +204,7 @@ public final class TransformerEndToEndTest {
   public void startTransformation_successiveTransformations_completesSuccessfully()
       throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     // Transform first media item.
     transformer.startTransformation(mediaItem, outputPath);
@@ -195,7 +221,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void startTransformation_concurrentTransformations_throwsError() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_VIDEO_ONLY);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
 
     transformer.startTransformation(mediaItem, outputPath);
 
@@ -207,7 +233,7 @@ public final class TransformerEndToEndTest {
   public void startTransformation_removeAudio_completesSuccessfully() throws Exception {
     Transformer transformer =
         createTransformerBuilder(/* enableFallback= */ false).setRemoveAudio(true).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -220,7 +246,7 @@ public final class TransformerEndToEndTest {
   public void startTransformation_removeVideo_completesSuccessfully() throws Exception {
     Transformer transformer =
         createTransformerBuilder(/* enableFallback= */ false).setRemoveVideo(true).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -240,7 +266,7 @@ public final class TransformerEndToEndTest {
             .addListener(mockListener2)
             .addListener(mockListener3)
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -263,7 +289,7 @@ public final class TransformerEndToEndTest {
             .setTransformationRequest( // Request transcoding so that decoder is used.
                 new TransformationRequest.Builder().setAudioMimeType(MimeTypes.AUDIO_AAC).build())
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_DECODER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_DECODER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformationException exception = TransformerTestRunner.runUntilError(transformer);
@@ -288,7 +314,7 @@ public final class TransformerEndToEndTest {
             .addListener(mockListener2)
             .addListener(mockListener3)
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -314,7 +340,7 @@ public final class TransformerEndToEndTest {
             .addListener(mockListener3)
             .build();
     Transformer transformer2 = transformer1.buildUpon().removeListener(mockListener2).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer2.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer2);
@@ -331,7 +357,7 @@ public final class TransformerEndToEndTest {
             .setTransformationRequest(
                 new TransformationRequest.Builder().setFlattenForSlowMotion(true).build())
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_WITH_SEF_SLOW_MOTION);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_WITH_SEF_SLOW_MOTION);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -352,7 +378,7 @@ public final class TransformerEndToEndTest {
         };
     Transformer transformer =
         createTransformerBuilder(/* enableFallback= */ false).addListener(listener).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -374,7 +400,7 @@ public final class TransformerEndToEndTest {
                         MimeTypes.AUDIO_AMR_NB) // unsupported by encoder, supported by muxer
                     .build())
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformationException exception = TransformerTestRunner.runUntilError(transformer);
@@ -394,7 +420,7 @@ public final class TransformerEndToEndTest {
                     .setAudioMimeType(MimeTypes.AUDIO_AAC) // supported by encoder and muxer
                     .build())
             .build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_DECODER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_DECODER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformationException exception = TransformerTestRunner.runUntilError(transformer);
@@ -420,7 +446,7 @@ public final class TransformerEndToEndTest {
   public void startTransformation_withAudioMuxerFormatUnsupported_completesWithError()
       throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformationException exception = TransformerTestRunner.runUntilError(transformer);
@@ -441,7 +467,7 @@ public final class TransformerEndToEndTest {
         new TransformationRequest.Builder().setAudioMimeType(MimeTypes.AUDIO_AAC).build();
     Transformer transformer =
         createTransformerBuilder(/* enableFallback= */ true).addListener(mockListener).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_MUXER);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);
@@ -455,7 +481,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void startTransformation_afterCancellation_completesSuccessfully() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
 
     transformer.startTransformation(mediaItem, outputPath);
     transformer.cancel();
@@ -475,7 +501,7 @@ public final class TransformerEndToEndTest {
     Looper looper = anotherThread.getLooper();
     Transformer transformer =
         createTransformerBuilder(/* enableFallback= */ false).setLooper(looper).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
     AtomicReference<Exception> exception = new AtomicReference<>();
     CountDownLatch countDownLatch = new CountDownLatch(1);
 
@@ -500,7 +526,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void startTransformation_fromWrongThread_throwsError() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_AUDIO_VIDEO);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
     HandlerThread anotherThread = new HandlerThread("AnotherThread");
     AtomicReference<IllegalStateException> illegalStateException = new AtomicReference<>();
     CountDownLatch countDownLatch = new CountDownLatch(1);
@@ -527,7 +553,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void getProgress_knownDuration_returnsConsistentStates() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_VIDEO_ONLY);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
     AtomicInteger previousProgressState =
         new AtomicInteger(PROGRESS_STATE_WAITING_FOR_AVAILABILITY);
     AtomicBoolean foundInconsistentState = new AtomicBoolean();
@@ -573,7 +599,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void getProgress_knownDuration_givesIncreasingPercentages() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_VIDEO_ONLY);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
     List<Integer> progresses = new ArrayList<>();
     Handler progressHandler =
         new Handler(Looper.myLooper()) {
@@ -608,7 +634,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void getProgress_noCurrentTransformation_returnsNoTransformation() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_VIDEO_ONLY);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
 
     @Transformer.ProgressState int stateBeforeTransform = transformer.getProgress(progressHolder);
     transformer.startTransformation(mediaItem, outputPath);
@@ -622,7 +648,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void getProgress_unknownDuration_returnsConsistentStates() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_UNKNOWN_DURATION);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_UNKNOWN_DURATION);
     AtomicInteger previousProgressState =
         new AtomicInteger(PROGRESS_STATE_WAITING_FOR_AVAILABILITY);
     AtomicBoolean foundInconsistentState = new AtomicBoolean();
@@ -689,7 +715,7 @@ public final class TransformerEndToEndTest {
   @Test
   public void cancel_afterCompletion_doesNotThrow() throws Exception {
     Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
-    MediaItem mediaItem = MediaItem.fromUri(URI_PREFIX + FILE_VIDEO_ONLY);
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
 
     transformer.startTransformation(mediaItem, outputPath);
     TransformerTestRunner.runUntilCompleted(transformer);