Video and Audio get out of sync

[SimonNumberTwo]

Issue description

We use the ExoPlayer with the ConcatenatingMediaSource to play several videos and while playing them the audio gets more and more out of sync.

Reproduction steps

I created a playlist in the ExoPlayer demo app and let it play. After a short time, the audio is out of sync with the video. I noticed after a short time, the audio is even one word ahead of the video which is really noticable.

Link to test content

Just add the following snippet into the media.exolist.json and play it.

{
    "name": "Test",
    "samples": [
      {
        "name": "Demo",
        "playlist": [
          {
            "uri": "...b4b3b055-ec67-42fa-8b8a-ba72c8a43161.mp4"
          },
          {
            "uri": "...e09efadd-ac5e-4532-ae8d-39a82a2554c6.mp4"
          },
          {
            "uri": "...aad2c8d5-3eef-4d0a-bfc0-605b4f087d3e.mp4"
          },
          {
            "uri": "...f6d37b36-4562-453c-9b9c-34f84b7a5f67.mp4"
          },
          {
            "uri": "...b97d158b-8376-490b-818a-113c8fc0d8b3.mp4"
          },
          {
            "uri": "...0da8afc2-6cf1-429c-ada8-ffe4cb0e488d.mp4"
          },
          {
            "uri": "...aaf713e3-322e-4b55-aca4-dd5149e83f7a.mp4"
          },
          {
            "uri": "...97c8dfb9-7273-4f7a-a884-9904c0eb287f.mp4"
          },
          {
            "uri": "...ea75e621-3ee4-4caa-a025-fa5b41057f50.mp4"
          },
          {
            "uri": "...bd6a884f-d24c-4bfa-a76d-1eb8adc99a9b.mp4"
          },
          {
            "uri": "...81d97d5b-3bd9-4f17-95a1-7e6d16dd25af.mp4"
          },
          {
            "uri": "...e02391ca-4372-4a5e-aeb3-f3568f7ba725.mp4"
          },
          {
            "uri": "...6a84494c-cc9c-4a9c-b3e4-f9ae43f60650.mp4"
          },
          {
            "uri": "...789d8e45-bc81-4033-b8c9-0d4b79e69c2a.mp4"
          },
          {
            "uri": "...673dea6f-bbf4-49ef-bdae-e50ec8f3f799.mp4"
          },
          {
            "uri": "...2e308387-6a51-4e57-be3f-a3fc82cd55a6.mp4"
          },
          {
            "uri": "...e79df479-e0e9-407c-abe7-5170b988150d.mp4"
          },
          {
            "uri": "...0b11f852-23c9-4f0d-90af-7deda848962d.mp4"
          },
          {
            "uri": "...4b5d25ac-d4fd-4c34-ac70-8e5a687ebadd.mp4"
          },
          {
            "uri": "...c881415f-74d7-44d4-bbe9-d82b37cc8a98.mp4"
          },
          {
            "uri": "...6a84494c-cc9c-4a9c-b3e4-f9ae43f60650.mp4"
          },
          {
            "uri": "...a6859216-66c5-4170-b72a-9a997269a601.mp4"
          },
          {
            "uri": "...ab9cc13e-b329-4b3a-82a8-b062c694d808.mp4"
          },
          {
            "uri": "...fefd8ffe-7ea2-4e56-8123-66ccac9ec791.mp4"
          },
          {
            "uri": "...97c8dfb9-7273-4f7a-a884-9904c0eb287f.mp4"
          },
          {
            "uri": "...67eaccc6-715f-4b22-af7e-d66e279f2094.mp4"
          },
          {
            "uri": "...9300ddd1-b388-4bca-9fa6-4c2a8abc74b5.mp4"
          },
          {
            "uri": "...c881415f-74d7-44d4-bbe9-d82b37cc8a98.mp4"
          },
          {
            "uri": "...97c8dfb9-7273-4f7a-a884-9904c0eb287f.mp4"
          },
          {
            "uri": "...130e3aa1-9cd4-4bab-be21-f95ec0ce0a01.mp4"
          },
          {
            "uri": "...0945a8c0-bb22-44e5-8287-6f6ed36e2474.mp4"
          },
          {
            "uri": "...6af7e385-731f-442c-bca1-1a99337ca3b9.mp4"
          }
        ]
      }
    ]
  }

Version of ExoPlayer being used

I tested this with ExoPlayer 2.8.1 and 2.8.4 ad even the dev-v2 branch.

Device(s) and version(s) of Android being used

Personally tested on a Samsung Galaxy S7 Edge, Samsung SM-G955F, Lenovo TB-X304L and HUAWEI BAH-W09.

A full bug report captured from the device

Only thing I noticed were the following lines but I don`t know if it has something to do with it but these log lines occur after every video that has been shown and before the new one will be shown.

2018-09-10 13:37:07.486 895-895/com.google.android.exoplayer2.demo D/EventLogger: loading [317.39, 15.33, window=15, period=15, false]
2018-09-10 13:37:08.025 895-895/com.google.android.exoplayer2.demo D/EventLogger: mediaPeriodReleased [317.93, 15.87, window=15, period=15]
2018-09-10 13:37:08.041 895-895/com.google.android.exoplayer2.demo D/EventLogger: positionDiscontinuity [317.95, 0.01, window=16, period=16, PERIOD_TRANSITION]
2018-09-10 13:37:08.047 895-895/com.google.android.exoplayer2.demo D/EventLogger: tracksChanged [317.95, 0.03, window=16, period=16, 
2018-09-10 13:37:08.047 895-895/com.google.android.exoplayer2.demo D/EventLogger:   Renderer:0 [
2018-09-10 13:37:08.048 895-895/com.google.android.exoplayer2.demo D/EventLogger:     Group:0, adaptive_supported=N/A [
2018-09-10 13:37:08.048 895-895/com.google.android.exoplayer2.demo D/EventLogger:       [X] Track:0, id=1, mimeType=video/avc, res=1920x1080, supported=YES
2018-09-10 13:37:08.048 895-895/com.google.android.exoplayer2.demo D/EventLogger:     ]
2018-09-10 13:37:08.048 895-895/com.google.android.exoplayer2.demo D/EventLogger:   ]
2018-09-10 13:37:08.048 895-895/com.google.android.exoplayer2.demo D/EventLogger:   Renderer:1 [
2018-09-10 13:37:08.048 895-895/com.google.android.exoplayer2.demo D/EventLogger:     Group:0, adaptive_supported=N/A [
2018-09-10 13:37:08.049 895-895/com.google.android.exoplayer2.demo D/EventLogger:       [X] Track:0, id=2, mimeType=audio/mp4a-latm, channels=2, sample_rate=48000, language=eng, supported=YES
2018-09-10 13:37:08.049 895-895/com.google.android.exoplayer2.demo D/EventLogger:     ]
2018-09-10 13:37:08.049 895-895/com.google.android.exoplayer2.demo D/EventLogger:     Metadata [
2018-09-10 13:37:08.050 895-895/com.google.android.exoplayer2.demo D/EventLogger:       TSSE: value=Lavf57.83.100
2018-09-10 13:37:08.050 895-895/com.google.android.exoplayer2.demo D/EventLogger:     ]
2018-09-10 13:37:08.050 895-895/com.google.android.exoplayer2.demo D/EventLogger:   ]
2018-09-10 13:37:08.050 895-895/com.google.android.exoplayer2.demo D/EventLogger: ]
2018-09-10 13:37:13.347 895-895/com.google.android.exoplayer2.demo D/EventLogger: mediaPeriodReadingStarted [323.25, 5.32, window=17, period=17]
2018-09-10 13:37:13.348 895-895/com.google.android.exoplayer2.demo D/EventLogger: decoderInputFormatChanged [323.25, 5.34, window=17, period=17, video, id=1, mimeType=video/avc, res=1920x1080]
2018-09-10 13:37:13.350 895-895/com.google.android.exoplayer2.demo D/EventLogger: downstreamFormatChanged [323.25, 5.34, window=17, period=17, id=1, mimeType=video/avc, res=1920x1080]
2018-09-10 13:37:13.356 895-895/com.google.android.exoplayer2.demo D/EventLogger: decoderInputFormatChanged [323.26, 5.34, window=17, period=17, audio, id=2, mimeType=audio/mp4a-latm, channels=2, sample_rate=48000, language=eng]
2018-09-10 13:37:13.373 895-5100/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Executing->Idle
2018-09-10 13:37:13.378 895-5100/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Idle->Loaded
2018-09-10 13:37:13.379 895-5100/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Loaded
2018-09-10 13:37:13.379 895-5100/com.google.android.exoplayer2.demo I/ACodec:  [OMX.google.aac.decoder] Now kWhatShutdownCompleted event : 8594
2018-09-10 13:37:13.382 895-5100/com.google.android.exoplayer2.demo I/ACodec:  [OMX.google.aac.decoder] Now uninitialized
2018-09-10 13:37:13.382 895-5100/com.google.android.exoplayer2.demo I/ACodec:  [] Now kWhatShutdownCompleted event : 8594
2018-09-10 13:37:13.383 895-5100/com.google.android.exoplayer2.demo I/MediaCodec: Codec shutdown complete
2018-09-10 13:37:13.388 895-4681/com.google.android.exoplayer2.demo I/ACodec:  [] Now uninitialized
2018-09-10 13:37:13.391 895-5107/com.google.android.exoplayer2.demo I/ACodec: [] onAllocateComponent
2018-09-10 13:37:13.394 895-5107/com.google.android.exoplayer2.demo I/OMXClient: Treble IOmx obtained
2018-09-10 13:37:13.403 895-5107/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Loaded
2018-09-10 13:37:13.408 895-5107/com.google.android.exoplayer2.demo I/ACodec: codec does not support config priority (err -2147483648)
2018-09-10 13:37:13.409 895-5107/com.google.android.exoplayer2.demo I/ACodec: codec does not support config operating rate (err -2147483648)
2018-09-10 13:37:13.413 895-5107/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Loaded->Idle
2018-09-10 13:37:13.434 895-5107/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Idle->Executing
2018-09-10 13:37:13.436 895-5107/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Executing
2018-09-10 13:37:13.438 895-895/com.google.android.exoplayer2.demo D/EventLogger: decoderInitialized [323.34, 5.36, window=17, period=17, audio, OMX.google.aac.decoder]
2018-09-10 13:37:13.440 895-895/com.google.android.exoplayer2.demo D/EventLogger: downstreamFormatChanged [323.34, 5.36, window=17, period=17, id=2, mimeType=audio/mp4a-latm, channels=2, sample_rate=48000, language=eng]
2018-09-10 13:37:13.446 895-5107/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now handling output port settings change
2018-09-10 13:37:13.461 895-5107/com.google.android.exoplayer2.demo I/ACodec: [OMX.google.aac.decoder] Now Executing

[tonihei]

This is a duplicate of #4559 and the issue be suppressed by setting the FLAG_WORKAROUND_IGNORE_EDIT_LISTS flag.

[SimonNumberTwo]

Hey @tonihei thank you very much for your quick response. We finally were able to solve this issue.

Big thank you 👍 Keep the good work going :-)