Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/7b74ab4850b0115a996f0076733bc90fc7f8a273 (Autoplay: enable unified policy by default on trunk.).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

The test allows the file to play as autoplay muted in which case we override the availability of audio track to false. My best guess is that the video track is corrupted.

ffmpeg tells me this about the file:
```
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x559d5227a300] Sample size 2147483798 is too large
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x559d5227a300] Sample size 2147484066 is too large
[h264 @ 0x559d5227bc20] sps_id 0 out of range
[h264 @ 0x559d5227bc20] SPS decoding failure, trying again after escaping the NAL
[h264 @ 0x559d5227bc20] sps_id 0 out of range
[h264 @ 0x559d5227bc20] Decoding pps 0 from avcC failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x559d5227a300] Failed to open codec in avformat_find_stream_info
[h264 @ 0x559d5227bc20] sps_id 0 out of range
[h264 @ 0x559d5227bc20] SPS decoding failure, trying again after escaping the NAL
[h264 @ 0x559d5227bc20] sps_id 0 out of range
[h264 @ 0x559d5227bc20] Decoding pps 0 from avcC failed
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'flicker-mp4-3f39b773466c8aad7621d00d36c0706677221d1c1521401315.04.mp4':
  Metadata:
    major_brand     : qt  
    minor_version   : 512
    compatible_brands: qt  
    creation_time   : 1970-01-01T00:00:00.000000Z
    encoder         : Lavf52.40.0
    encoder-eng     : Lavf52.40.0
  Duration: 00:02:56.72, start: 0.000000, bitrate: 279 kb/s
    Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 480x360, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: mp3 (.mp3 / 0x33706D2E), 44100 Hz, stereo, s16p, 128 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : DataHandler
```

I will investigate further.

I was able to reproduce by setting an audio file on a <video autoplay muted>, see https://mounirlamouri.github.io/sandbox/bugs/823592.html

We should forbid autoplay muted if there is no video track.

 Issue 820658  has been merged into this issue.

ClusterFuzz testcase 5411008961839104 is flaky and no longer crashes, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.