No picture when playing Dolby Vision video (Unknown Dolby Vision level string)

[moneytoo]

I'm unsuccessfully trying to play Dolby Vision videos that come from iPhone 11/12 devices (not necessarily the stock recorder app). When playing these two samples:

• iPhone 12: https://cdn.vox-cdn.com/uploads/chorus_asset/file/22023469/12_Pro_Max_IMG_0344.0.qt
• iPhone 11: https://drive.google.com/file/d/1cTRNwacsV-8J8PtcYNVDXBmGZF1SOynj

following is logged and video does not play (no picture at all):

W/MediaCodecUtil: Unknown Dolby Vision level string: 010
    Unknown Dolby Vision level string: 010

W/MediaCodecUtil: Unknown Dolby Vision level string: 012
    Unknown Dolby Vision level string: 012

Platform VideoView plays both videos just fine.

• ExoPlayer version number: 2.12.3
• Android version: 10
• Android device: OnePlus 7

[krocard]

For reference, the level is parsed by this switch.

[kim-vde]

Could you provide a bug report for the 2 following scenarios:

1. Playing one of the videos with MediaPlayer/PlayerView.
2. Attempting to play it with ExoPlayer.

Note that:

• The Android platform doesn't have constants for levels > 9 (https://developer.android.com/reference/android/media/MediaCodecInfo.CodecProfileLevel) so we cannot just add the constants in the switch case mentioned above.
• Having a 3 digits level is a bit surprising. I'll ask Dolby if this is supported and how to interpret it.

[moneytoo]

Here are requested bug reports:

1. MediaPlayer: bugreport-OnePlus7-QKQ1.190716.003-2021-02-02-22-02-18.MediaPlayer.zip
2. ExoPlayer: bugreport-OnePlus7-QKQ1.190716.003-2021-02-02-22-08-39.ExoPlayer.zip

[kim-vde]

I just pushed a fix on branch dev-v2. It will be part of the next release (2.13.0).

Please open another bug if you encounter other issues. Thanks for reporting this one.