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Problems Side Loading Subtitles in ExoPlayer v2.0.1 #1882

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mnarmar opened this issue Sep 30, 2016 · 3 comments
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Problems Side Loading Subtitles in ExoPlayer v2.0.1 #1882

mnarmar opened this issue Sep 30, 2016 · 3 comments
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@mnarmar
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mnarmar commented Sep 30, 2016 •
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We use SmoothStreaming / Playready and depend on Side Loading independent TTML Subtitles.

Found two problems trying to Side Load TTML Subtitles using MergingMediaSource containing SingleSampleMediaSource and SsMediaSource:

1-
DefaultTrackSelector.selectTextTrack correctly receives the TTML track, but it never gets it selected.
Hint : adjusting the score check in a DefaultTrackSelector subclass to be {if (trackScore >= selectedTrackScore) ... } , Solved it and got it selected.

2 -
Received crash:
Caused by: java.lang.NullPointerException: Attempt to get length of null array
at com.google.android.exoplayer2.source.SingleSampleMediaPeriod$SourceLoadable.load(SingleSampleMediaPeriod.java:272)

Examining this NullPointerException crash , we found that it is checking length of SourceLoadable.sampleData before it ever gets initialized or assigned.
@ojw28 ojw28 added the bug label Oct 3, 2016
@ojw28
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ojw28 commented Oct 3, 2016

1 - It's working as intended that the track isn't selected by default. If you want this behaviour, you should specify C.SELECTION_FLAG_DEFAULT as the selectionFlags argument when creating the format for the text track. DefaultTrackSelector also exposes methods for selecting the track.

2 - This is a bug. We'll push a fix shortly.

@mnarmar
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mnarmar commented Oct 3, 2016

1 - Thanks providing what is missed
2 - Waiting for the fix

ojw28 added a commit that referenced this issue Oct 3, 2016
@ojw28
Fix sideloaded subtitles
f75f3d7 
- Fix NPE issue in SingleSampleMediaPeriod.
- Delay handling of EOS in TextRenderer until the last
  subtitle is fully played out.

Issue: #1882

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=134979286
@ojw28
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ojw28 commented Oct 3, 2016

A fix has been pushed to dev-v2. Thanks!

@ojw28 ojw28 closed this as completed Oct 3, 2016
@HSY229 HSY229 mentioned this issue Oct 7, 2016
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