Video not loading when using piped-bg-helper-server

[mdbraber]

Steps to reproduce

Instructions using Docker:

3. Install piped-bg-helper-server:Add to your docker-compose.yml:

piped-bg-helper-server:
  image: 1337kavin/bg-helper-server:latest
  container_name: piped-bg-helper-server

Add to Piped-Docker/config/config.properties:

BG_HELPER_URL:http://piped-bg-helper-server:3000

2. Restart docker containers

docker compose down && docker compose up -d 

3. Try to load a video in LibreTube

Expected behavior

Video should load

Actual behavior

Video gives a "Network error" (using HLS) or a "Source error" with DASH

LibreTube version

0.26.0 (58)

Android version

Android 12

Other details

Error from the Android Studio debugger:

2025-01-17 20:58:45.531  8426-8792  LoadTask                com.github.libretube.debug           E  Unexpected exception loading stream
                                                                                                      java.lang.ArrayIndexOutOfBoundsException: src.length=65536 srcPos=-542817018 dst.length=65536 dstPos=0 length=542817018
                                                                                                          at java.lang.System.arraycopy(Native Method)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.updatePeekBuffer(DefaultExtractorInput.java:266)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.skipFromPeekBuffer(DefaultExtractorInput.java:232)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.skipFully(DefaultExtractorInput.java:105)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.skipFully(DefaultExtractorInput.java:117)
                                                                                                          at androidx.media3.extractor.mkv.DefaultEbmlReader.read(DefaultEbmlReader.java:149)
                                                                                                          at androidx.media3.extractor.mkv.MatroskaExtractor.read(MatroskaExtractor.java:594)
                                                                                                          at androidx.media3.exoplayer.source.chunk.BundledChunkExtractor.read(BundledChunkExtractor.java:241)
                                                                                                          at androidx.media3.exoplayer.source.chunk.ContainerMediaChunk.load(ContainerMediaChunk.java:132)
                                                                                                          at androidx.media3.exoplayer.upstream.Loader$LoadTask.run(Loader.java:421)
                                                                                                          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
                                                                                                          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
                                                                                                          at java.lang.Thread.run(Thread.java:920)
2025-01-17 20:58:45.549  8426-8694  ExoPlayerImplInternal   com.github.libretube.debug           E  Playback error
                                                                                                      androidx.media3.exoplayer.ExoPlaybackException: Source error
                                                                                                          at androidx.media3.exoplayer.ExoPlayerImplInternal.handleIoException(ExoPlayerImplInternal.java:736)
                                                                                                          at androidx.media3.exoplayer.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:712)
                                                                                                          at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                                          at android.os.Looper.loopOnce(Looper.java:201)
                                                                                                          at android.os.Looper.loop(Looper.java:288)
                                                                                                          at android.os.HandlerThread.run(HandlerThread.java:67)
                                                                                                      Caused by: androidx.media3.exoplayer.upstream.Loader$UnexpectedLoaderException: Unexpected ArrayIndexOutOfBoundsException: src.length=65536 srcPos=-542817018 dst.length=65536 dstPos=0 length=542817018
                                                                                                          at androidx.media3.exoplayer.upstream.Loader$LoadTask.run(Loader.java:442)
                                                                                                          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
                                                                                                          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
                                                                                                          at java.lang.Thread.run(Thread.java:920)
                                                                                                      Caused by: java.lang.ArrayIndexOutOfBoundsException: src.length=65536 srcPos=-542817018 dst.length=65536 dstPos=0 length=542817018
                                                                                                          at java.lang.System.arraycopy(Native Method)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.updatePeekBuffer(DefaultExtractorInput.java:266)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.skipFromPeekBuffer(DefaultExtractorInput.java:232)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.skipFully(DefaultExtractorInput.java:105)
                                                                                                          at androidx.media3.extractor.DefaultExtractorInput.skipFully(DefaultExtractorInput.java:117)
                                                                                                          at androidx.media3.extractor.mkv.DefaultEbmlReader.read(DefaultEbmlReader.java:149)
                                                                                                          at androidx.media3.extractor.mkv.MatroskaExtractor.read(MatroskaExtractor.java:594)
                                                                                                          at androidx.media3.exoplayer.source.chunk.BundledChunkExtractor.read(BundledChunkExtractor.java:241)
                                                                                                          at androidx.media3.exoplayer.source.chunk.ContainerMediaChunk.load(ContainerMediaChunk.java:132)
                                                                                                          at androidx.media3.exoplayer.upstream.Loader$LoadTask.run(Loader.java:421)
                                                                                                          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 
                                                                                                          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 
                                                                                                          at java.lang.Thread.run(Thread.java:920) 

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[FineFindus]

I've implemented PoToken support in my fork, using the NewPipeExtractor fork from Piped, and I can't reproduce this error. Maybe the Piped server is parsing/sending the playback chunks incorrectly?

[mdbraber]

@FineFindus I've cherry-picked the commit in your fork but I'm getting exactly the same errors so I'm not sure what's going on. This is suspicious to me:

java.lang.ArrayIndexOutOfBoundsException: src.length=65536 srcPos=-542817018 dst.length=65536 dstPos=0 length=542817018

It seems that length is wrong? Or that src.length is limited to a max as it suspicious that it seems like some kind of upper value.

[mdbraber]

@FineFindus it seems that also my pre-PoToken version was nit working with DASH, only HLS. What Piped (Backend) version are you using on your instance?

[FineFindus]

I've cherry-picked the commit in your fork

Have you added a PoToken and enabled local feed extraction? I don't think the LocalFeedRepository is loaded otherwise and therefore the PoTokenProvider not set.

[mdbraber]

Ah wait, you're not using an instance as you've built a 'local feed extraction' that works without an instance? No I've not done that but I could - interesting add-on (if I'm getting it right).

What seems to work with a Piped instance is to (re)enable ump and srfvp that were disabled in this PR TeamPiped/Piped-Backend#791. That makes LibreTube work again and also web and Yattee seem to still work. I haven't exhaustively tested but I think Yattee might sometimes jump around which could be related to TeamPiped/Piped#2517

I'm not sure if this is the best solution, maybe ump should be enabled just for Android which might be related to ytproxy and this issue TeamPiped/piped-proxy#238

@FireMasterK can you elaborate whether (re)enabling ump and srfvp is a good solution for Piped-Backend? @Bnyro mentioned it might make fingerprinting easier as YT clients don't use them. Any suggestions?