[Bug] NicoNico videos fail to play due to a JsonParserException

[Mirairen]

Checklist

• I make sure that the issue is NOT a duplicate of pinned issues
• I make sure I am using the LATEST version - check here
• I understand that issues with limited impact, such as those occurring on specific devices or under specific network conditions, will not be fixed
• I have attached the error report in the issue

Version

4.7

Describe the bug

Recently I've been getting an error, a day ago it was fine.
I can click refresh till I get the video to work, but I'll have to do that for every video.

Frequency

Always (100% of the time)

Device

Galaxy Tab A9+, version 14

Steps to reproduce the bug

• Click any Nico video
• Error occurs

Additional context

Exception

• User Action: requested stream
• Request: https://www.nicovideo.jp/watch/sm45824467
• Content Country: JP
• Content Language: ja
• App Language: en_US
• Service: NicoNico (Anonymous)
• Version: 4.7.7
• OS: Linux Android 14 - 34

Crash log

java.lang.RuntimeException: com.grack.nanojson.JsonParserException: Unexpected character: � on line 1, char 1
	at org.schabi.newpipe.extractor.services.niconico.extractors.NiconicoStreamExtractor.onFetchPage(NiconicoStreamExtractor.java:418)
	at org.schabi.newpipe.extractor.Extractor.fetchPage(Extractor.java:60)
	at org.schabi.newpipe.extractor.stream.StreamInfo.getInfo(StreamInfo.java:93)
	at org.schabi.newpipe.extractor.stream.StreamInfo.getInfo(StreamInfo.java:88)
	at org.schabi.newpipe.util.ExtractorHelper.getNewStreamInfo(ExtractorHelper.java:132)
	at org.schabi.newpipe.util.ExtractorHelper.lambda$getStreamInfo$3(ExtractorHelper.java:127)
	at org.schabi.newpipe.util.ExtractorHelper.$r8$lambda$YTHJjScxCJNO1LTCqs3IKy35iyY(Unknown Source:0)
	at org.schabi.newpipe.util.ExtractorHelper$$ExternalSyntheticLambda5.call(Unknown Source:4)
	at io.reactivex.rxjava3.internal.operators.single.SingleFromCallable.subscribeActual(SingleFromCallable.java:43)
	at io.reactivex.rxjava3.core.Single.subscribe(Single.java:4813)
	at io.reactivex.rxjava3.internal.operators.single.SingleDoOnSuccess.subscribeActual(SingleDoOnSuccess.java:35)
	at io.reactivex.rxjava3.core.Single.subscribe(Single.java:4813)
	at io.reactivex.rxjava3.internal.operators.maybe.MaybeFromSingle.subscribeActual(MaybeFromSingle.java:41)
	at io.reactivex.rxjava3.core.Maybe.subscribe(Maybe.java:5330)
	at io.reactivex.rxjava3.internal.operators.maybe.MaybeConcatArray$ConcatMaybeObserver.drain(MaybeConcatArray.java:153)
	at io.reactivex.rxjava3.internal.operators.maybe.MaybeConcatArray$ConcatMaybeObserver.request(MaybeConcatArray.java:78)
	at io.reactivex.rxjava3.internal.operators.flowable.FlowableElementAtMaybe$ElementAtSubscriber.onSubscribe(FlowableElementAtMaybe.java:66)
	at io.reactivex.rxjava3.internal.operators.maybe.MaybeConcatArray.subscribeActual(MaybeConcatArray.java:42)
	at io.reactivex.rxjava3.core.Flowable.subscribe(Flowable.java:15868)
	at io.reactivex.rxjava3.internal.operators.flowable.FlowableElementAtMaybe.subscribeActual(FlowableElementAtMaybe.java:36)
	at io.reactivex.rxjava3.core.Maybe.subscribe(Maybe.java:5330)
	at io.reactivex.rxjava3.internal.operators.maybe.MaybeToSingle.subscribeActual(MaybeToSingle.java:46)
	at io.reactivex.rxjava3.core.Single.subscribe(Single.java:4813)
	at io.reactivex.rxjava3.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
	at io.reactivex.rxjava3.core.Scheduler$DisposeTask.run(Scheduler.java:644)
	at io.reactivex.rxjava3.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:65)
	at io.reactivex.rxjava3.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:56)
	at java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at java.lang.Thread.run(Thread.java:1012)
Caused by: com.grack.nanojson.JsonParserException: Unexpected character: � on line 1, char 1
	at com.grack.nanojson.JsonTokener.createParseException(Unknown Source:44)
	at com.grack.nanojson.JsonTokener.advanceToToken(Unknown Source:118)
	at com.grack.nanojson.JsonParser.advanceToken(Unknown Source:12)
	at com.grack.nanojson.JsonParser.parse(Unknown Source:1)
	at com.grack.nanojson.JsonParser$JsonParserContext.from(Unknown Source:19)
	at org.schabi.newpipe.extractor.services.niconico.extractors.NiconicoStreamExtractor.onFetchPage(NiconicoStreamExtractor.java:402)
	... 31 more

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[chikuwadon]

Hi, I can confirm the same issue on my side.
I’m using PipePipe v4.7.7 on a Galaxy S23 Ultra (Android 15) and I’m getting this error:

JsonParserException: Unexpected character: � on line 1, char 1

It happens when trying to open NicoNico videos.
Thanks for investigating.

[Mirairen]

It seems I can no longer refresh to watch the video.
However after checking the beta version of this app.
It does work, but I have different issue with it now.
Especially viewing method.

[InfinityLoop1308]

Please use the 5.0 beta version at this time, we are busy fixing all the issues and plan to release it soon (hopefully in 1-2 weeks)