From e960a417eca05af1ce842e5e90b9e1456e918862 Mon Sep 17 00:00:00 2001
From: AudricV <74829229+AudricV@users.noreply.github.com>
Date: Thu, 16 Jun 2022 11:04:24 +0200
Subject: [PATCH] [YouTube] Fix extraction of fps, audioSampleRate and
 audioChannels fields for ItagItems of live streams and post live streams

These values were only set before for video streams.

A fallback for the audio channels count has been added, in order to prevent exceptions when generating DASH manifests of audio streams: the fallback value is 2, because most audio streams on YouTube have 2 audio channels.
---
 .../youtube/extractors/YoutubeStreamExtractor.java  | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java b/extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java
index a41325f3..3fdd69bf 100644
--- a/extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java
+++ b/extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java
@@ -1358,13 +1358,20 @@ public class YoutubeStreamExtractor extends StreamExtractor {
 
         if (streamType == StreamType.LIVE_STREAM || streamType == StreamType.POST_LIVE_STREAM) {
             itagItem.setTargetDurationSec(formatData.getInt("targetDurationSec"));
-        } else if (itagType == ItagItem.ItagType.VIDEO
-                || itagType == ItagItem.ItagType.VIDEO_ONLY) {
+        }
+
+        if (itagType == ItagItem.ItagType.VIDEO || itagType == ItagItem.ItagType.VIDEO_ONLY) {
             itagItem.setFps(formatData.getInt("fps"));
         } else if (itagType == ItagItem.ItagType.AUDIO) {
             // YouTube return the audio sample rate as a string
             itagItem.setSampleRate(Integer.parseInt(formatData.getString("audioSampleRate")));
-            itagItem.setAudioChannels(formatData.getInt("audioChannels"));
+            itagItem.setAudioChannels(formatData.getInt("audioChannels",
+                    // Most audio streams have two audio channels, so use this value if the real
+                    // count cannot be extracted
+                    // Doing this prevents an exception when generating the
+                    // AudioChannelConfiguration element of DASH manifests of audio streams in
+                    // YoutubeDashManifestCreatorUtils
+                    2));
         }
 
         // YouTube return the content length and the approximate duration as strings