From d32d8c0da654143a879bc6f8b030c8e5b32c7c60 Mon Sep 17 00:00:00 2001
From: Haibo Chen <nmgchenhaibo@foxmail.com>
Date: Thu, 1 Jul 2021 06:22:16 +0800
Subject: [PATCH] update channel_layout by channels, for ffmpeg transcode opus
 to aac success (#2452)

---
 trunk/src/app/srs_app_rtc_codec.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/trunk/src/app/srs_app_rtc_codec.cpp b/trunk/src/app/srs_app_rtc_codec.cpp
index d38560846..f04757f85 100644
--- a/trunk/src/app/srs_app_rtc_codec.cpp
+++ b/trunk/src/app/srs_app_rtc_codec.cpp
@@ -147,6 +147,8 @@ srs_error_t SrsAudioTranscoder::init_dec(SrsAudioCodecId src_codec)
     if (avcodec_open2(dec_, codec, NULL) < 0) {
         return srs_error_new(ERROR_RTC_RTP_MUXER, "Could not open codec");
     }
+    
+    dec_->channel_layout = av_get_default_channel_layout(dec_->channels);
 
     dec_frame_ = av_frame_alloc();
     if (!dec_frame_) {