diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 12d25b20ae..2eaa8cda9f 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -930,6 +930,7 @@ retry_duration:
         } else {
             AVCodecContext ctx = {0};
             ctx.sample_rate = sample_rate;
+            ctx.bits_per_coded_sample = bits_per_coded_sample;
             flv_set_audio_codec(s, st, &ctx, flags & FLV_AUDIO_CODECID_MASK);
             sample_rate = ctx.sample_rate;
         }