diff --git a/src/codecs/foxenflac.cpp b/src/codecs/foxenflac.cpp
index b378e47e..282b8ce1 100644
--- a/src/codecs/foxenflac.cpp
+++ b/src/codecs/foxenflac.cpp
@@ -64,7 +64,7 @@ auto FoxenFlacDecoder::OpenStream(std::shared_ptr<IStream> input)
 
   uint64_t num_samples = fx_flac_get_streaminfo(flac_, FLAC_KEY_N_SAMPLES);
   if (num_samples > 0) {
-    format.total_samples = num_samples;
+    format.total_samples = num_samples * channels;
   }
 
   return format;
diff --git a/src/codecs/vorbis.cpp b/src/codecs/vorbis.cpp
index f553bb42..764f58d9 100644
--- a/src/codecs/vorbis.cpp
+++ b/src/codecs/vorbis.cpp
@@ -121,7 +121,7 @@ auto TremorVorbisDecoder::OpenStream(std::shared_ptr<IStream> input)
   auto l = ov_pcm_total(&vorbis_, -1);
   std::optional<uint32_t> length;
   if (l > 0) {
-    length = l;
+    length = l * info->channels;
   }
 
   return OutputFormat{