diff --git a/format/riff/avi.go b/format/riff/avi.go
index 3d93b5d6..595d07af 100644
--- a/format/riff/avi.go
+++ b/format/riff/avi.go
@@ -575,8 +575,8 @@ func aviDecode(d *decode.D) any {
 						}
 
 						subSampleSize := int64(stream.sampleSize) * 8
-						// TODO: <= no format and <= 4*8 heuristics to not create separate pcm samples
-						if subSampleSize == 0 || (!stream.hasFormat && subSampleSize <= 4*8) {
+						// TODO: <= no format and <= 8*8 heuristics to not create separate pcm samples
+						if subSampleSize == 0 || (!stream.hasFormat && subSampleSize <= 8*8) {
 							subSampleSize = sr.Len
 						}