diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 28cf8b719c..adaff4c5e9 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -1079,12 +1079,14 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
             avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
         } else { /* reserved for mp4/3gp */
             if (track->par->codec_id == AV_CODEC_ID_FLAC ||
+                track->par->codec_id == AV_CODEC_ID_ALAC ||
                 track->par->codec_id == AV_CODEC_ID_OPUS) {
                 avio_wb16(pb, track->par->channels);
             } else {
                 avio_wb16(pb, 2);
             }
-            if (track->par->codec_id == AV_CODEC_ID_FLAC) {
+            if (track->par->codec_id == AV_CODEC_ID_FLAC ||
+                track->par->codec_id == AV_CODEC_ID_ALAC) {
                 avio_wb16(pb, track->par->bits_per_raw_sample);
             } else {
                 avio_wb16(pb, 16);