diff --git a/libavformat/iamf_writer.c b/libavformat/iamf_writer.c
index 9ed20fc562..18dc0e284b 100644
--- a/libavformat/iamf_writer.c
+++ b/libavformat/iamf_writer.c
@@ -979,7 +979,7 @@ static int write_parameter_block(const IAMFContext *iamf, AVIOContext *pb,
 }
 
 int ff_iamf_write_parameter_blocks(const IAMFContext *iamf, AVIOContext *pb,
-                                   AVPacket *pkt, void *log_ctx)
+                                   const AVPacket *pkt, void *log_ctx)
 {
     AVIAMFParamDefinition *mix =
         (AVIAMFParamDefinition *)av_packet_get_side_data(pkt,
@@ -1014,7 +1014,7 @@ int ff_iamf_write_parameter_blocks(const IAMFContext *iamf, AVIOContext *pb,
 }
 
 int ff_iamf_write_audio_frame(const IAMFContext *iamf, AVIOContext *pb,
-                              unsigned audio_substream_id, AVPacket *pkt)
+                              unsigned audio_substream_id, const AVPacket *pkt)
 {
     uint8_t header[MAX_IAMF_OBU_HEADER_SIZE];
     PutBitContext pbc;
diff --git a/libavformat/iamf_writer.h b/libavformat/iamf_writer.h
index 8e2949d8f2..05f3d322b8 100644
--- a/libavformat/iamf_writer.h
+++ b/libavformat/iamf_writer.h
@@ -35,8 +35,8 @@ int ff_iamf_add_mix_presentation(IAMFContext *iamf, const AVStreamGroup *stg, vo
 int ff_iamf_write_descriptors(const IAMFContext *iamf, AVIOContext *pb, void *log_ctx);
 
 int ff_iamf_write_parameter_blocks(const IAMFContext *iamf, AVIOContext *pb,
-                                   AVPacket *pkt, void *log_ctx);
+                                   const AVPacket *pkt, void *log_ctx);
 int ff_iamf_write_audio_frame(const IAMFContext *iamf, AVIOContext *pb,
-                              unsigned audio_substream_id, AVPacket *pkt);
+                              unsigned audio_substream_id, const AVPacket *pkt);
 
 #endif /* AVFORMAT_IAMF_WRITER_H */