diff --git a/libavformat/audiointerleave.c b/libavformat/audiointerleave.c
index 7f580b970d..80bf768579 100644
--- a/libavformat/audiointerleave.c
+++ b/libavformat/audiointerleave.c
@@ -105,7 +105,7 @@ int ff_audio_rechunk_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt
                         int (*get_packet)(AVFormatContext *, AVPacket *, AVPacket *, int),
                         int (*compare_ts)(AVFormatContext *, AVPacket *, AVPacket *))
 {
-    int i;
+    int i, ret;
 
     if (pkt) {
         AVStream *st = s->streams[pkt->stream_index];
@@ -119,12 +119,10 @@ int ff_audio_rechunk_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt
             }
             av_fifo_generic_write(aic->fifo, pkt->data, pkt->size, NULL);
         } else {
-            int ret;
             // rewrite pts and dts to be decoded time line position
             pkt->pts = pkt->dts = aic->dts;
             aic->dts += pkt->duration;
-            ret = ff_interleave_add_packet(s, pkt, compare_ts);
-            if (ret < 0)
+            if ((ret = ff_interleave_add_packet(s, pkt, compare_ts)) < 0)
                 return ret;
         }
         pkt = NULL;
@@ -134,10 +132,8 @@ int ff_audio_rechunk_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt
         AVStream *st = s->streams[i];
         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
             AVPacket new_pkt;
-            int ret;
             while ((ret = interleave_new_audio_packet(s, &new_pkt, i, flush)) > 0) {
-                ret = ff_interleave_add_packet(s, &new_pkt, compare_ts);
-                if (ret < 0)
+                if ((ret = ff_interleave_add_packet(s, &new_pkt, compare_ts)) < 0)
                     return ret;
             }
             if (ret < 0)
diff --git a/libavformat/internal.h b/libavformat/internal.h
index 66fb5d64af..467e25d830 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -93,7 +93,7 @@ void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
  * @return 0, or < 0 on error
  */
 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
-                              int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
+                             int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
 
 void ff_read_frame_flush(AVFormatContext *s);
 
diff --git a/libavformat/mux.c b/libavformat/mux.c
index 687f7043da..308b255269 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -658,12 +658,12 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
 #define CHUNK_START 0x1000
 
 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
-                              int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
+                             int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
 {
+    int ret;
     AVPacketList **next_point, *this_pktl;
     AVStream *st   = s->streams[pkt->stream_index];
     int chunked    = s->max_chunk_size || s->max_chunk_duration;
-    int ret;
 
     this_pktl      = av_mallocz(sizeof(AVPacketList));
     if (!this_pktl)
@@ -681,7 +681,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
         av_assert0(pkt->size == UNCODED_FRAME_PACKET_SIZE);
         av_assert0(((AVFrame *)pkt->data)->buf);
     } else {
-        // duplicate the packet if it uses non-allocated memory
+        // Duplicate the packet if it uses non-allocated memory
         if ((ret = av_dup_packet(&this_pktl->pkt)) < 0) {
             av_free(this_pktl);
             return ret;
@@ -735,6 +735,7 @@ next_non_null:
 
     s->streams[pkt->stream_index]->last_in_packet_buffer =
         *next_point                                      = this_pktl;
+
     return 0;
 }
 
@@ -765,12 +766,12 @@ int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
                                  AVPacket *pkt, int flush)
 {
     AVPacketList *pktl;
-    int stream_count = 0, noninterleaved_count = 0;
+    int stream_count = 0;
+    int noninterleaved_count = 0;
     int i, ret;
 
     if (pkt) {
-        ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts);
-        if (ret < 0)
+        if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
             return ret;
     }