diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c
index 004351296b..81666c5149 100644
--- a/libavcodec/alsdec.c
+++ b/libavcodec/alsdec.c
@@ -1292,13 +1292,13 @@ static int revert_channel_correlation(ALSDecContext *ctx, ALSBlockData *bd,
             if (ch[dep].time_diff_sign) {
                 t      = -t;
                 if (begin < t) {
-                    av_log(ctx->avctx, AV_LOG_ERROR, "begin %td smaller than time diff index %d.\n", begin, t);
+                    av_log(ctx->avctx, AV_LOG_ERROR, "begin %"PTRDIFF_SPECIFIER" smaller than time diff index %d.\n", begin, t);
                     return AVERROR_INVALIDDATA;
                 }
                 begin -= t;
             } else {
                 if (end < t) {
-                    av_log(ctx->avctx, AV_LOG_ERROR, "end %td smaller than time diff index %d.\n", end, t);
+                    av_log(ctx->avctx, AV_LOG_ERROR, "end %"PTRDIFF_SPECIFIER" smaller than time diff index %d.\n", end, t);
                     return AVERROR_INVALIDDATA;
                 }
                 end   -= t;
diff --git a/libavcodec/g2meet.c b/libavcodec/g2meet.c
index 51e8bbcd7b..b0af3ec046 100644
--- a/libavcodec/g2meet.c
+++ b/libavcodec/g2meet.c
@@ -900,7 +900,7 @@ static int epic_jb_decode_tile(G2MContext *c, int tile_x, int tile_y,
     }
 
     if (src_size < els_dsize) {
-        av_log(avctx, AV_LOG_ERROR, "ePIC: data too short, needed %zu, got %zu\n",
+        av_log(avctx, AV_LOG_ERROR, "ePIC: data too short, needed %"SIZE_SPECIFIER", got %"SIZE_SPECIFIER"\n",
                els_dsize, src_size);
         return AVERROR_INVALIDDATA;
     }
diff --git a/libavcodec/hq_hqa.c b/libavcodec/hq_hqa.c
index 3ef83d4eb4..8825f3d8b7 100644
--- a/libavcodec/hq_hqa.c
+++ b/libavcodec/hq_hqa.c
@@ -154,7 +154,7 @@ static int hq_decode_frame(HQContext *ctx, AVFrame *pic,
             slice_off[slice] >= slice_off[slice + 1] ||
             slice_off[slice + 1] > data_size) {
             av_log(ctx->avctx, AV_LOG_ERROR,
-                   "Invalid slice size %zu.\n", data_size);
+                   "Invalid slice size %"SIZE_SPECIFIER".\n", data_size);
             break;
         }
         init_get_bits(&gb, src + slice_off[slice],
@@ -277,7 +277,7 @@ static int hqa_decode_frame(HQContext *ctx, AVFrame *pic, size_t data_size)
             slice_off[slice] >= slice_off[slice + 1] ||
             slice_off[slice + 1] > data_size) {
             av_log(ctx->avctx, AV_LOG_ERROR,
-                   "Invalid slice size %zu.\n", data_size);
+                   "Invalid slice size %"SIZE_SPECIFIER".\n", data_size);
             break;
         }
         init_get_bits(&gb, src + slice_off[slice],
diff --git a/libavformat/http.c b/libavformat/http.c
index ae77b646f7..f18d9e28a1 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -370,7 +370,7 @@ static int http_write_reply(URLContext* h, int status_code)
         message_len = snprintf(message, sizeof(message),
                  "HTTP/1.1 %03d %s\r\n"
                  "Content-Type: %s\r\n"
-                 "Content-Length: %zu\r\n"
+                 "Content-Length: %"SIZE_SPECIFIER"\r\n"
                  "\r\n"
                  "%03d %s\r\n",
                  reply_code,
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 752bc129a6..4f446ba8cd 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -4209,7 +4209,7 @@ static int mov_seek_auxiliary_info(AVFormatContext *s, MOVStreamContext *sc)
         auxiliary_info_seek_offset = sc->cenc.auxiliary_info_default_size * sc->current_sample;
     } else if (sc->cenc.auxiliary_info_sizes) {
         if (sc->current_sample > sc->cenc.auxiliary_info_sizes_count) {
-            av_log(s, AV_LOG_ERROR, "current sample %d greater than the number of auxiliary info sample sizes %zu\n",
+            av_log(s, AV_LOG_ERROR, "current sample %d greater than the number of auxiliary info sample sizes %"SIZE_SPECIFIER"\n",
                 sc->current_sample, sc->cenc.auxiliary_info_sizes_count);
             return AVERROR_INVALIDDATA;
         }
@@ -4220,7 +4220,7 @@ static int mov_seek_auxiliary_info(AVFormatContext *s, MOVStreamContext *sc)
     }
 
     if (auxiliary_info_seek_offset > sc->cenc.auxiliary_info_end - sc->cenc.auxiliary_info) {
-        av_log(s, AV_LOG_ERROR, "auxiliary info offset %zu greater than auxiliary info size %zu\n",
+        av_log(s, AV_LOG_ERROR, "auxiliary info offset %"SIZE_SPECIFIER" greater than auxiliary info size %"SIZE_SPECIFIER"\n",
             auxiliary_info_seek_offset, (size_t)(sc->cenc.auxiliary_info_end - sc->cenc.auxiliary_info));
         return AVERROR_INVALIDDATA;
     }
diff --git a/libavformat/mpjpegdec.c b/libavformat/mpjpegdec.c
index 4c2a46ba74..6f85e5620f 100644
--- a/libavformat/mpjpegdec.c
+++ b/libavformat/mpjpegdec.c
@@ -201,7 +201,7 @@ static int parse_multipart_header(AVIOContext *pb,
         if (log_ctx)
         av_log(log_ctx,
             AV_LOG_ERROR,
-            "Expected boundary '%s' not found, instead found a line of %zu bytes\n",
+            "Expected boundary '%s' not found, instead found a line of %"SIZE_SPECIFIER" bytes\n",
             expected_boundary,
             strlen(line));