diff --git a/libavcodec/libaomenc.c b/libavcodec/libaomenc.c
index 16747e7e92..f29cb0784a 100644
--- a/libavcodec/libaomenc.c
+++ b/libavcodec/libaomenc.c
@@ -1299,7 +1299,7 @@ static int aom_encode(AVCodecContext *avctx, AVPacket *pkt,
             duration = frame->duration;
         else if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
             duration = av_rescale_q(1, av_inv_q(avctx->framerate), avctx->time_base);
-        else
+        else {
 FF_DISABLE_DEPRECATION_WARNINGS
             duration =
 #if FF_API_TICKS_PER_FRAME
@@ -1307,6 +1307,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
 #endif
                 1;
 FF_ENABLE_DEPRECATION_WARNINGS
+        }
 
         switch (frame->color_range) {
         case AVCOL_RANGE_MPEG:
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index 549ac55aaa..7a545527a9 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -1830,7 +1830,7 @@ static int vpx_encode(AVCodecContext *avctx, AVPacket *pkt,
         duration = frame->duration;
     else if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
         duration = av_rescale_q(1, av_inv_q(avctx->framerate), avctx->time_base);
-    else
+    else {
 FF_DISABLE_DEPRECATION_WARNINGS
         duration =
 #if FF_API_TICKS_PER_FRAME
@@ -1838,6 +1838,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
 #endif
             1;
 FF_ENABLE_DEPRECATION_WARNINGS
+    }
 
     res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
                            duration, flags, ctx->deadline);
diff --git a/libavcodec/msmpeg4enc.c b/libavcodec/msmpeg4enc.c
index 9828901bea..a8ddb8d8e1 100644
--- a/libavcodec/msmpeg4enc.c
+++ b/libavcodec/msmpeg4enc.c
@@ -284,7 +284,7 @@ void ff_msmpeg4_encode_ext_header(MpegEncContext * s)
 
     if (s->avctx->framerate.num > 0 && s->avctx->framerate.den > 0)
         fps = s->avctx->framerate.num / s->avctx->framerate.den;
-    else
+    else {
 FF_DISABLE_DEPRECATION_WARNINGS
         fps = s->avctx->time_base.den / s->avctx->time_base.num
 #if FF_API_TICKS_PER_FRAME
@@ -292,6 +292,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
 #endif
             ;
 FF_ENABLE_DEPRECATION_WARNINGS
+    }
 
     put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29