diff --git a/libavcodec/pnm.c b/libavcodec/pnm.c
index 77d24eeaf7..796807da23 100644
--- a/libavcodec/pnm.c
+++ b/libavcodec/pnm.c
@@ -97,10 +97,12 @@ int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s)
     } else if (s->type==1 || s->type==4) {
         avctx->pix_fmt = AV_PIX_FMT_MONOWHITE;
     } else if (s->type==2 || s->type==5) {
-        if (avctx->codec_id == AV_CODEC_ID_PGMYUV)
+        if (avctx->codec_id == AV_CODEC_ID_PGMYUV) {
             avctx->pix_fmt = AV_PIX_FMT_YUV420P;
-        else
+            avctx->color_range = AVCOL_RANGE_MPEG;
+        } else {
             avctx->pix_fmt = AV_PIX_FMT_GRAY8;
+        }
     } else if (s->type==3 || s->type==6) {
         avctx->pix_fmt = AV_PIX_FMT_RGB24;
     } else if (s->type==7) {
@@ -240,5 +242,6 @@ int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s)
         h /= 3;
         avctx->height = h;
     }
+
     return 0;
 }
diff --git a/tests/ref/lavf/mkv b/tests/ref/lavf/mkv
index a8c3fd13e8..5a3c3b931e 100644
--- a/tests/ref/lavf/mkv
+++ b/tests/ref/lavf/mkv
@@ -1,3 +1,3 @@
-6224bc0893bd0bb8a789e74bbd38c9c7 *tests/data/lavf/lavf.mkv
-320440 tests/data/lavf/lavf.mkv
+dd709c2b5e173eaca39cdd4a10aac3ec *tests/data/lavf/lavf.mkv
+320447 tests/data/lavf/lavf.mkv
 tests/data/lavf/lavf.mkv CRC=0xec6c3c68
diff --git a/tests/ref/lavf/mkv_attachment b/tests/ref/lavf/mkv_attachment
index 4c958af162..1a086a4f24 100644
--- a/tests/ref/lavf/mkv_attachment
+++ b/tests/ref/lavf/mkv_attachment
@@ -1,3 +1,3 @@
-05132b99d16128e552c1a6f1619be8b7 *tests/data/lavf/lavf.mkv_attachment
-472590 tests/data/lavf/lavf.mkv_attachment
+7cd7b06892b74d66da217c8dda90bfac *tests/data/lavf/lavf.mkv_attachment
+472597 tests/data/lavf/lavf.mkv_attachment
 tests/data/lavf/lavf.mkv_attachment CRC=0xec6c3c68
diff --git a/tests/ref/lavf/mxf b/tests/ref/lavf/mxf
index fdd1ef5c9c..4cf3388afa 100644
--- a/tests/ref/lavf/mxf
+++ b/tests/ref/lavf/mxf
@@ -1,9 +1,9 @@
-9ec1ad83b3400de11ca2f70b3b2d4c4d *tests/data/lavf/lavf.mxf
+fac1fb467168a374e96ea12755558869 *tests/data/lavf/lavf.mxf
 526393 tests/data/lavf/lavf.mxf
 tests/data/lavf/lavf.mxf CRC=0x8dddfaab
-3edfabe839a29f5902969c15ebac6d8d *tests/data/lavf/lavf.mxf
+d711481c4f81f6466fd92bdc7ed6c968 *tests/data/lavf/lavf.mxf
 551481 tests/data/lavf/lavf.mxf
 tests/data/lavf/lavf.mxf CRC=0xf091e687
-5bd0ce691510e6fae969886c32ad7a14 *tests/data/lavf/lavf.mxf
+7f4f8048c4f2d714e45947d4f39b8ea3 *tests/data/lavf/lavf.mxf
 526393 tests/data/lavf/lavf.mxf
 tests/data/lavf/lavf.mxf CRC=0x8dddfaab
diff --git a/tests/ref/lavf/y4m b/tests/ref/lavf/y4m
index 82c7087673..3c3fa830ad 100644
--- a/tests/ref/lavf/y4m
+++ b/tests/ref/lavf/y4m
@@ -1,3 +1,3 @@
-ec8178cb152f9cdbfd9cb724d977db2e *tests/data/lavf/lavf.y4m
-3801808 tests/data/lavf/lavf.y4m
+54f4ebcffedc886835444bb9d6aba3fb *tests/data/lavf/lavf.y4m
+3801828 tests/data/lavf/lavf.y4m
 tests/data/lavf/lavf.y4m CRC=0x0a941f26
diff --git a/tests/ref/seek/lavf-mkv b/tests/ref/seek/lavf-mkv
index b8028dd075..e327959058 100644
--- a/tests/ref/seek/lavf-mkv
+++ b/tests/ref/seek/lavf-mkv
@@ -1,48 +1,48 @@
-ret: 0         st: 1 flags:1 dts:-0.011000 pts:-0.011000 pos:    682 size:   208
+ret: 0         st: 1 flags:1 dts:-0.011000 pts:-0.011000 pos:    689 size:   208
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292314 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292321 size: 27834
 ret: 0         st: 0 flags:0  ts: 0.788000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292314 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292321 size: 27834
 ret: 0         st: 0 flags:1  ts:-0.317000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
 ret:-1         st: 1 flags:0  ts: 2.577000
 ret: 0         st: 1 flags:1  ts: 1.471000
-ret: 0         st: 1 flags:1 dts: 0.982000 pts: 0.982000 pos: 320158 size:   209
+ret: 0         st: 1 flags:1 dts: 0.982000 pts: 0.982000 pos: 320165 size:   209
 ret: 0         st:-1 flags:0  ts: 0.365002
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146866 size: 27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146873 size: 27925
 ret: 0         st:-1 flags:1  ts:-0.740831
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
 ret:-1         st: 0 flags:0  ts: 2.153000
 ret: 0         st: 0 flags:1  ts: 1.048000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292314 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292321 size: 27834
 ret: 0         st: 1 flags:0  ts:-0.058000
-ret: 0         st: 1 flags:1 dts:-0.011000 pts:-0.011000 pos:    682 size:   208
+ret: 0         st: 1 flags:1 dts:-0.011000 pts:-0.011000 pos:    689 size:   208
 ret: 0         st: 1 flags:1  ts: 2.836000
-ret: 0         st: 1 flags:1 dts: 0.982000 pts: 0.982000 pos: 320158 size:   209
+ret: 0         st: 1 flags:1 dts: 0.982000 pts: 0.982000 pos: 320165 size:   209
 ret:-1         st:-1 flags:0  ts: 1.730004
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146866 size: 27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146873 size: 27925
 ret: 0         st: 0 flags:0  ts:-0.482000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
 ret: 0         st: 0 flags:1  ts: 2.413000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292314 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292321 size: 27834
 ret:-1         st: 1 flags:0  ts: 1.307000
 ret: 0         st: 1 flags:1  ts: 0.201000
-ret: 0         st: 1 flags:1 dts:-0.011000 pts:-0.011000 pos:    682 size:   208
+ret: 0         st: 1 flags:1 dts:-0.011000 pts:-0.011000 pos:    689 size:   208
 ret: 0         st:-1 flags:0  ts:-0.904994
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
 ret: 0         st:-1 flags:1  ts: 1.989173
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292314 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292321 size: 27834
 ret: 0         st: 0 flags:0  ts: 0.883000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292314 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 292321 size: 27834
 ret: 0         st: 0 flags:1  ts:-0.222000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
 ret:-1         st: 1 flags:0  ts: 2.672000
 ret: 0         st: 1 flags:1  ts: 1.566000
-ret: 0         st: 1 flags:1 dts: 0.982000 pts: 0.982000 pos: 320158 size:   209
+ret: 0         st: 1 flags:1 dts: 0.982000 pts: 0.982000 pos: 320165 size:   209
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146866 size: 27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146873 size: 27925
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    898 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    905 size: 27837
diff --git a/tests/ref/seek/lavf-y4m b/tests/ref/seek/lavf-y4m
index c416b4657b..67793ea40c 100644
--- a/tests/ref/seek/lavf-y4m
+++ b/tests/ref/seek/lavf-y4m
@@ -1,19 +1,19 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     64 size:152064
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     84 size:152064
 ret:-1         st:-1 flags:0  ts:-1.000000
 ret: 0         st:-1 flags:1  ts: 1.894167
 ret:-EOF
 ret: 0         st: 0 flags:0  ts: 0.800000
-ret: 0         st: 0 flags:1 dts: 0.800000 pts: 0.800000 pos:3041464 size:152064
+ret: 0         st: 0 flags:1 dts: 0.800000 pts: 0.800000 pos:3041484 size:152064
 ret: 0         st: 0 flags:1  ts:-0.320000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     64 size:152064
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     84 size:152064
 ret: 0         st:-1 flags:0  ts: 2.576668
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.470835
 ret:-EOF
 ret: 0         st: 0 flags:0  ts: 0.360000
-ret: 0         st: 0 flags:1 dts: 0.360000 pts: 0.360000 pos:1368694 size:152064
+ret: 0         st: 0 flags:1 dts: 0.360000 pts: 0.360000 pos:1368714 size:152064
 ret: 0         st: 0 flags:1  ts:-0.760000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     64 size:152064
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     84 size:152064
 ret: 0         st:-1 flags:0  ts: 2.153336
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.047503
@@ -24,26 +24,26 @@ ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.730004
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.600000 pts: 0.600000 pos:2281114 size:152064
+ret: 0         st: 0 flags:1 dts: 0.600000 pts: 0.600000 pos:2281134 size:152064
 ret:-1         st: 0 flags:0  ts:-0.480000
 ret: 0         st: 0 flags:1  ts: 2.400000
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.306672
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.160000 pts: 0.160000 pos: 608344 size:152064
+ret: 0         st: 0 flags:1 dts: 0.160000 pts: 0.160000 pos: 608364 size:152064
 ret:-1         st: 0 flags:0  ts:-0.920000
 ret: 0         st: 0 flags:1  ts: 2.000000
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.880000 pts: 0.880000 pos:3345604 size:152064
+ret: 0         st: 0 flags:1 dts: 0.880000 pts: 0.880000 pos:3345624 size:152064
 ret: 0         st:-1 flags:1  ts:-0.222493
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     64 size:152064
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     84 size:152064
 ret: 0         st: 0 flags:0  ts: 2.680000
 ret:-EOF
 ret: 0         st: 0 flags:1  ts: 1.560000
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:1824904 size:152064
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:1824924 size:152064
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     64 size:152064
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     84 size:152064
