X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fdvbsubdec.c;h=ce03e12d4a17f21a11d01667c01ac7724d3cf253;hb=d95fee4425285e90604cda48375069f5ef090ce3;hp=e3b72ab1ffd20d71290add37afea5363bfa60ea7;hpb=90696ef368819a1a0576c0c96ce4349dd726dd4f;p=ffmpeg

diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index e3b72ab1ffd..ce03e12d4a1 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -1606,6 +1606,7 @@ static int dvbsub_decode(AVCodecContext *avctx,
     int i;
     int ret = 0;
     int got_segment = 0;
+    int got_dds = 0;
 
     ff_dlog(avctx, "DVB sub packet:\n");
 
@@ -1668,9 +1669,15 @@ static int dvbsub_decode(AVCodecContext *avctx,
             case DVBSUB_DISPLAYDEFINITION_SEGMENT:
                 ret = dvbsub_parse_display_definition_segment(avctx, p,
                                                               segment_length);
+                got_dds = 1;
                 break;
             case DVBSUB_DISPLAY_SEGMENT:
                 ret = dvbsub_display_end_segment(avctx, p, segment_length, sub, data_size);
+                if (got_segment == 15 && !got_dds && !avctx->width && !avctx->height) {
+                    // Default from ETSI EN 300 743 V1.3.1 (7.2.1)
+                    avctx->width  = 720;
+                    avctx->height = 576;
+                }
                 got_segment |= 16;
                 break;
             default: