X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavdevice%2Fdshow.c;h=25481580af3903672a20d380e902420e9315df5a;hb=7ca2ee059e3d3e170a8e119af10649671c524112;hp=de910c09943440475d23e3c13f5f0b693b09324a;hpb=20608261f7818fc034f96034a089e755f095716e;p=ffmpeg

diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c
index de910c09943..25481580af3 100644
--- a/libavdevice/dshow.c
+++ b/libavdevice/dshow.c
@@ -996,10 +996,14 @@ dshow_add_device(AVFormatContext *avctx,
             par->codec_id = AV_CODEC_ID_RAWVIDEO;
             if (bih->biCompression == BI_RGB || bih->biCompression == BI_BITFIELDS) {
                 par->bits_per_coded_sample = bih->biBitCount;
-                par->extradata = av_malloc(9 + AV_INPUT_BUFFER_PADDING_SIZE);
-                if (par->extradata) {
-                    par->extradata_size = 9;
-                    memcpy(par->extradata, "BottomUp", 9);
+                if (par->height < 0) {
+                    par->height *= -1;
+                } else {
+                    par->extradata = av_malloc(9 + AV_INPUT_BUFFER_PADDING_SIZE);
+                    if (par->extradata) {
+                        par->extradata_size = 9;
+                        memcpy(par->extradata, "BottomUp", 9);
+                    }
                 }
             }
         }