ensure that the aspect ratio is spec compliant

Originally committed as revision 10056 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago · 0a5790d1a9
parent 272872e44b
commit 0a5790d1a9
1 changed files with 8 additions and 2 deletions
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@ -301,8 +301,14 @@ static int write_streamheader(NUTContext *nut, ByteIOContext *bc, AVCodecContext
    case CODEC_TYPE_VIDEO:
        put_v(bc, codec->width);
        put_v(bc, codec->height);
-        put_v(bc, codec->sample_aspect_ratio.num);
-        put_v(bc, codec->sample_aspect_ratio.den);
+
+        if(codec->sample_aspect_ratio.num<=0 || codec->sample_aspect_ratio.den<=0){
+            put_v(bc, 0);
+            put_v(bc, 0);
+        }else{
+            put_v(bc, codec->sample_aspect_ratio.num);
+            put_v(bc, codec->sample_aspect_ratio.den);
+        }
        put_v(bc, 0); /* csp type -- unknown */
        break;
    default: