Add a mapping for the V4L2_PIX_FMT_NV12 format to PIX_FMT_NV12 for

video4linux2 devices. This is used by Sensoray Model 2253 cards.
Patch by Pete Eberlein (pete AT sensoray DOT com)

Originally committed as revision 24759 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavdevice/v4l2.c

@@ -138,6 +138,11 @@ static struct fmt_map fmt_conversion_table[] = {
         .codec_id = CODEC_ID_RAWVIDEO,
         .v4l2_fmt = V4L2_PIX_FMT_GREY,
     },
+    {
+        .ff_fmt = PIX_FMT_NV12,
+        .codec_id = CODEC_ID_RAWVIDEO,
+        .v4l2_fmt = V4L2_PIX_FMT_NV12,
+    },
     {
         .ff_fmt = PIX_FMT_NONE,
         .codec_id = CODEC_ID_MJPEG,