add frame layout local tag, best effort

Originally committed as revision 16896 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mxfenc.c

@@ -173,6 +173,7 @@ static const MXFLocalTagPair mxf_local_tag_batch[] = {
     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
     // Generic Picture Essence Descriptor
+    { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
@@ -589,7 +590,7 @@ static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
     int stored_height = (st->codec->height+15)/16*16;
     AVRational dar;
 
-    mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key, 108);
+    mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key, 113);
 
     mxf_write_local_tag(pb, 4, 0x3203);
     put_be32(pb, st->codec->width);
@@ -597,6 +598,10 @@ static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
     mxf_write_local_tag(pb, 4, 0x3202);
     put_be32(pb, stored_height>>sc->interlaced);
 
+    // frame layout
+    mxf_write_local_tag(pb, 1, 0x320C);
+    put_byte(pb, sc->interlaced);
+
     av_reduce(&dar.num, &dar.den,
               st->codec->width*st->codec->sample_aspect_ratio.num,
               st->codec->height*st->codec->sample_aspect_ratio.den,