mxfenc: Add support for MPEG-2 MP@HL-14 in mxf container

Support Main Profile at High 1440 Level in MXF container,
using essence coding label from SMPTE RDD 9, table 6.

libavformat/mxfenc.c

@@ -1287,6 +1287,8 @@ static const UID mxf_mpeg2_codec_uls[] = {
     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
+    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
+    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
 };
 
 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
@@ -1298,6 +1300,8 @@ static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
             return &mxf_mpeg2_codec_uls[0+long_gop];
         else if (avctx->level == 4) // High
             return &mxf_mpeg2_codec_uls[4+long_gop];
+        else if (avctx->level == 6) // High 14
+            return &mxf_mpeg2_codec_uls[8+long_gop];
     } else if (avctx->profile == 0) { // 422
         if (avctx->level == 5) // Main
             return &mxf_mpeg2_codec_uls[2+long_gop];