avcodec/mjpegdec: add pix_fmt: 0x14121200

Fixes: _15801_F.jpg
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

libavcodec/mjpegdec.c

@@ -485,6 +485,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
             s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
         break;
     case 0x12111100:
+    case 0x14121200:
     case 0x22211100:
     case 0x22112100:
         if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;