Improve an lclenc.c error message in case of unsupported input pixel

format.

Originally committed as revision 13811 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/lclenc.c

@@ -167,7 +167,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
             avctx->bits_per_sample= 24;
             break;
         default:
-            av_log(avctx, AV_LOG_ERROR, "Format %d not supported\n", avctx->pix_fmt);
+            av_log(avctx, AV_LOG_ERROR, "Input pixel format %s not supported\n", avcodec_get_pix_fmt_name(avctx->pix_fmt));
             return -1;
     }