Fixed support for NVIDIA Codec SDK 11.x

Author: asmorkalov

modules/cudacodec/src/video_writer.cpp

@@ -236,6 +236,9 @@ GUID CodecGuid(const Codec codec) {
     switch (codec) {
     case Codec::H264: return NV_ENC_CODEC_H264_GUID;
     case Codec::HEVC: return NV_ENC_CODEC_HEVC_GUID;
+#if (NVENCAPI_MAJOR_VERSION >= 12)
+    case Codec::AV1: return NV_ENC_CODEC_AV1_GUID;
+#endif
     default: break;
     }
     std::string msg = "Unknown codec: cudacodec::VideoWriter only supports CODEC_VW::H264 and CODEC_VW::HEVC";
@@ -318,7 +321,9 @@ GUID EncodingPresetGuid(const EncodePreset nvPreset) {
 std::string GetVideoCodecString(const GUID codec) {
     if (codec == NV_ENC_CODEC_H264_GUID) return "AVC/H.264";
     else if (codec == NV_ENC_CODEC_HEVC_GUID) return "H.265/HEVC";
+#if (NVENCAPI_MAJOR_VERSION >= 12)
     else if (codec == NV_ENC_CODEC_AV1_GUID) return "AV1";
+#endif
     else return "Unknown";
 }