feat(nvenc): support intraRefresh for h264, add outputRecoveryPointSEI=1 to intra-refresh config for h264 and hevc (#5091)

Author: andygrundman

src/nvenc/nvenc_base.cpp

@@ -340,6 +340,21 @@ namespace nvenc {
           set_ref_frames(format_config.maxNumRefFrames, format_config.numRefL0, 5);
           set_minqp_if_enabled(config.min_qp_h264);
           fill_h264_hevc_vui(format_config.h264VUIParameters);
+          if (client_config.enableIntraRefresh == 1) {
+            if (get_encoder_cap(NV_ENC_CAPS_SUPPORT_INTRA_REFRESH)) {
+              format_config.enableIntraRefresh = 1;
+              format_config.intraRefreshPeriod = 300;
+              format_config.intraRefreshCnt = 299;
+              format_config.outputRecoveryPointSEI = 1;
+              if (get_encoder_cap(NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH)) {
+                format_config.singleSliceIntraRefresh = 1;
+              } else {
+                BOOST_LOG(warning) << "NvEnc: Single Slice Intra Refresh not supported";
+              }
+            } else {
+              BOOST_LOG(error) << "NvEnc: Client asked for intra-refresh but the encoder does not support intra-refresh";
+            }
+          }
           break;
         }
 
@@ -360,6 +375,7 @@ namespace nvenc {
               format_config.enableIntraRefresh = 1;
               format_config.intraRefreshPeriod = 300;
               format_config.intraRefreshCnt = 299;
+              format_config.outputRecoveryPointSEI = 1;
               if (get_encoder_cap(NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH)) {
                 format_config.singleSliceIntraRefresh = 1;
               } else {