https://bugs.gentoo.org/979520
https://github.com/FFmpeg/FFmpeg/commit/0a7c5e507b4448f02ca914c50654a3bc979d02dd

From 0a7c5e507b4448f02ca914c50654a3bc979d02dd Mon Sep 17 00:00:00 2001
From: Diego de Souza <ddesouza@nvidia.com>
Date: Thu, 5 Mar 2026 17:06:12 +0100
Subject: [PATCH] avcodec/nvenc: fix compatibility with Video Codec SDK 13.1

NV_ENC_CLOCK_TIMESTAMP_SET was changed in SDK 13.1: countingType was
replaced by countingTypeLSB and countingTypeMSB.

Signed-off-by: Diego de Souza <ddesouza@nvidia.com>
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -263,8 +263,10 @@ static void nvenc_map_preset(NvencContext *ctx)
 
 static void nvenc_print_driver_requirement(AVCodecContext *avctx, int level)
 {
-#if NVENCAPI_CHECK_VERSION(13, 1)
+#if NVENCAPI_CHECK_VERSION(13, 2)
     const char *minver = "(unknown)";
+#elif NVENCAPI_CHECK_VERSION(13, 1)
+    const char *minver = "610.00";
 #elif NVENCAPI_CHECK_VERSION(13, 0)
     const char *minver = "570.0";
 #elif NVENCAPI_CHECK_VERSION(12, 2)
@@ -2540,7 +2542,12 @@ static void nvenc_fill_time_code(AVCodecContext *avctx, const AVFrame *frame, NV
             unsigned hh, mm, ss, ff, drop;
             ff_timecode_set_smpte(&drop, &hh, &mm, &ss, &ff, avctx->framerate, tc[i + 1], 0, 0);
 
+#ifdef NVENC_NEW_COUNTING_TYPE
+            time_code->clockTimestamp[i].countingTypeLSB = 0;
+            time_code->clockTimestamp[i].countingTypeMSB = 0;
+#else
             time_code->clockTimestamp[i].countingType = 0;
+#endif
             time_code->clockTimestamp[i].discontinuityFlag = 0;
             time_code->clockTimestamp[i].cntDroppedFrames = drop;
             time_code->clockTimestamp[i].nFrames = ff;
--- a/libavcodec/nvenc.h
+++ b/libavcodec/nvenc.h
@@ -111,6 +111,11 @@ typedef void ID3D11Device;
 #define NVENC_HAVE_MVHEVC
 #endif
 
+// SDK 13.1 compile time feature checks
+#if NVENCAPI_CHECK_VERSION(13, 1)
+#define NVENC_NEW_COUNTING_TYPE
+#endif
+
 typedef struct NvencSurface
 {
     NV_ENC_INPUT_PTR input_surface;