From ec8bd87d8d858457c9d3d4327ced170eda6c6c70 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 12 Jul 2022 14:37:15 +0200
Subject: lavc/libx264: pass through frame durations to encoded packets

---
 libavcodec/libx264.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 6afa3cdadb..34ba3408aa 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -51,6 +51,7 @@
 typedef struct X264Opaque {
     int64_t reordered_opaque;
     int64_t wallclock;
+    int64_t duration;
 } X264Opaque;
 
 typedef struct X264Context {
@@ -372,6 +373,7 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
         x4->reordered_opaque[x4->next_reordered_opaque].wallclock = wallclock;
         if (ctx->export_side_data & AV_CODEC_EXPORT_DATA_PRFT)
             x4->reordered_opaque[x4->next_reordered_opaque].wallclock = av_gettime();
+        x4->reordered_opaque[x4->next_reordered_opaque].duration = frame->duration;
         x4->pic.opaque = &x4->reordered_opaque[x4->next_reordered_opaque];
         x4->next_reordered_opaque++;
         x4->next_reordered_opaque %= x4->nb_reordered_opaque;
@@ -561,6 +563,7 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
         out_opaque < &x4->reordered_opaque[x4->nb_reordered_opaque]) {
         ctx->reordered_opaque = out_opaque->reordered_opaque;
         wallclock = out_opaque->wallclock;
+        pkt->duration = out_opaque->duration;
     } else {
         // Unexpected opaque pointer on picture output
         ctx->reordered_opaque = 0;
-- 
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