[FFmpeg-devel] [PATCH v2] avcodec/nvenc: fix b-frame DTS behavior with fractional framerates

[tt2468]

When using fractional framerates (or any fraction with a numerator != 1),
DTS values for packets would be calculated incorrectly.
---
 libavcodec/nvenc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 9acf3e8697..debc8326ae 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -2266,7 +2266,8 @@ static int nvenc_set_timestamp(AVCodecContext *avctx,
     dts = reorder_queue_dequeue(ctx->reorder_queue, avctx, pkt);
 
     if (avctx->codec_descriptor->props & AV_CODEC_PROP_REORDER) {
-        pkt->dts = dts - FFMAX(ctx->encode_config.frameIntervalP - 1, 0) * FFMAX(avctx->ticks_per_frame, 1);
+        pkt->dts = dts -
+            FFMAX(ctx->encode_config.frameIntervalP - 1, 0) * FFMAX(ctx->init_encode_params.frameRateNum * avctx->ticks_per_frame, ctx->init_encode_params.frameRateNum);
     } else {
         pkt->dts = pkt->pts;
     }
-- 
2.34.1