[FFmpeg-devel] [PATCH] nvenc: Use frameIntervalP instead of max_b_frames for offsetting output dts
Martin Storsjö
martin at martin.st
Fri Mar 12 22:42:02 EET 2021
If b-frames were enabled implicitly (if max_b_frames wasn't set by
the caller at all, since a0949d0bcb0eee2f3fffcf9a4810c0295d14c0dc),
we wouldn't offset dts at all, producing invalid pts/dts combinations
(causing loud warnings by ffmpeg, or muxer errors if passed without
an extra cleanup pass).
Instead use frameIntervalP for offsetting, which should always be
accurate.
---
libavcodec/nvenc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index a061dee880..fbf55ebc9d 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -1921,7 +1921,7 @@ static int nvenc_set_timestamp(AVCodecContext *avctx,
pkt->pts = params->outputTimeStamp;
pkt->dts = timestamp_queue_dequeue(ctx->timestamp_list);
- pkt->dts -= FFMAX(avctx->max_b_frames, 0) * FFMAX(avctx->ticks_per_frame, 1);
+ pkt->dts -= FFMAX(ctx->encode_config.frameIntervalP - 1, 0) * FFMAX(avctx->ticks_per_frame, 1);
return 0;
}
--
2.24.3 (Apple Git-128)
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