[FFmpeg-cvslog] avcodec/nvenc: notify users about rc_lookahead clipping

[Timo Rothenpieler]

ffmpeg | branch: master | Timo Rothenpieler <timo at rothenpieler.org> | Mon Dec  5 21:18:42 2022 +0100| [45216e33e295f27b52bb0e829284f682ba48b7c8] | committer: Timo Rothenpieler

avcodec/nvenc: notify users about rc_lookahead clipping

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=45216e33e295f27b52bb0e829284f682ba48b7c8
---

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

diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 30c10f394a..8a776e5737 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -1089,6 +1089,9 @@ static av_cold void nvenc_setup_rate_control(AVCodecContext *avctx)
                    ctx->encode_config.rcParams.lookaheadDepth,
                    ctx->encode_config.rcParams.disableIadapt ? "disabled" : "enabled",
                    ctx->encode_config.rcParams.disableBadapt ? "disabled" : "enabled");
+            if (ctx->encode_config.rcParams.lookaheadDepth < ctx->rc_lookahead)
+                av_log(avctx, AV_LOG_WARNING, "Clipping lookahead depth to %d (from %d) due to lack of surfaces/delay",
+                    ctx->encode_config.rcParams.lookaheadDepth, ctx->rc_lookahead);
         }
     }