[FFmpeg-devel] [PATCH] nvenc: Propagate desired number of reference frames.

[Timo Rothenpieler]

> Signed-off-by: Philip Langdale <philipl at overt.org>
> ---
>  libavcodec/nvenc.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
> index c52beb7..e68bbe9 100644
> --- a/libavcodec/nvenc.c
> +++ b/libavcodec/nvenc.c
> @@ -614,6 +614,11 @@ static av_cold int nvenc_encode_init(AVCodecContext *avctx)
>      memcpy(&ctx->encode_config, &preset_config.presetCfg, sizeof(ctx->encode_config));
>      ctx->encode_config.version = NV_ENC_CONFIG_VER;
>  
> +    if (avctx->refs >= 0) {
> +        /* 0 means "let the hardware decide" */
> +        ctx->encode_config.encodeCodecConfig.h264Config.maxNumRefFrames = avctx->refs;
> +    }
> +
>      /* 0 is intra-only, 1 is I/P only, 2 is one B Frame, 3 two B frames, and so on. */
>      ctx->encode_config.frameIntervalP = avctx->max_b_frames + 1;
>  
> 

Looks good to merge.
The question if the ffmpeg default is good is a diffrent issue.

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