[FFmpeg-devel] [PATCH] libavcodec/qsvenc_hevc: Use default value from MSDK to set bf.

[Xiang, Haihao]

On Mon, 2022-06-20 at 17:06 +0800, Wenbin Chen wrote:
> Change the default value of "bf" for hevc_qsv to -1. 8 isn't the best
> choice so let MSDK to decide the number of b frames.
> 
> Signed-off-by: Wenbin Chen <wenbin.chen at intel.com>
> ---
>  libavcodec/qsvenc_hevc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/libavcodec/qsvenc_hevc.c b/libavcodec/qsvenc_hevc.c
> index da2bf457af..f6027f600b 100644
> --- a/libavcodec/qsvenc_hevc.c
> +++ b/libavcodec/qsvenc_hevc.c
> @@ -287,7 +287,7 @@ static const FFCodecDefault qsv_enc_defaults[] = {
>      { "refs",      "0"     },
>      // same as the x264 default
>      { "g",         "248"   },
> -    { "bf",        "8"     },
> +    { "bf",        "-1"    },
>      { "qmin",      "-1"    },
>      { "qmax",      "-1"    },
>      { "trellis",   "-1"    },

LGTM, will apply.

-Haihao