[FFmpeg-devel] [PATCH] hw_base_encode: Support refs option to limit number of references

David Rosca nowrep at gmail.com
Thu Jul 24 13:03:03 EEST 2025


On Wed, Jun 25, 2025 at 8:48 AM David Rosca <nowrep at gmail.com> wrote:
>
> ---
>  libavcodec/hw_base_encode.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/libavcodec/hw_base_encode.c b/libavcodec/hw_base_encode.c
> index 33a30c8d10..927aeb4bad 100644
> --- a/libavcodec/hw_base_encode.c
> +++ b/libavcodec/hw_base_encode.c
> @@ -666,6 +666,11 @@ int ff_hw_base_init_gop_structure(FFHWBaseEncodeContext *ctx, AVCodecContext *av
>      ctx->ref_l0 = FFMIN(ref_l0, MAX_PICTURE_REFERENCES);
>      ctx->ref_l1 = FFMIN(ref_l1, MAX_PICTURE_REFERENCES);
>
> +    if (avctx->refs > 0) {
> +        ctx->ref_l0 = FFMIN(ctx->ref_l0, avctx->refs);
> +        ctx->ref_l1 = FFMIN(ctx->ref_l1, avctx->refs);
> +    }
> +
>      if (flags & FF_HW_FLAG_INTRA_ONLY || avctx->gop_size <= 1) {
>          av_log(avctx, AV_LOG_VERBOSE, "Using intra frames only.\n");
>          ctx->gop_size = 1;
> --
> 2.50.0
>

Ping.

David


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