Commit 695768baed for ffmpeg

commit 695768baedfef8eab6e75129750ecec9fd1c6728
Author: Baptiste Coudurier <baptiste.coudurier@gmail.com>
Date:   Thu Nov 12 13:47:45 2026 -0800

    avcodec/libx265: set has_b_frames

    The wrapper never reported the encoder's reorder delay, unlike libx264.
    Export it from the parameters the encoder actually uses, since
    x265_encoder_open() may change bframes and b-pyramid (all-intra,
    intra refresh, MCSTF, temporal layers).

    Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
    Signed-off-by: Baptiste Coudurier <baptiste.coudurier@gmail.com>

diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
index 0ec4f87f5f..a6738aaa9b 100644
--- a/libavcodec/libx265.c
+++ b/libavcodec/libx265.c
@@ -608,6 +608,11 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
         return AVERROR_INVALIDDATA;
     }

+    /* x265 may adjust the B-frame settings when opening the encoder */
+    ctx->api->encoder_parameters(ctx->encoder, ctx->params);
+    avctx->has_b_frames = ctx->params->bframes ?
+                          ctx->params->bBPyramid ? 2 : 1 : 0;
+
     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
         x265_nal *nal;
         int nnal;