1 files changed, 67 insertions, 0 deletions
diff --git a/media-video/ffmpeg/files/ffmpeg-5.1.3-svt-av1.patch b/media-video/ffmpeg/files/ffmpeg-5.1.3-svt-av1.patch
new file mode 100644
index 000000000000..fb905f714fa3
--- /dev/null
+++ b/media-video/ffmpeg/files/ffmpeg-5.1.3-svt-av1.patch
@@ -0,0 +1,67 @@
+https://git.videolan.org/?p=ffmpeg.git;a=commit;h=8fe2fec45321d1b82f98f9725ad9118cefcfa58d
+https://git.videolan.org/?p=ffmpeg.git;a=commit;h=e5b5dd66535f444451e0fee59247b224d866f334
+
+From 8fe2fec45321d1b82f98f9725ad9118cefcfa58d Mon Sep 17 00:00:00 2001
+From: Christopher Degawa <ccom@randomderp.com>
+Date: Sun, 20 Nov 2022 13:07:36 -0600
+Subject: [PATCH] avcodec/libsvtav1: only set max_buf_sz if both bitrate and
+ rc_buf_sz is set
+
+maximum_buffer_size_ms should only be set if both are specified or if
+the user sets it through -svtav1-params buf-sz=val
+
+Signed-off-by: Christopher Degawa <ccom@randomderp.com>
+--- a/libavcodec/libsvtav1.c
++++ b/libavcodec/libsvtav1.c
+@@ -179,7 +179,8 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
+         param->min_qp_allowed       = avctx->qmin;
+     }
+     param->max_bit_rate             = avctx->rc_max_rate;
+-    param->maximum_buffer_size_ms   = avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
++    if (avctx->bit_rate && avctx->rc_buffer_size)
++        param->maximum_buffer_size_ms = avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
+ 
+     if (svt_enc->crf > 0) {
+         param->qp                   = svt_enc->crf;
+-- 
+2.30.2
+
+From e5b5dd66535f444451e0fee59247b224d866f334 Mon Sep 17 00:00:00 2001
+From: =?utf8?q?Jan=20Ekstr=C3=B6m?= <jeebjp@gmail.com>
+Date: Thu, 9 Mar 2023 20:27:06 +0200
+Subject: [PATCH] avcodec/libsvtav1: use larger of bit rate and max rate for
+ buffer size
+
+Generally if maxrate is set, the calculation should be maxrate over
+bufsize. This additionally enables CRF + maxrate & bufsize usage.
+
+In order to keep negative values from enabling zero to be treated
+as larger and causing a division by zero, check that one of the
+variables is larger than zero.
+--- a/libavcodec/libsvtav1.c
++++ b/libavcodec/libsvtav1.c
+@@ -179,8 +179,10 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
+         param->min_qp_allowed       = avctx->qmin;
+     }
+     param->max_bit_rate             = avctx->rc_max_rate;
+-    if (avctx->bit_rate && avctx->rc_buffer_size)
+-        param->maximum_buffer_size_ms = avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
++    if ((avctx->bit_rate > 0 || avctx->rc_max_rate > 0) && avctx->rc_buffer_size)
++        param->maximum_buffer_size_ms =
++            avctx->rc_buffer_size * 1000LL /
++            FFMAX(avctx->bit_rate, avctx->rc_max_rate);
+ 
+     if (svt_enc->crf > 0) {
+         param->qp                   = svt_enc->crf;
+@@ -297,7 +299,8 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
+     avctx->bit_rate       = param->rate_control_mode > 0 ?
+                             param->target_bit_rate : 0;
+     avctx->rc_max_rate    = param->max_bit_rate;
+-    avctx->rc_buffer_size = param->maximum_buffer_size_ms * avctx->bit_rate / 1000LL;
++    avctx->rc_buffer_size = param->maximum_buffer_size_ms *
++                            FFMAX(avctx->bit_rate, avctx->rc_max_rate) / 1000LL;
+ 
+     if (avctx->bit_rate || avctx->rc_max_rate || avctx->rc_buffer_size) {
+         AVCPBProperties *cpb_props = ff_add_cpb_side_data(avctx);
+-- 
+2.30.2