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authorJan Ekström <jeebjp@gmail.com>2023-03-09 20:27:06 +0200
committerTimo Rothenpieler <timo@rothenpieler.org>2023-06-06 23:54:50 +0200
commite5b5dd66535f444451e0fee59247b224d866f334 (patch)
treeb3a02c3bd90c733835a935fffddcca2f2c0efa0f
parent8fe2fec45321d1b82f98f9725ad9118cefcfa58d (diff)
downloadffmpeg-release/5.1.tar.gz
avcodec/libsvtav1: use larger of bit rate and max rate for buffer sizerelease/5.1
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.
-rw-r--r--libavcodec/libsvtav1.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
index d41bed480b..0f9d455660 100644
--- 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);