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avcodec/nvenc: fix vbv buffer size in cq mode 

The CQ calculation gets thrown off and behaves very nonsensical
if it isn't set to 0.
This commit is contained in:
Timo Rothenpieler 2022-12-08 12:31:00 +01:00
parent e228a0cccd
commit a1b534bf83
1 changed files with 2 additions and 1 deletions
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3
libavcodec/nvenc.c
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@ -920,8 +920,9 @@ static av_cold void nvenc_setup_rate_control(AVCodecContext *avctx)
av_log(avctx, AV_LOG_VERBOSE, "CQ(%d) mode enabled.\n", tmp_quality);
//CQ mode shall discard avg bitrate & honor max bitrate;
// CQ mode shall discard avg bitrate/vbv buffer size and honor only max bitrate
ctx->encode_config.rcParams.averageBitRate = avctx->bit_rate = 0;
ctx->encode_config.rcParams.vbvBufferSize = avctx->rc_buffer_size = 0;
ctx->encode_config.rcParams.maxBitRate = avctx->rc_max_rate;
}
}