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vcomp/lavc libsvtavi: allow bitrate with CRF

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This sets Max Bitrate for CRF RC.
This commit is contained in:
Martin Pulec
2024-07-10 11:30:28 +02:00
parent 8737896579
commit 208c2f2243
1 changed files with 17 additions and 4 deletions
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21
src/video_compress/libavcodec.cpp
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@@ -1955,10 +1955,23 @@ static void configure_svt(AVCodecContext *codec_ctx, struct setparam_param *para
//pred-struct=1 is low-latency mode
char params[STR_LEN] = "pred-struct=1:";
if (param->requested_bitrate > 0) {
params[0] = '\0'; // do not set pred-struct for VBR
MSG(WARNING, "Bitrate setting for SVT AV1 is not "
"recommended since it increases latency, "
"use CRF/CQP if possible\n");
if (param->requested_crf == -1) {
params[0] =
'\0'; // do not set pred-struct for VBR
MSG(WARNING,
"Bitrate setting without crf for SVT AV1 "
"is not recommended since it increases "
"latency, prefer CRF/CQP if possible\n");
MSG(WARNING,
"However, you can specify _both_ crf and "
"bitrate options to set bitrate limit.\n");
} else {
codec_ctx->rc_max_rate = param->requested_bitrate;
codec_ctx->bit_rate = 0;
MSG(INFO,
"Setting rc_max_rate to %" PRId64 "\n",
codec_ctx->rc_max_rate);
}
}
snprintf(params + strlen(params),
sizeof params - strlen(params), "%s",