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In libx264 wrapper, detect default settings and use medium profile to avoid failure.

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This commit is contained in:
Baptiste Coudurier 2011-04-21 09:01:31 -07:00
parent 9bf81b49cf
commit 20a160484f
1 changed files with 28 additions and 0 deletions
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28
libavcodec/libx264.c
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@ -165,6 +165,31 @@ static av_cold int X264_close(AVCodecContext *avctx)
return 0;
}
/**
* Detect default settings and use default profile to avoid libx264 failure.
*/
static void check_default_settings(AVCodecContext *avctx)
{
X264Context *x4 = avctx->priv_data;
int score = 0;
score += x4->params.analyse.i_me_range == 0;
score += x4->params.rc.i_qp_step == 3;
score += x4->params.i_keyint_max == 12;
score += x4->params.rc.i_qp_min == 2;
score += x4->params.rc.i_qp_max == 31;
score += x4->params.rc.f_qcompress == 0.5;
score += fabs(x4->params.rc.f_ip_factor - 1.25) < 0.01;
score += fabs(x4->params.rc.f_pb_factor - 1.25) < 0.01;
score += x4->params.analyse.inter == 0 && x4->params.analyse.i_subpel_refine == 8;
if (score >= 5) {
av_log(avctx, AV_LOG_ERROR, "Default settings detected, using medium profile\n");
x4->preset = "medium";
if (avctx->bit_rate == 200*100)
avctx->crf = 23;
}
}
#define OPT_STR(opt, param) \
do { \
if (param && x264_param_parse(&x4->params, opt, param) < 0) { \
@ -274,6 +299,9 @@ static av_cold int X264_init(AVCodecContext *avctx)
x4->params.rc.f_pb_factor = avctx->b_quant_factor;
x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
if (!x4->preset)
check_default_settings(avctx);
if (x4->preset || x4->tune) {
if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0)
return -1;