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libx264: only use ABR mode when the user explicitly set bitrate.

This commit is contained in:
Anton Khirnov 2011-08-20 16:59:47 +02:00
parent 03eff2bf43
commit ae60927aef
1 changed files with 11 additions and 6 deletions
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17
libavcodec/libx264.c
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@ -21,6 +21,7 @@
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include <x264.h>
#include <math.h>
#include <stdio.h>
@ -263,7 +264,10 @@ static av_cold int X264_init(AVCodecContext *avctx)
x4->params.i_log_level = X264_LOG_DEBUG;
x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
if (avctx->bit_rate) {
x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
x4->params.rc.i_rc_method = X264_RC_ABR;
}
x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
@ -280,11 +284,6 @@ static av_cold int X264_init(AVCodecContext *avctx)
}
}
// if neither crf nor cqp modes are selected we have to enable the RC
// we do it this way because we cannot check if the bitrate has been set
if (!(avctx->crf || (avctx->cqp > -1)))
x4->params.rc.i_rc_method = X264_RC_ABR;
if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
(avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
x4->params.rc.f_vbv_buffer_init =
@ -376,6 +375,11 @@ static const AVClass class = {
.version = LIBAVUTIL_VERSION_INT,
};
static const AVCodecDefault x264_defaults[] = {
{ "b", "0" },
{ NULL },
};
AVCodec ff_libx264_encoder = {
.name = "libx264",
.type = AVMEDIA_TYPE_VIDEO,
@ -388,4 +392,5 @@ AVCodec ff_libx264_encoder = {
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
.priv_class = &class,
.defaults = x264_defaults,
};