/* * H.264 encoding using the x264 library * Copyright (C) 2005 Mans Rullgard <mans@mansr.com> * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/internal.h" #include "libavutil/opt.h" #include "libavutil/mem.h" #include "libavutil/pixdesc.h" #include "avcodec.h" #include "internal.h" #include <x264.h> #include <float.h> #include <math.h> #include <stdio.h> #include <stdlib.h> #include <string.h> typedef struct X264Context { AVClass *class; x264_param_t params; x264_t *enc; x264_picture_t pic; uint8_t *sei; int sei_size; AVFrame out_pic; char *preset; char *tune; char *profile; int fastfirstpass; float crf; float crf_max; int cqp; int aq_mode; float aq_strength; char *psy_rd; int psy; int rc_lookahead; int weightp; int weightb; int ssim; int intra_refresh; int b_bias; int b_pyramid; int mixed_refs; int dct8x8; int fast_pskip; int aud; int mbtree; char *deblock; float cplxblur; char *partitions; int direct_pred; int slice_max_size; char *stats; int nal_hrd; char *x264_params; } X264Context; static void X264_log(void *p, int level, const char *fmt, va_list args) { static const int level_map[] = { [X264_LOG_ERROR] = AV_LOG_ERROR, [X264_LOG_WARNING] = AV_LOG_WARNING, [X264_LOG_INFO] = AV_LOG_INFO, [X264_LOG_DEBUG] = AV_LOG_DEBUG }; if (level < 0 || level > X264_LOG_DEBUG) return; av_vlog(p, level_map[level], fmt, args); } static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, x264_nal_t *nals, int nnal) { X264Context *x4 = ctx->priv_data; uint8_t *p; int i, size = x4->sei_size, ret; if (!nnal) return 0; for (i = 0; i < nnal; i++) size += nals[i].i_payload; if ((ret = ff_alloc_packet(pkt, size)) < 0) return ret; p = pkt->data; /* Write the SEI as part of the first frame. */ if (x4->sei_size > 0 && nnal > 0) { memcpy(p, x4->sei, x4->sei_size); p += x4->sei_size; x4->sei_size = 0; } for (i = 0; i < nnal; i++){ memcpy(p, nals[i].p_payload, nals[i].i_payload); p += nals[i].i_payload; } return 1; } static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame, int *got_packet) { X264Context *x4 = ctx->priv_data; x264_nal_t *nal; int nnal, i, ret; x264_picture_t pic_out; x264_picture_init( &x4->pic ); x4->pic.img.i_csp = x4->params.i_csp; if (x264_bit_depth > 8) x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH; x4->pic.img.i_plane = 3; if (frame) { for (i = 0; i < 3; i++) { x4->pic.img.plane[i] = frame->data[i]; x4->pic.img.i_stride[i] = frame->linesize[i]; } x4->pic.i_pts = frame->pts; x4->pic.i_type = frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME : frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P : frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B : X264_TYPE_AUTO; if (x4->params.b_tff != frame->top_field_first) { x4->params.b_tff = frame->top_field_first; x264_encoder_reconfig(x4->enc, &x4->params); } if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den || x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) { x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den; x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num; x264_encoder_reconfig(x4->enc, &x4->params); } } do { if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0) return -1; ret = encode_nals(ctx, pkt, nal, nnal); if (ret < 0) return -1; } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc)); pkt->pts = pic_out.i_pts; pkt->dts = pic_out.i_dts; switch (pic_out.i_type) { case X264_TYPE_IDR: case X264_TYPE_I: x4->out_pic.pict_type = AV_PICTURE_TYPE_I; break; case X264_TYPE_P: x4->out_pic.pict_type = AV_PICTURE_TYPE_P; break; case X264_TYPE_B: case X264_TYPE_BREF: x4->out_pic.pict_type = AV_PICTURE_TYPE_B; break; } pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe; if (ret) x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; *got_packet = ret; return 0; } static av_cold int X264_close(AVCodecContext *avctx) { X264Context *x4 = avctx->priv_data; av_freep(&avctx->extradata); av_free(x4->sei); if (x4->enc) x264_encoder_close(x4->enc); return 0; } static int convert_pix_fmt(enum AVPixelFormat pix_fmt) { switch (pix_fmt) { case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUVJ420P: case AV_PIX_FMT_YUV420P9: case AV_PIX_FMT_YUV420P10: return X264_CSP_I420; case AV_PIX_FMT_YUV422P: case AV_PIX_FMT_YUV422P10: return X264_CSP_I422; case AV_PIX_FMT_YUV444P: case AV_PIX_FMT_YUV444P9: case AV_PIX_FMT_YUV444P10: return X264_CSP_I444; }; return 0; } #define PARSE_X264_OPT(name, var)\ if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\ av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\ return AVERROR(EINVAL);\ } static av_cold int X264_init(AVCodecContext *avctx) { X264Context *x4 = avctx->priv_data; x264_param_default(&x4->params); x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; if (x4->preset || x4->tune) if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) { av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune); return AVERROR(EINVAL); } if (avctx->level > 0) x4->params.i_level_idc = avctx->level; x4->params.pf_log = X264_log; x4->params.p_log_private = avctx; x4->params.i_log_level = X264_LOG_DEBUG; x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt); 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; if (avctx->flags & CODEC_FLAG_PASS2) { x4->params.rc.b_stat_read = 1; } else { if (x4->crf >= 0) { x4->params.rc.i_rc_method = X264_RC_CRF; x4->params.rc.f_rf_constant = x4->crf; } else if (x4->cqp >= 0) { x4->params.rc.i_rc_method = X264_RC_CQP; x4->params.rc.i_qp_constant = x4->cqp; } if (x4->crf_max >= 0) x4->params.rc.f_rf_constant_max = x4->crf_max; } if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 && (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { x4->params.rc.f_vbv_buffer_init = (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; } if (avctx->i_quant_factor > 0) x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); x4->params.rc.f_pb_factor = avctx->b_quant_factor; x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; if (avctx->me_method == ME_EPZS) x4->params.analyse.i_me_method = X264_ME_DIA; else if (avctx->me_method == ME_HEX) x4->params.analyse.i_me_method = X264_ME_HEX; else if (avctx->me_method == ME_UMH) x4->params.analyse.i_me_method = X264_ME_UMH; else if (avctx->me_method == ME_FULL) x4->params.analyse.i_me_method = X264_ME_ESA; else if (avctx->me_method == ME_TESA) x4->params.analyse.i_me_method = X264_ME_TESA; if (avctx->gop_size >= 0) x4->params.i_keyint_max = avctx->gop_size; if (avctx->max_b_frames >= 0) x4->params.i_bframe = avctx->max_b_frames; if (avctx->scenechange_threshold >= 0) x4->params.i_scenecut_threshold = avctx->scenechange_threshold; if (avctx->qmin >= 0) x4->params.rc.i_qp_min = avctx->qmin; if (avctx->qmax >= 0) x4->params.rc.i_qp_max = avctx->qmax; if (avctx->max_qdiff >= 0) x4->params.rc.i_qp_step = avctx->max_qdiff; if (avctx->qblur >= 0) x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ if (avctx->qcompress >= 0) x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ if (avctx->refs >= 0) x4->params.i_frame_reference = avctx->refs; if (avctx->trellis >= 0) x4->params.analyse.i_trellis = avctx->trellis; if (avctx->me_range >= 0) x4->params.analyse.i_me_range = avctx->me_range; if (avctx->noise_reduction >= 0) x4->params.analyse.i_noise_reduction = avctx->noise_reduction; if (avctx->me_subpel_quality >= 0) x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; if (avctx->b_frame_strategy >= 0) x4->params.i_bframe_adaptive = avctx->b_frame_strategy; if (avctx->keyint_min >= 0) x4->params.i_keyint_min = avctx->keyint_min; if (avctx->coder_type >= 0) x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC; if (avctx->me_cmp >= 0) x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; if (x4->aq_mode >= 0) x4->params.rc.i_aq_mode = x4->aq_mode; if (x4->aq_strength >= 0) x4->params.rc.f_aq_strength = x4->aq_strength; PARSE_X264_OPT("psy-rd", psy_rd); PARSE_X264_OPT("deblock", deblock); PARSE_X264_OPT("partitions", partitions); PARSE_X264_OPT("stats", stats); if (x4->psy >= 0) x4->params.analyse.b_psy = x4->psy; if (x4->rc_lookahead >= 0) x4->params.rc.i_lookahead = x4->rc_lookahead; if (x4->weightp >= 0) x4->params.analyse.i_weighted_pred = x4->weightp; if (x4->weightb >= 0) x4->params.analyse.b_weighted_bipred = x4->weightb; if (x4->cplxblur >= 0) x4->params.rc.f_complexity_blur = x4->cplxblur; if (x4->ssim >= 0) x4->params.analyse.b_ssim = x4->ssim; if (x4->intra_refresh >= 0) x4->params.b_intra_refresh = x4->intra_refresh; if (x4->b_bias != INT_MIN) x4->params.i_bframe_bias = x4->b_bias; if (x4->b_pyramid >= 0) x4->params.i_bframe_pyramid = x4->b_pyramid; if (x4->mixed_refs >= 0) x4->params.analyse.b_mixed_references = x4->mixed_refs; if (x4->dct8x8 >= 0) x4->params.analyse.b_transform_8x8 = x4->dct8x8; if (x4->fast_pskip >= 0) x4->params.analyse.b_fast_pskip = x4->fast_pskip; if (x4->aud >= 0) x4->params.b_aud = x4->aud; if (x4->mbtree >= 0) x4->params.rc.b_mb_tree = x4->mbtree; if (x4->direct_pred >= 0) x4->params.analyse.i_direct_mv_pred = x4->direct_pred; if (x4->slice_max_size >= 0) x4->params.i_slice_max_size = x4->slice_max_size; if (x4->fastfirstpass) x264_param_apply_fastfirstpass(&x4->params); if (x4->nal_hrd >= 0) x4->params.i_nal_hrd = x4->nal_hrd; if (x4->profile) if (x264_param_apply_profile(&x4->params, x4->profile) < 0) { av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile); return AVERROR(EINVAL); } x4->params.i_width = avctx->width; x4->params.i_height = avctx->height; x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den; x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num; x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; x4->params.i_threads = avctx->thread_count; if (avctx->thread_type) x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE; x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP); x4->params.i_slice_count = avctx->slices; x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P; if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) x4->params.b_repeat_headers = 0; if (x4->x264_params) { AVDictionary *dict = NULL; AVDictionaryEntry *en = NULL; if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) { while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) { if (x264_param_parse(&x4->params, en->key, en->value) < 0) av_log(avctx, AV_LOG_WARNING, "Error parsing option '%s = %s'.\n", en->key, en->value); } av_dict_free(&dict); } } // update AVCodecContext with x264 parameters avctx->has_b_frames = x4->params.i_bframe ? x4->params.i_bframe_pyramid ? 2 : 1 : 0; if (avctx->max_b_frames < 0) avctx->max_b_frames = 0; avctx->bit_rate = x4->params.rc.i_bitrate*1000; x4->enc = x264_encoder_open(&x4->params); if (!x4->enc) return -1; avctx->coded_frame = &x4->out_pic; if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { x264_nal_t *nal; uint8_t *p; int nnal, s, i; s = x264_encoder_headers(x4->enc, &nal, &nnal); avctx->extradata = p = av_malloc(s); for (i = 0; i < nnal; i++) { /* Don't put the SEI in extradata. */ if (nal[i].i_type == NAL_SEI) { av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25); x4->sei_size = nal[i].i_payload; x4->sei = av_malloc(x4->sei_size); memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload); continue; } memcpy(p, nal[i].p_payload, nal[i].i_payload); p += nal[i].i_payload; } avctx->extradata_size = p - avctx->extradata; } return 0; } static const enum AVPixelFormat pix_fmts_8bit[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE }; static const enum AVPixelFormat pix_fmts_9bit[] = { AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_NONE }; static const enum AVPixelFormat pix_fmts_10bit[] = { AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE }; static av_cold void X264_init_static(AVCodec *codec) { if (x264_bit_depth == 8) codec->pix_fmts = pix_fmts_8bit; else if (x264_bit_depth == 9) codec->pix_fmts = pix_fmts_9bit; else if (x264_bit_depth == 10) codec->pix_fmts = pix_fmts_10bit; } #define OFFSET(x) offsetof(X264Context, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE}, { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE}, { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, { "crf_max", "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE }, { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"}, { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" }, { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" }, { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" }, { "aq-strength", "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), AV_OPT_TYPE_FLOAT, {.dbl = -1}, -1, FLT_MAX, VE}, { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE}, { "rc-lookahead", "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE }, { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" }, { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" }, { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" }, { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" }, { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" }, { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" }, { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" }, { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" }, { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, VE }, { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE}, { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE}, { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE}, { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE}, { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, { "partitions", "A comma-separated list of partitions to consider. " "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" }, { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, { "slice-max-size","Limit the size of each slice in bytes", OFFSET(slice_max_size),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE }, { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, { "nal-hrd", "Signal HRD information (requires vbv-bufsize; " "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" }, { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" }, { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" }, { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" }, { "x264-params", "Override the x264 configuration using a :-separated list of key=value parameters", OFFSET(x264_params), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, { NULL }, }; static const AVClass class = { .class_name = "libx264", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; static const AVCodecDefault x264_defaults[] = { { "b", "0" }, { "bf", "-1" }, { "g", "-1" }, { "i_qfactor", "-1" }, { "qmin", "-1" }, { "qmax", "-1" }, { "qdiff", "-1" }, { "qblur", "-1" }, { "qcomp", "-1" }, { "refs", "-1" }, { "sc_threshold", "-1" }, { "trellis", "-1" }, { "nr", "-1" }, { "me_range", "-1" }, { "me_method", "-1" }, { "subq", "-1" }, { "b_strategy", "-1" }, { "keyint_min", "-1" }, { "coder", "-1" }, { "cmp", "-1" }, { "threads", AV_STRINGIFY(X264_THREADS_AUTO) }, { "thread_type", "0" }, { "flags", "+cgop" }, { "rc_init_occupancy","-1" }, { NULL }, }; AVCodec ff_libx264_encoder = { .name = "libx264", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_H264, .priv_data_size = sizeof(X264Context), .init = X264_init, .encode2 = X264_frame, .close = X264_close, .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), .priv_class = &class, .defaults = x264_defaults, .init_static_data = X264_init_static, };