2 * H.264 encoding using the x264 library
3 * Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/internal.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/stereo3d.h"
31 #define X264_API_IMPORTS 1
41 typedef struct X264Context {
86 static void X264_log(void *p, int level, const char *fmt, va_list args)
88 static const int level_map[] = {
89 [X264_LOG_ERROR] = AV_LOG_ERROR,
90 [X264_LOG_WARNING] = AV_LOG_WARNING,
91 [X264_LOG_INFO] = AV_LOG_INFO,
92 [X264_LOG_DEBUG] = AV_LOG_DEBUG
95 if (level < 0 || level > X264_LOG_DEBUG)
98 av_vlog(p, level_map[level], fmt, args);
102 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
103 x264_nal_t *nals, int nnal)
105 X264Context *x4 = ctx->priv_data;
107 int i, size = x4->sei_size, ret;
112 for (i = 0; i < nnal; i++)
113 size += nals[i].i_payload;
115 if ((ret = ff_alloc_packet(pkt, size)) < 0)
120 /* Write the SEI as part of the first frame. */
121 if (x4->sei_size > 0 && nnal > 0) {
122 memcpy(p, x4->sei, x4->sei_size);
127 for (i = 0; i < nnal; i++){
128 memcpy(p, nals[i].p_payload, nals[i].i_payload);
129 p += nals[i].i_payload;
135 static void reconfig_encoder(AVCodecContext *ctx, const AVFrame *frame)
137 X264Context *x4 = ctx->priv_data;
138 AVFrameSideData *side_data;
141 if (x4->params.b_tff != frame->top_field_first) {
142 x4->params.b_tff = frame->top_field_first;
143 x264_encoder_reconfig(x4->enc, &x4->params);
145 if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
146 x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
147 x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
148 x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
149 x264_encoder_reconfig(x4->enc, &x4->params);
152 if (x4->params.rc.i_vbv_buffer_size != ctx->rc_buffer_size / 1000 ||
153 x4->params.rc.i_vbv_max_bitrate != ctx->rc_max_rate / 1000) {
154 x4->params.rc.i_vbv_buffer_size = ctx->rc_buffer_size / 1000;
155 x4->params.rc.i_vbv_max_bitrate = ctx->rc_max_rate / 1000;
156 x264_encoder_reconfig(x4->enc, &x4->params);
159 if (x4->params.rc.i_rc_method == X264_RC_ABR &&
160 x4->params.rc.i_bitrate != ctx->bit_rate / 1000) {
161 x4->params.rc.i_bitrate = ctx->bit_rate / 1000;
162 x264_encoder_reconfig(x4->enc, &x4->params);
166 x4->params.rc.i_rc_method == X264_RC_CRF &&
167 x4->params.rc.f_rf_constant != x4->crf) {
168 x4->params.rc.f_rf_constant = x4->crf;
169 x264_encoder_reconfig(x4->enc, &x4->params);
172 if (x4->params.rc.i_rc_method == X264_RC_CQP &&
173 x4->params.rc.i_qp_constant != x4->cqp) {
174 x4->params.rc.i_qp_constant = x4->cqp;
175 x264_encoder_reconfig(x4->enc, &x4->params);
178 if (x4->crf_max >= 0 &&
179 x4->params.rc.f_rf_constant_max != x4->crf_max) {
180 x4->params.rc.f_rf_constant_max = x4->crf_max;
181 x264_encoder_reconfig(x4->enc, &x4->params);
184 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_STEREO3D);
186 AVStereo3D *stereo = (AVStereo3D *)side_data->data;
189 switch (stereo->type) {
190 case AV_STEREO3D_CHECKERBOARD:
193 case AV_STEREO3D_COLUMNS:
196 case AV_STEREO3D_LINES:
199 case AV_STEREO3D_SIDEBYSIDE:
202 case AV_STEREO3D_TOPBOTTOM:
205 case AV_STEREO3D_FRAMESEQUENCE:
213 if (fpa_type != x4->params.i_frame_packing) {
214 x4->params.i_frame_packing = fpa_type;
215 x264_encoder_reconfig(x4->enc, &x4->params);
220 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
223 X264Context *x4 = ctx->priv_data;
226 x264_picture_t pic_out;
228 x264_picture_init( &x4->pic );
229 x4->pic.img.i_csp = x4->params.i_csp;
230 if (x264_bit_depth > 8)
231 x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
232 x4->pic.img.i_plane = 3;
235 for (i = 0; i < 3; i++) {
236 x4->pic.img.plane[i] = frame->data[i];
237 x4->pic.img.i_stride[i] = frame->linesize[i];
240 x4->pic.i_pts = frame->pts;
242 switch (frame->pict_type) {
243 case AV_PICTURE_TYPE_I:
244 x4->pic.i_type = x4->forced_idr ? X264_TYPE_IDR
245 : X264_TYPE_KEYFRAME;
247 case AV_PICTURE_TYPE_P:
248 x4->pic.i_type = X264_TYPE_P;
250 case AV_PICTURE_TYPE_B:
251 x4->pic.i_type = X264_TYPE_B;
254 x4->pic.i_type = X264_TYPE_AUTO;
257 reconfig_encoder(ctx, frame);
260 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
261 return AVERROR_UNKNOWN;
263 ret = encode_nals(ctx, pkt, nal, nnal);
266 } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
268 pkt->pts = pic_out.i_pts;
269 pkt->dts = pic_out.i_dts;
271 #if FF_API_CODED_FRAME
272 FF_DISABLE_DEPRECATION_WARNINGS
273 switch (pic_out.i_type) {
276 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
279 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
283 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
286 FF_ENABLE_DEPRECATION_WARNINGS
289 pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
291 uint8_t *sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
294 return AVERROR(ENOMEM);
295 *(int *)sd = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
297 #if FF_API_CODED_FRAME
298 FF_DISABLE_DEPRECATION_WARNINGS
299 ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
300 FF_ENABLE_DEPRECATION_WARNINGS
308 static av_cold int X264_close(AVCodecContext *avctx)
310 X264Context *x4 = avctx->priv_data;
312 av_freep(&avctx->extradata);
316 x264_encoder_close(x4->enc);
323 static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
326 case AV_PIX_FMT_YUV420P:
327 case AV_PIX_FMT_YUVJ420P:
328 case AV_PIX_FMT_YUV420P9:
329 case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
330 case AV_PIX_FMT_YUV422P:
331 case AV_PIX_FMT_YUVJ422P:
332 case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
333 case AV_PIX_FMT_YUV444P:
334 case AV_PIX_FMT_YUVJ444P:
335 case AV_PIX_FMT_YUV444P9:
336 case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
337 case AV_PIX_FMT_NV12: return X264_CSP_NV12;
338 case AV_PIX_FMT_NV16:
339 case AV_PIX_FMT_NV20: return X264_CSP_NV16;
341 case AV_PIX_FMT_NV21: return X264_CSP_NV21;
347 #define PARSE_X264_OPT(name, var)\
348 if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
349 av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
350 return AVERROR(EINVAL);\
353 static av_cold int X264_init(AVCodecContext *avctx)
355 X264Context *x4 = avctx->priv_data;
356 AVCPBProperties *cpb_props;
358 #if CONFIG_LIBX262_ENCODER
359 if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
360 x4->params.b_mpeg2 = 1;
361 x264_param_default_mpeg2(&x4->params);
364 x264_param_default(&x4->params);
367 x4->params.b_deblocking_filter = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;
369 if (x4->preset || x4->tune)
370 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
371 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
372 return AVERROR(EINVAL);
375 if (avctx->level > 0)
376 x4->params.i_level_idc = avctx->level;
378 x4->params.pf_log = X264_log;
379 x4->params.p_log_private = avctx;
380 x4->params.i_log_level = X264_LOG_DEBUG;
381 x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
383 if (avctx->bit_rate) {
384 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
385 x4->params.rc.i_rc_method = X264_RC_ABR;
387 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
388 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
389 x4->params.rc.b_stat_write = avctx->flags & AV_CODEC_FLAG_PASS1;
390 if (avctx->flags & AV_CODEC_FLAG_PASS2) {
391 x4->params.rc.b_stat_read = 1;
394 x4->params.rc.i_rc_method = X264_RC_CRF;
395 x4->params.rc.f_rf_constant = x4->crf;
396 } else if (x4->cqp >= 0) {
397 x4->params.rc.i_rc_method = X264_RC_CQP;
398 x4->params.rc.i_qp_constant = x4->cqp;
401 if (x4->crf_max >= 0)
402 x4->params.rc.f_rf_constant_max = x4->crf_max;
405 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
406 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
407 x4->params.rc.f_vbv_buffer_init =
408 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
411 if (avctx->i_quant_factor > 0)
412 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
413 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
414 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
416 if (avctx->gop_size >= 0)
417 x4->params.i_keyint_max = avctx->gop_size;
418 if (avctx->max_b_frames >= 0)
419 x4->params.i_bframe = avctx->max_b_frames;
420 if (avctx->scenechange_threshold >= 0)
421 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
422 if (avctx->qmin >= 0)
423 x4->params.rc.i_qp_min = avctx->qmin;
424 if (avctx->qmax >= 0)
425 x4->params.rc.i_qp_max = avctx->qmax;
426 if (avctx->max_qdiff >= 0)
427 x4->params.rc.i_qp_step = avctx->max_qdiff;
428 if (avctx->qblur >= 0)
429 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
430 if (avctx->qcompress >= 0)
431 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
432 if (avctx->refs >= 0)
433 x4->params.i_frame_reference = avctx->refs;
434 if (avctx->trellis >= 0)
435 x4->params.analyse.i_trellis = avctx->trellis;
436 if (avctx->me_range >= 0)
437 x4->params.analyse.i_me_range = avctx->me_range;
438 if (avctx->noise_reduction >= 0)
439 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
440 if (avctx->me_subpel_quality >= 0)
441 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
442 if (avctx->b_frame_strategy >= 0)
443 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
444 if (avctx->keyint_min >= 0)
445 x4->params.i_keyint_min = avctx->keyint_min;
446 #if FF_API_CODER_TYPE
447 FF_DISABLE_DEPRECATION_WARNINGS
448 if (avctx->coder_type >= 0)
449 x4->coder = avctx->coder_type == FF_CODER_TYPE_AC;
450 FF_ENABLE_DEPRECATION_WARNINGS
452 if (avctx->me_cmp >= 0)
453 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
455 if (x4->aq_mode >= 0)
456 x4->params.rc.i_aq_mode = x4->aq_mode;
457 if (x4->aq_strength >= 0)
458 x4->params.rc.f_aq_strength = x4->aq_strength;
459 PARSE_X264_OPT("psy-rd", psy_rd);
460 PARSE_X264_OPT("deblock", deblock);
461 PARSE_X264_OPT("partitions", partitions);
462 PARSE_X264_OPT("stats", stats);
464 x4->params.analyse.b_psy = x4->psy;
465 if (x4->rc_lookahead >= 0)
466 x4->params.rc.i_lookahead = x4->rc_lookahead;
467 if (x4->weightp >= 0)
468 x4->params.analyse.i_weighted_pred = x4->weightp;
469 if (x4->weightb >= 0)
470 x4->params.analyse.b_weighted_bipred = x4->weightb;
471 if (x4->cplxblur >= 0)
472 x4->params.rc.f_complexity_blur = x4->cplxblur;
475 x4->params.analyse.b_ssim = x4->ssim;
476 if (x4->intra_refresh >= 0)
477 x4->params.b_intra_refresh = x4->intra_refresh;
478 if (x4->bluray_compat >= 0) {
479 x4->params.b_bluray_compat = x4->bluray_compat;
480 x4->params.b_vfr_input = 0;
482 if (x4->b_bias != INT_MIN)
483 x4->params.i_bframe_bias = x4->b_bias;
484 if (x4->b_pyramid >= 0)
485 x4->params.i_bframe_pyramid = x4->b_pyramid;
486 if (x4->mixed_refs >= 0)
487 x4->params.analyse.b_mixed_references = x4->mixed_refs;
489 x4->params.analyse.b_transform_8x8 = x4->dct8x8;
490 if (x4->fast_pskip >= 0)
491 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
493 x4->params.b_aud = x4->aud;
495 x4->params.rc.b_mb_tree = x4->mbtree;
496 if (x4->direct_pred >= 0)
497 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
499 if (x4->slice_max_size >= 0)
500 x4->params.i_slice_max_size = x4->slice_max_size;
502 if (x4->fastfirstpass)
503 x264_param_apply_fastfirstpass(&x4->params);
505 if (x4->nal_hrd >= 0)
506 x4->params.i_nal_hrd = x4->nal_hrd;
508 if (x4->motion_est >= 0) {
509 x4->params.analyse.i_me_method = x4->motion_est;
510 #if FF_API_MOTION_EST
511 FF_DISABLE_DEPRECATION_WARNINGS
513 if (avctx->me_method == ME_EPZS)
514 x4->params.analyse.i_me_method = X264_ME_DIA;
515 else if (avctx->me_method == ME_HEX)
516 x4->params.analyse.i_me_method = X264_ME_HEX;
517 else if (avctx->me_method == ME_UMH)
518 x4->params.analyse.i_me_method = X264_ME_UMH;
519 else if (avctx->me_method == ME_FULL)
520 x4->params.analyse.i_me_method = X264_ME_ESA;
521 else if (avctx->me_method == ME_TESA)
522 x4->params.analyse.i_me_method = X264_ME_TESA;
523 FF_ENABLE_DEPRECATION_WARNINGS
528 x4->params.b_cabac = x4->coder;
531 if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
532 av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
533 return AVERROR(EINVAL);
536 x4->params.i_width = avctx->width;
537 x4->params.i_height = avctx->height;
538 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
539 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
540 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
541 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
543 x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;
545 x4->params.i_threads = avctx->thread_count;
546 if (avctx->thread_type)
547 x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
549 x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;
551 x4->params.b_open_gop = !(avctx->flags & AV_CODEC_FLAG_CLOSED_GOP);
553 x4->params.i_slice_count = avctx->slices;
555 x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
556 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
557 avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
558 avctx->color_range == AVCOL_RANGE_JPEG;
560 // x264 validates the values internally
561 x4->params.vui.i_colorprim = avctx->color_primaries;
562 x4->params.vui.i_transfer = avctx->color_trc;
563 x4->params.vui.i_colmatrix = avctx->colorspace;
565 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
566 x4->params.b_repeat_headers = 0;
568 if (x4->x264_params) {
569 AVDictionary *dict = NULL;
570 AVDictionaryEntry *en = NULL;
572 if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
573 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
574 if (x264_param_parse(&x4->params, en->key, en->value) < 0)
575 av_log(avctx, AV_LOG_WARNING,
576 "Error parsing option '%s = %s'.\n",
584 // update AVCodecContext with x264 parameters
585 avctx->has_b_frames = x4->params.i_bframe ?
586 x4->params.i_bframe_pyramid ? 2 : 1 : 0;
587 if (avctx->max_b_frames < 0)
588 avctx->max_b_frames = 0;
590 avctx->bit_rate = x4->params.rc.i_bitrate*1000;
592 x4->enc = x264_encoder_open(&x4->params);
594 return AVERROR_UNKNOWN;
596 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
601 s = x264_encoder_headers(x4->enc, &nal, &nnal);
602 avctx->extradata = p = av_mallocz(s + AV_INPUT_BUFFER_PADDING_SIZE);
604 return AVERROR(ENOMEM);
606 for (i = 0; i < nnal; i++) {
607 /* Don't put the SEI in extradata. */
608 if (nal[i].i_type == NAL_SEI) {
609 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
610 x4->sei_size = nal[i].i_payload;
611 x4->sei = av_malloc(x4->sei_size);
613 return AVERROR(ENOMEM);
614 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
617 memcpy(p, nal[i].p_payload, nal[i].i_payload);
618 p += nal[i].i_payload;
620 avctx->extradata_size = p - avctx->extradata;
623 cpb_props = ff_add_cpb_side_data(avctx);
625 return AVERROR(ENOMEM);
626 cpb_props->buffer_size = x4->params.rc.i_vbv_buffer_size * 1000;
627 cpb_props->max_bitrate = x4->params.rc.i_vbv_max_bitrate * 1000;
628 cpb_props->avg_bitrate = x4->params.rc.i_bitrate * 1000;
633 static const enum AVPixelFormat pix_fmts_8bit[] = {
647 static const enum AVPixelFormat pix_fmts_9bit[] = {
652 static const enum AVPixelFormat pix_fmts_10bit[] = {
653 AV_PIX_FMT_YUV420P10,
654 AV_PIX_FMT_YUV422P10,
655 AV_PIX_FMT_YUV444P10,
660 static av_cold void X264_init_static(AVCodec *codec)
662 if (x264_bit_depth == 8)
663 codec->pix_fmts = pix_fmts_8bit;
664 else if (x264_bit_depth == 9)
665 codec->pix_fmts = pix_fmts_9bit;
666 else if (x264_bit_depth == 10)
667 codec->pix_fmts = pix_fmts_10bit;
670 #define OFFSET(x) offsetof(X264Context, x)
671 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
672 static const AVOption options[] = {
673 { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
674 { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
675 { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
676 { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
677 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
678 { "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 },
679 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
680 { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
681 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
682 { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
683 { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
684 { "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},
685 { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
686 { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
687 { "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 },
688 { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
689 { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
690 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
691 { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
692 { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
693 { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
694 { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
695 { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
696 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
697 { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
698 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
699 { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
700 { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
701 { "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 },
702 { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
703 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
704 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
705 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
706 { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
707 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
708 { "partitions", "A comma-separated list of partitions to consider. "
709 "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
710 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
711 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
712 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
713 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
714 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
715 { "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 },
716 { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
717 { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
718 "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
719 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
720 { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
721 { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
722 { "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, X264_ME_TESA, VE, "motion-est"},
723 { "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" },
724 { "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" },
725 { "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" },
726 { "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" },
727 { "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" },
728 { "forced-idr", "If forwarding iframes, require them to be IDR frames.", OFFSET(forced_idr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
729 { "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" },
730 { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" },
731 { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
732 { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
734 { "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 },
738 static const AVCodecDefault x264_defaults[] = {
742 { "i_qfactor", "-1" },
749 { "sc_threshold", "-1" },
752 { "me_range", "-1" },
753 #if FF_API_MOTION_EST
754 { "me_method", "-1" },
757 { "b_strategy", "-1" },
758 { "keyint_min", "-1" },
759 #if FF_API_CODER_TYPE
763 { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
764 { "thread_type", "0" },
765 { "flags", "+cgop" },
766 { "rc_init_occupancy","-1" },
770 #if CONFIG_LIBX264_ENCODER
771 static const AVClass class = {
772 .class_name = "libx264",
773 .item_name = av_default_item_name,
775 .version = LIBAVUTIL_VERSION_INT,
778 AVCodec ff_libx264_encoder = {
780 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
781 .type = AVMEDIA_TYPE_VIDEO,
782 .id = AV_CODEC_ID_H264,
783 .priv_data_size = sizeof(X264Context),
785 .encode2 = X264_frame,
787 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
788 .priv_class = &class,
789 .defaults = x264_defaults,
790 .init_static_data = X264_init_static,
791 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
792 FF_CODEC_CAP_INIT_CLEANUP,
796 #if CONFIG_LIBX262_ENCODER
797 static const AVClass X262_class = {
798 .class_name = "libx262",
799 .item_name = av_default_item_name,
801 .version = LIBAVUTIL_VERSION_INT,
804 AVCodec ff_libx262_encoder = {
806 .long_name = NULL_IF_CONFIG_SMALL("libx262 MPEG2VIDEO"),
807 .type = AVMEDIA_TYPE_VIDEO,
808 .id = AV_CODEC_ID_MPEG2VIDEO,
809 .priv_data_size = sizeof(X264Context),
811 .encode2 = X264_frame,
813 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
814 .priv_class = &X262_class,
815 .defaults = x264_defaults,
816 .pix_fmts = pix_fmts_8bit,
817 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
818 FF_CODEC_CAP_INIT_CLEANUP,