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 {
82 static void X264_log(void *p, int level, const char *fmt, va_list args)
84 static const int level_map[] = {
85 [X264_LOG_ERROR] = AV_LOG_ERROR,
86 [X264_LOG_WARNING] = AV_LOG_WARNING,
87 [X264_LOG_INFO] = AV_LOG_INFO,
88 [X264_LOG_DEBUG] = AV_LOG_DEBUG
91 if (level < 0 || level > X264_LOG_DEBUG)
94 av_vlog(p, level_map[level], fmt, args);
98 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
99 x264_nal_t *nals, int nnal)
101 X264Context *x4 = ctx->priv_data;
103 int i, size = x4->sei_size, ret;
108 for (i = 0; i < nnal; i++)
109 size += nals[i].i_payload;
111 if ((ret = ff_alloc_packet(pkt, size)) < 0)
116 /* Write the SEI as part of the first frame. */
117 if (x4->sei_size > 0 && nnal > 0) {
118 memcpy(p, x4->sei, x4->sei_size);
123 for (i = 0; i < nnal; i++){
124 memcpy(p, nals[i].p_payload, nals[i].i_payload);
125 p += nals[i].i_payload;
131 static void reconfig_encoder(AVCodecContext *ctx, const AVFrame *frame)
133 X264Context *x4 = ctx->priv_data;
134 AVFrameSideData *side_data;
137 if (x4->params.b_tff != frame->top_field_first) {
138 x4->params.b_tff = frame->top_field_first;
139 x264_encoder_reconfig(x4->enc, &x4->params);
141 if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
142 x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
143 x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
144 x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
145 x264_encoder_reconfig(x4->enc, &x4->params);
148 if (x4->params.rc.i_vbv_buffer_size != ctx->rc_buffer_size / 1000 ||
149 x4->params.rc.i_vbv_max_bitrate != ctx->rc_max_rate / 1000) {
150 x4->params.rc.i_vbv_buffer_size = ctx->rc_buffer_size / 1000;
151 x4->params.rc.i_vbv_max_bitrate = ctx->rc_max_rate / 1000;
152 x264_encoder_reconfig(x4->enc, &x4->params);
155 if (x4->params.rc.i_rc_method == X264_RC_ABR &&
156 x4->params.rc.i_bitrate != ctx->bit_rate / 1000) {
157 x4->params.rc.i_bitrate = ctx->bit_rate / 1000;
158 x264_encoder_reconfig(x4->enc, &x4->params);
162 x4->params.rc.i_rc_method == X264_RC_CRF &&
163 x4->params.rc.f_rf_constant != x4->crf) {
164 x4->params.rc.f_rf_constant = x4->crf;
165 x264_encoder_reconfig(x4->enc, &x4->params);
168 if (x4->params.rc.i_rc_method == X264_RC_CQP &&
169 x4->params.rc.i_qp_constant != x4->cqp) {
170 x4->params.rc.i_qp_constant = x4->cqp;
171 x264_encoder_reconfig(x4->enc, &x4->params);
174 if (x4->crf_max >= 0 &&
175 x4->params.rc.f_rf_constant_max != x4->crf_max) {
176 x4->params.rc.f_rf_constant_max = x4->crf_max;
177 x264_encoder_reconfig(x4->enc, &x4->params);
180 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_STEREO3D);
182 AVStereo3D *stereo = (AVStereo3D *)side_data->data;
185 switch (stereo->type) {
186 case AV_STEREO3D_CHECKERBOARD:
189 case AV_STEREO3D_COLUMNS:
192 case AV_STEREO3D_LINES:
195 case AV_STEREO3D_SIDEBYSIDE:
198 case AV_STEREO3D_TOPBOTTOM:
201 case AV_STEREO3D_FRAMESEQUENCE:
209 if (fpa_type != x4->params.i_frame_packing) {
210 x4->params.i_frame_packing = fpa_type;
211 x264_encoder_reconfig(x4->enc, &x4->params);
216 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
219 X264Context *x4 = ctx->priv_data;
222 x264_picture_t pic_out;
224 x264_picture_init( &x4->pic );
225 x4->pic.img.i_csp = x4->params.i_csp;
226 if (x264_bit_depth > 8)
227 x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
228 x4->pic.img.i_plane = 3;
231 for (i = 0; i < 3; i++) {
232 x4->pic.img.plane[i] = frame->data[i];
233 x4->pic.img.i_stride[i] = frame->linesize[i];
236 x4->pic.i_pts = frame->pts;
238 frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
239 frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
240 frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
242 reconfig_encoder(ctx, frame);
245 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
246 return AVERROR_UNKNOWN;
248 ret = encode_nals(ctx, pkt, nal, nnal);
251 } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
253 pkt->pts = pic_out.i_pts;
254 pkt->dts = pic_out.i_dts;
256 #if FF_API_CODED_FRAME
257 FF_DISABLE_DEPRECATION_WARNINGS
258 switch (pic_out.i_type) {
261 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
264 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
268 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
271 FF_ENABLE_DEPRECATION_WARNINGS
274 pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
276 uint8_t *sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
279 return AVERROR(ENOMEM);
280 *(int *)sd = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
282 #if FF_API_CODED_FRAME
283 FF_DISABLE_DEPRECATION_WARNINGS
284 ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
285 FF_ENABLE_DEPRECATION_WARNINGS
293 static av_cold int X264_close(AVCodecContext *avctx)
295 X264Context *x4 = avctx->priv_data;
297 av_freep(&avctx->extradata);
301 x264_encoder_close(x4->enc);
308 static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
311 case AV_PIX_FMT_YUV420P:
312 case AV_PIX_FMT_YUVJ420P:
313 case AV_PIX_FMT_YUV420P9:
314 case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
315 case AV_PIX_FMT_YUV422P:
316 case AV_PIX_FMT_YUVJ422P:
317 case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
318 case AV_PIX_FMT_YUV444P:
319 case AV_PIX_FMT_YUVJ444P:
320 case AV_PIX_FMT_YUV444P9:
321 case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
322 case AV_PIX_FMT_NV12: return X264_CSP_NV12;
323 case AV_PIX_FMT_NV16:
324 case AV_PIX_FMT_NV20: return X264_CSP_NV16;
329 #define PARSE_X264_OPT(name, var)\
330 if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
331 av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
332 return AVERROR(EINVAL);\
335 static av_cold int X264_init(AVCodecContext *avctx)
337 X264Context *x4 = avctx->priv_data;
339 #if CONFIG_LIBX262_ENCODER
340 if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
341 x4->params.b_mpeg2 = 1;
342 x264_param_default_mpeg2(&x4->params);
345 x264_param_default(&x4->params);
348 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
350 if (x4->preset || x4->tune)
351 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
352 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
353 return AVERROR(EINVAL);
356 if (avctx->level > 0)
357 x4->params.i_level_idc = avctx->level;
359 x4->params.pf_log = X264_log;
360 x4->params.p_log_private = avctx;
361 x4->params.i_log_level = X264_LOG_DEBUG;
362 x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
364 if (avctx->bit_rate) {
365 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
366 x4->params.rc.i_rc_method = X264_RC_ABR;
368 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
369 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
370 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
371 if (avctx->flags & CODEC_FLAG_PASS2) {
372 x4->params.rc.b_stat_read = 1;
375 x4->params.rc.i_rc_method = X264_RC_CRF;
376 x4->params.rc.f_rf_constant = x4->crf;
377 } else if (x4->cqp >= 0) {
378 x4->params.rc.i_rc_method = X264_RC_CQP;
379 x4->params.rc.i_qp_constant = x4->cqp;
382 if (x4->crf_max >= 0)
383 x4->params.rc.f_rf_constant_max = x4->crf_max;
386 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
387 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
388 x4->params.rc.f_vbv_buffer_init =
389 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
392 if (avctx->i_quant_factor > 0)
393 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
394 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
395 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
397 if (avctx->me_method == ME_EPZS)
398 x4->params.analyse.i_me_method = X264_ME_DIA;
399 else if (avctx->me_method == ME_HEX)
400 x4->params.analyse.i_me_method = X264_ME_HEX;
401 else if (avctx->me_method == ME_UMH)
402 x4->params.analyse.i_me_method = X264_ME_UMH;
403 else if (avctx->me_method == ME_FULL)
404 x4->params.analyse.i_me_method = X264_ME_ESA;
405 else if (avctx->me_method == ME_TESA)
406 x4->params.analyse.i_me_method = X264_ME_TESA;
408 if (avctx->gop_size >= 0)
409 x4->params.i_keyint_max = avctx->gop_size;
410 if (avctx->max_b_frames >= 0)
411 x4->params.i_bframe = avctx->max_b_frames;
412 if (avctx->scenechange_threshold >= 0)
413 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
414 if (avctx->qmin >= 0)
415 x4->params.rc.i_qp_min = avctx->qmin;
416 if (avctx->qmax >= 0)
417 x4->params.rc.i_qp_max = avctx->qmax;
418 if (avctx->max_qdiff >= 0)
419 x4->params.rc.i_qp_step = avctx->max_qdiff;
420 if (avctx->qblur >= 0)
421 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
422 if (avctx->qcompress >= 0)
423 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
424 if (avctx->refs >= 0)
425 x4->params.i_frame_reference = avctx->refs;
426 if (avctx->trellis >= 0)
427 x4->params.analyse.i_trellis = avctx->trellis;
428 if (avctx->me_range >= 0)
429 x4->params.analyse.i_me_range = avctx->me_range;
430 if (avctx->noise_reduction >= 0)
431 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
432 if (avctx->me_subpel_quality >= 0)
433 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
434 if (avctx->b_frame_strategy >= 0)
435 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
436 if (avctx->keyint_min >= 0)
437 x4->params.i_keyint_min = avctx->keyint_min;
438 if (avctx->coder_type >= 0)
439 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
440 if (avctx->me_cmp >= 0)
441 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
443 if (x4->aq_mode >= 0)
444 x4->params.rc.i_aq_mode = x4->aq_mode;
445 if (x4->aq_strength >= 0)
446 x4->params.rc.f_aq_strength = x4->aq_strength;
447 PARSE_X264_OPT("psy-rd", psy_rd);
448 PARSE_X264_OPT("deblock", deblock);
449 PARSE_X264_OPT("partitions", partitions);
450 PARSE_X264_OPT("stats", stats);
452 x4->params.analyse.b_psy = x4->psy;
453 if (x4->rc_lookahead >= 0)
454 x4->params.rc.i_lookahead = x4->rc_lookahead;
455 if (x4->weightp >= 0)
456 x4->params.analyse.i_weighted_pred = x4->weightp;
457 if (x4->weightb >= 0)
458 x4->params.analyse.b_weighted_bipred = x4->weightb;
459 if (x4->cplxblur >= 0)
460 x4->params.rc.f_complexity_blur = x4->cplxblur;
463 x4->params.analyse.b_ssim = x4->ssim;
464 if (x4->intra_refresh >= 0)
465 x4->params.b_intra_refresh = x4->intra_refresh;
466 if (x4->bluray_compat >= 0) {
467 x4->params.b_bluray_compat = x4->bluray_compat;
468 x4->params.b_vfr_input = 0;
470 if (x4->b_bias != INT_MIN)
471 x4->params.i_bframe_bias = x4->b_bias;
472 if (x4->b_pyramid >= 0)
473 x4->params.i_bframe_pyramid = x4->b_pyramid;
474 if (x4->mixed_refs >= 0)
475 x4->params.analyse.b_mixed_references = x4->mixed_refs;
477 x4->params.analyse.b_transform_8x8 = x4->dct8x8;
478 if (x4->fast_pskip >= 0)
479 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
481 x4->params.b_aud = x4->aud;
483 x4->params.rc.b_mb_tree = x4->mbtree;
484 if (x4->direct_pred >= 0)
485 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
487 if (x4->slice_max_size >= 0)
488 x4->params.i_slice_max_size = x4->slice_max_size;
490 if (x4->fastfirstpass)
491 x264_param_apply_fastfirstpass(&x4->params);
493 if (x4->nal_hrd >= 0)
494 x4->params.i_nal_hrd = x4->nal_hrd;
497 if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
498 av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
499 return AVERROR(EINVAL);
502 x4->params.i_width = avctx->width;
503 x4->params.i_height = avctx->height;
504 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
505 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
506 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
507 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
509 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
511 x4->params.i_threads = avctx->thread_count;
512 if (avctx->thread_type)
513 x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
515 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
517 x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
519 x4->params.i_slice_count = avctx->slices;
521 x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
522 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
523 avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
524 avctx->color_range == AVCOL_RANGE_JPEG;
526 // x264 validates the values internally
527 x4->params.vui.i_colorprim = avctx->color_primaries;
528 x4->params.vui.i_transfer = avctx->color_trc;
529 x4->params.vui.i_colmatrix = avctx->colorspace;
531 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
532 x4->params.b_repeat_headers = 0;
534 if (x4->x264_params) {
535 AVDictionary *dict = NULL;
536 AVDictionaryEntry *en = NULL;
538 if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
539 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
540 if (x264_param_parse(&x4->params, en->key, en->value) < 0)
541 av_log(avctx, AV_LOG_WARNING,
542 "Error parsing option '%s = %s'.\n",
550 // update AVCodecContext with x264 parameters
551 avctx->has_b_frames = x4->params.i_bframe ?
552 x4->params.i_bframe_pyramid ? 2 : 1 : 0;
553 if (avctx->max_b_frames < 0)
554 avctx->max_b_frames = 0;
556 avctx->bit_rate = x4->params.rc.i_bitrate*1000;
558 x4->enc = x264_encoder_open(&x4->params);
560 return AVERROR_UNKNOWN;
562 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
567 s = x264_encoder_headers(x4->enc, &nal, &nnal);
568 avctx->extradata = p = av_malloc(s);
570 return AVERROR(ENOMEM);
572 for (i = 0; i < nnal; i++) {
573 /* Don't put the SEI in extradata. */
574 if (nal[i].i_type == NAL_SEI) {
575 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
576 x4->sei_size = nal[i].i_payload;
577 x4->sei = av_malloc(x4->sei_size);
579 return AVERROR(ENOMEM);
580 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
583 memcpy(p, nal[i].p_payload, nal[i].i_payload);
584 p += nal[i].i_payload;
586 avctx->extradata_size = p - avctx->extradata;
592 static const enum AVPixelFormat pix_fmts_8bit[] = {
603 static const enum AVPixelFormat pix_fmts_9bit[] = {
608 static const enum AVPixelFormat pix_fmts_10bit[] = {
609 AV_PIX_FMT_YUV420P10,
610 AV_PIX_FMT_YUV422P10,
611 AV_PIX_FMT_YUV444P10,
616 static av_cold void X264_init_static(AVCodec *codec)
618 if (x264_bit_depth == 8)
619 codec->pix_fmts = pix_fmts_8bit;
620 else if (x264_bit_depth == 9)
621 codec->pix_fmts = pix_fmts_9bit;
622 else if (x264_bit_depth == 10)
623 codec->pix_fmts = pix_fmts_10bit;
626 #define OFFSET(x) offsetof(X264Context, x)
627 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
628 static const AVOption options[] = {
629 { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
630 { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
631 { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
632 { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
633 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
634 { "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 },
635 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
636 { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
637 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
638 { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
639 { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
640 { "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},
641 { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
642 { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
643 { "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 },
644 { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
645 { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
646 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
647 { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
648 { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
649 { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
650 { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
651 { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
652 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
653 { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
654 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
655 { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
656 { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
657 { "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 },
658 { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
659 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
660 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
661 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
662 { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
663 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
664 { "partitions", "A comma-separated list of partitions to consider. "
665 "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
666 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
667 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
668 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
669 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
670 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
671 { "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 },
672 { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
673 { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
674 "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
675 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
676 { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
677 { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
678 { "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 },
682 static const AVCodecDefault x264_defaults[] = {
686 { "i_qfactor", "-1" },
693 { "sc_threshold", "-1" },
696 { "me_range", "-1" },
697 { "me_method", "-1" },
699 { "b_strategy", "-1" },
700 { "keyint_min", "-1" },
703 { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
704 { "thread_type", "0" },
705 { "flags", "+cgop" },
706 { "rc_init_occupancy","-1" },
710 #if CONFIG_LIBX264_ENCODER
711 static const AVClass class = {
712 .class_name = "libx264",
713 .item_name = av_default_item_name,
715 .version = LIBAVUTIL_VERSION_INT,
718 AVCodec ff_libx264_encoder = {
720 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
721 .type = AVMEDIA_TYPE_VIDEO,
722 .id = AV_CODEC_ID_H264,
723 .priv_data_size = sizeof(X264Context),
725 .encode2 = X264_frame,
727 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
728 .priv_class = &class,
729 .defaults = x264_defaults,
730 .init_static_data = X264_init_static,
731 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
732 FF_CODEC_CAP_INIT_CLEANUP,
736 #if CONFIG_LIBX262_ENCODER
737 static const AVClass X262_class = {
738 .class_name = "libx262",
739 .item_name = av_default_item_name,
741 .version = LIBAVUTIL_VERSION_INT,
744 AVCodec ff_libx262_encoder = {
746 .long_name = NULL_IF_CONFIG_SMALL("libx262 MPEG2VIDEO"),
747 .type = AVMEDIA_TYPE_VIDEO,
748 .id = AV_CODEC_ID_MPEG2VIDEO,
749 .priv_data_size = sizeof(X264Context),
751 .encode2 = X264_frame,
753 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
754 .priv_class = &X262_class,
755 .defaults = x264_defaults,
756 .pix_fmts = pix_fmts_8bit,
757 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
758 FF_CODEC_CAP_INIT_CLEANUP,