2 * H.264 encoding using the x264 library
3 * Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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"
30 #define X264_API_IMPORTS 1
40 typedef struct X264Context {
85 static void X264_log(void *p, int level, const char *fmt, va_list args)
87 static const int level_map[] = {
88 [X264_LOG_ERROR] = AV_LOG_ERROR,
89 [X264_LOG_WARNING] = AV_LOG_WARNING,
90 [X264_LOG_INFO] = AV_LOG_INFO,
91 [X264_LOG_DEBUG] = AV_LOG_DEBUG
94 if (level < 0 || level > X264_LOG_DEBUG)
97 av_vlog(p, level_map[level], fmt, args);
101 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
102 x264_nal_t *nals, int nnal)
104 X264Context *x4 = ctx->priv_data;
106 int i, size = x4->sei_size, ret;
111 for (i = 0; i < nnal; i++)
112 size += nals[i].i_payload;
114 if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
119 /* Write the SEI as part of the first frame. */
120 if (x4->sei_size > 0 && nnal > 0) {
121 if (x4->sei_size > size) {
122 av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
125 memcpy(p, x4->sei, x4->sei_size);
131 for (i = 0; i < nnal; i++){
132 memcpy(p, nals[i].p_payload, nals[i].i_payload);
133 p += nals[i].i_payload;
139 static int avfmt2_num_planes(int avfmt)
142 case AV_PIX_FMT_YUV420P:
143 case AV_PIX_FMT_YUVJ420P:
144 case AV_PIX_FMT_YUV420P9:
145 case AV_PIX_FMT_YUV420P10:
146 case AV_PIX_FMT_YUV444P:
149 case AV_PIX_FMT_BGR24:
150 case AV_PIX_FMT_RGB24:
158 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
161 X264Context *x4 = ctx->priv_data;
164 x264_picture_t pic_out = {0};
166 x264_picture_init( &x4->pic );
167 x4->pic.img.i_csp = x4->params.i_csp;
168 if (x264_bit_depth > 8)
169 x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
170 x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
173 for (i = 0; i < x4->pic.img.i_plane; i++) {
174 x4->pic.img.plane[i] = frame->data[i];
175 x4->pic.img.i_stride[i] = frame->linesize[i];
178 x4->pic.i_pts = frame->pts;
180 frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
181 frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
182 frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
184 if (x4->params.b_interlaced && x4->params.b_tff != frame->top_field_first) {
185 x4->params.b_tff = frame->top_field_first;
186 x264_encoder_reconfig(x4->enc, &x4->params);
188 if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
189 x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
190 x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
191 x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
192 x264_encoder_reconfig(x4->enc, &x4->params);
197 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
200 ret = encode_nals(ctx, pkt, nal, nnal);
203 } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
205 pkt->pts = pic_out.i_pts;
206 pkt->dts = pic_out.i_dts;
208 switch (pic_out.i_type) {
211 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
214 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
218 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
222 pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
224 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
230 static av_cold int X264_close(AVCodecContext *avctx)
232 X264Context *x4 = avctx->priv_data;
234 av_freep(&avctx->extradata);
238 x264_encoder_close(x4->enc);
243 #define OPT_STR(opt, param) \
246 if (param!=NULL && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
247 if(ret == X264_PARAM_BAD_NAME) \
248 av_log(avctx, AV_LOG_ERROR, \
249 "bad option '%s': '%s'\n", opt, param); \
251 av_log(avctx, AV_LOG_ERROR, \
252 "bad value for '%s': '%s'\n", opt, param); \
257 static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
260 case AV_PIX_FMT_YUV420P:
261 case AV_PIX_FMT_YUVJ420P:
262 case AV_PIX_FMT_YUV420P9:
263 case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
264 case AV_PIX_FMT_YUV422P:
265 case AV_PIX_FMT_YUVJ422P:
266 case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
267 case AV_PIX_FMT_YUV444P:
268 case AV_PIX_FMT_YUVJ444P:
269 case AV_PIX_FMT_YUV444P9:
270 case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
272 case AV_PIX_FMT_BGR24:
275 case AV_PIX_FMT_RGB24:
278 case AV_PIX_FMT_NV12: return X264_CSP_NV12;
279 case AV_PIX_FMT_NV16:
280 case AV_PIX_FMT_NV20: return X264_CSP_NV16;
285 #define PARSE_X264_OPT(name, var)\
286 if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
287 av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
288 return AVERROR(EINVAL);\
291 static av_cold int X264_init(AVCodecContext *avctx)
293 X264Context *x4 = avctx->priv_data;
296 x264_param_default(&x4->params);
298 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
300 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
301 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
302 if (x4->preset || x4->tune)
303 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
305 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
306 av_log(avctx, AV_LOG_INFO, "Possible presets:");
307 for (i = 0; x264_preset_names[i]; i++)
308 av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
309 av_log(avctx, AV_LOG_INFO, "\n");
310 av_log(avctx, AV_LOG_INFO, "Possible tunes:");
311 for (i = 0; x264_tune_names[i]; i++)
312 av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
313 av_log(avctx, AV_LOG_INFO, "\n");
314 return AVERROR(EINVAL);
317 if (avctx->level > 0)
318 x4->params.i_level_idc = avctx->level;
320 x4->params.pf_log = X264_log;
321 x4->params.p_log_private = avctx;
322 x4->params.i_log_level = X264_LOG_DEBUG;
323 x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
325 OPT_STR("weightp", x4->wpredp);
327 if (avctx->bit_rate) {
328 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
329 x4->params.rc.i_rc_method = X264_RC_ABR;
331 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
332 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
333 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
334 if (avctx->flags & CODEC_FLAG_PASS2) {
335 x4->params.rc.b_stat_read = 1;
338 x4->params.rc.i_rc_method = X264_RC_CRF;
339 x4->params.rc.f_rf_constant = x4->crf;
340 } else if (x4->cqp >= 0) {
341 x4->params.rc.i_rc_method = X264_RC_CQP;
342 x4->params.rc.i_qp_constant = x4->cqp;
345 if (x4->crf_max >= 0)
346 x4->params.rc.f_rf_constant_max = x4->crf_max;
349 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
350 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
351 x4->params.rc.f_vbv_buffer_init =
352 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
355 OPT_STR("level", x4->level);
358 const char *p= x4->x264opts;
360 char param[256]={0}, val[256]={0};
361 if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
370 if (avctx->i_quant_factor > 0)
371 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
373 if (avctx->me_method == ME_EPZS)
374 x4->params.analyse.i_me_method = X264_ME_DIA;
375 else if (avctx->me_method == ME_HEX)
376 x4->params.analyse.i_me_method = X264_ME_HEX;
377 else if (avctx->me_method == ME_UMH)
378 x4->params.analyse.i_me_method = X264_ME_UMH;
379 else if (avctx->me_method == ME_FULL)
380 x4->params.analyse.i_me_method = X264_ME_ESA;
381 else if (avctx->me_method == ME_TESA)
382 x4->params.analyse.i_me_method = X264_ME_TESA;
384 if (avctx->gop_size >= 0)
385 x4->params.i_keyint_max = avctx->gop_size;
386 if (avctx->max_b_frames >= 0)
387 x4->params.i_bframe = avctx->max_b_frames;
388 if (avctx->scenechange_threshold >= 0)
389 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
390 if (avctx->qmin >= 0)
391 x4->params.rc.i_qp_min = avctx->qmin;
392 if (avctx->qmax >= 0)
393 x4->params.rc.i_qp_max = avctx->qmax;
394 if (avctx->max_qdiff >= 0)
395 x4->params.rc.i_qp_step = avctx->max_qdiff;
396 if (avctx->qblur >= 0)
397 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
398 if (avctx->qcompress >= 0)
399 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
400 if (avctx->refs >= 0)
401 x4->params.i_frame_reference = avctx->refs;
402 if (avctx->trellis >= 0)
403 x4->params.analyse.i_trellis = avctx->trellis;
404 if (avctx->me_range >= 0)
405 x4->params.analyse.i_me_range = avctx->me_range;
406 if (avctx->noise_reduction >= 0)
407 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
408 if (avctx->me_subpel_quality >= 0)
409 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
410 if (avctx->b_frame_strategy >= 0)
411 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
412 if (avctx->keyint_min >= 0)
413 x4->params.i_keyint_min = avctx->keyint_min;
414 if (avctx->coder_type >= 0)
415 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
416 if (avctx->me_cmp >= 0)
417 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
419 if (x4->aq_mode >= 0)
420 x4->params.rc.i_aq_mode = x4->aq_mode;
421 if (x4->aq_strength >= 0)
422 x4->params.rc.f_aq_strength = x4->aq_strength;
423 PARSE_X264_OPT("psy-rd", psy_rd);
424 PARSE_X264_OPT("deblock", deblock);
425 PARSE_X264_OPT("partitions", partitions);
426 PARSE_X264_OPT("stats", stats);
428 x4->params.analyse.b_psy = x4->psy;
429 if (x4->rc_lookahead >= 0)
430 x4->params.rc.i_lookahead = x4->rc_lookahead;
431 if (x4->weightp >= 0)
432 x4->params.analyse.i_weighted_pred = x4->weightp;
433 if (x4->weightb >= 0)
434 x4->params.analyse.b_weighted_bipred = x4->weightb;
435 if (x4->cplxblur >= 0)
436 x4->params.rc.f_complexity_blur = x4->cplxblur;
439 x4->params.analyse.b_ssim = x4->ssim;
440 if (x4->intra_refresh >= 0)
441 x4->params.b_intra_refresh = x4->intra_refresh;
442 if (x4->bluray_compat >= 0) {
443 x4->params.b_bluray_compat = x4->bluray_compat;
444 x4->params.b_vfr_input = 0;
446 if (x4->b_bias != INT_MIN)
447 x4->params.i_bframe_bias = x4->b_bias;
448 if (x4->b_pyramid >= 0)
449 x4->params.i_bframe_pyramid = x4->b_pyramid;
450 if (x4->mixed_refs >= 0)
451 x4->params.analyse.b_mixed_references = x4->mixed_refs;
453 x4->params.analyse.b_transform_8x8 = x4->dct8x8;
454 if (x4->fast_pskip >= 0)
455 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
457 x4->params.b_aud = x4->aud;
459 x4->params.rc.b_mb_tree = x4->mbtree;
460 if (x4->direct_pred >= 0)
461 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
463 if (x4->slice_max_size >= 0)
464 x4->params.i_slice_max_size = x4->slice_max_size;
467 * Allow x264 to be instructed through AVCodecContext about the maximum
468 * size of the RTP payload. For example, this enables the production of
469 * payload suitable for the H.264 RTP packetization-mode 0 i.e. single
470 * NAL unit per RTP packet.
472 if (avctx->rtp_payload_size)
473 x4->params.i_slice_max_size = avctx->rtp_payload_size;
476 if (x4->fastfirstpass)
477 x264_param_apply_fastfirstpass(&x4->params);
479 /* Allow specifying the x264 profile through AVCodecContext. */
481 switch (avctx->profile) {
482 case FF_PROFILE_H264_BASELINE:
483 x4->profile = av_strdup("baseline");
485 case FF_PROFILE_H264_HIGH:
486 x4->profile = av_strdup("high");
488 case FF_PROFILE_H264_HIGH_10:
489 x4->profile = av_strdup("high10");
491 case FF_PROFILE_H264_HIGH_422:
492 x4->profile = av_strdup("high422");
494 case FF_PROFILE_H264_HIGH_444:
495 x4->profile = av_strdup("high444");
497 case FF_PROFILE_H264_MAIN:
498 x4->profile = av_strdup("main");
504 if (x4->nal_hrd >= 0)
505 x4->params.i_nal_hrd = x4->nal_hrd;
508 if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
510 av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
511 av_log(avctx, AV_LOG_INFO, "Possible profiles:");
512 for (i = 0; x264_profile_names[i]; i++)
513 av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
514 av_log(avctx, AV_LOG_INFO, "\n");
515 return AVERROR(EINVAL);
518 x4->params.i_width = avctx->width;
519 x4->params.i_height = avctx->height;
520 av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
521 x4->params.vui.i_sar_width = sw;
522 x4->params.vui.i_sar_height = sh;
523 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
524 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
526 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
528 x4->params.i_threads = avctx->thread_count;
529 if (avctx->thread_type)
530 x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
532 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
534 x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
536 x4->params.i_slice_count = avctx->slices;
538 x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
539 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
540 avctx->pix_fmt == AV_PIX_FMT_YUVJ444P;
542 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
543 x4->params.b_repeat_headers = 0;
545 if (x4->x264_params) {
546 AVDictionary *dict = NULL;
547 AVDictionaryEntry *en = NULL;
549 if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
550 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
551 if (x264_param_parse(&x4->params, en->key, en->value) < 0)
552 av_log(avctx, AV_LOG_WARNING,
553 "Error parsing option '%s = %s'.\n",
561 // update AVCodecContext with x264 parameters
562 avctx->has_b_frames = x4->params.i_bframe ?
563 x4->params.i_bframe_pyramid ? 2 : 1 : 0;
564 if (avctx->max_b_frames < 0)
565 avctx->max_b_frames = 0;
567 avctx->bit_rate = x4->params.rc.i_bitrate*1000;
569 x4->enc = x264_encoder_open(&x4->params);
573 avctx->coded_frame = &x4->out_pic;
575 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
580 s = x264_encoder_headers(x4->enc, &nal, &nnal);
581 avctx->extradata = p = av_malloc(s);
583 for (i = 0; i < nnal; i++) {
584 /* Don't put the SEI in extradata. */
585 if (nal[i].i_type == NAL_SEI) {
586 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
587 x4->sei_size = nal[i].i_payload;
588 x4->sei = av_malloc(x4->sei_size);
589 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
592 memcpy(p, nal[i].p_payload, nal[i].i_payload);
593 p += nal[i].i_payload;
595 avctx->extradata_size = p - avctx->extradata;
601 static const enum AVPixelFormat pix_fmts_8bit[] = {
612 static const enum AVPixelFormat pix_fmts_9bit[] = {
617 static const enum AVPixelFormat pix_fmts_10bit[] = {
618 AV_PIX_FMT_YUV420P10,
619 AV_PIX_FMT_YUV422P10,
620 AV_PIX_FMT_YUV444P10,
624 static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
632 static av_cold void X264_init_static(AVCodec *codec)
634 if (x264_bit_depth == 8)
635 codec->pix_fmts = pix_fmts_8bit;
636 else if (x264_bit_depth == 9)
637 codec->pix_fmts = pix_fmts_9bit;
638 else if (x264_bit_depth == 10)
639 codec->pix_fmts = pix_fmts_10bit;
642 #define OFFSET(x) offsetof(X264Context, x)
643 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
644 static const AVOption options[] = {
645 { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
646 { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
647 { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
648 { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
649 {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
650 {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
651 {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
652 {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
653 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
654 { "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 },
655 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
656 { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
657 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
658 { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
659 { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
660 { "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},
661 { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
662 { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
663 { "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 },
664 { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
665 { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
666 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
667 { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
668 { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
669 { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
670 { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
671 { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
672 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
673 { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
674 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
675 { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
676 { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
677 { "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 },
678 { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
679 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
680 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
681 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
682 { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
683 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
684 { "partitions", "A comma-separated list of partitions to consider. "
685 "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
686 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
687 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
688 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
689 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
690 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
691 { "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 },
692 { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
693 { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
694 "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
695 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
696 { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
697 { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
698 { "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 },
702 static const AVClass x264_class = {
703 .class_name = "libx264",
704 .item_name = av_default_item_name,
706 .version = LIBAVUTIL_VERSION_INT,
709 static const AVClass rgbclass = {
710 .class_name = "libx264rgb",
711 .item_name = av_default_item_name,
713 .version = LIBAVUTIL_VERSION_INT,
716 static const AVCodecDefault x264_defaults[] = {
721 { "i_qfactor", "-1" },
727 // { "rc_lookahead", "-1" },
729 { "sc_threshold", "-1" },
732 { "me_range", "-1" },
733 { "me_method", "-1" },
735 { "b_strategy", "-1" },
736 { "keyint_min", "-1" },
739 { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
740 { "thread_type", "0" },
741 { "flags", "+cgop" },
742 { "rc_init_occupancy","-1" },
746 AVCodec ff_libx264_encoder = {
748 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
749 .type = AVMEDIA_TYPE_VIDEO,
750 .id = AV_CODEC_ID_H264,
751 .priv_data_size = sizeof(X264Context),
753 .encode2 = X264_frame,
755 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
756 .priv_class = &x264_class,
757 .defaults = x264_defaults,
758 .init_static_data = X264_init_static,
761 AVCodec ff_libx264rgb_encoder = {
762 .name = "libx264rgb",
763 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
764 .type = AVMEDIA_TYPE_VIDEO,
765 .id = AV_CODEC_ID_H264,
766 .priv_data_size = sizeof(X264Context),
768 .encode2 = X264_frame,
770 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
771 .priv_class = &rgbclass,
772 .defaults = x264_defaults,
773 .pix_fmts = pix_fmts_8bit_rgb,