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"
35 typedef struct X264Context {
79 static void X264_log(void *p, int level, const char *fmt, va_list args)
81 static const int level_map[] = {
82 [X264_LOG_ERROR] = AV_LOG_ERROR,
83 [X264_LOG_WARNING] = AV_LOG_WARNING,
84 [X264_LOG_INFO] = AV_LOG_INFO,
85 [X264_LOG_DEBUG] = AV_LOG_DEBUG
88 if (level < 0 || level > X264_LOG_DEBUG)
91 av_vlog(p, level_map[level], fmt, args);
95 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
96 x264_nal_t *nals, int nnal)
98 X264Context *x4 = ctx->priv_data;
100 int i, size = x4->sei_size, ret;
105 for (i = 0; i < nnal; i++)
106 size += nals[i].i_payload;
108 if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
113 /* Write the SEI as part of the first frame. */
114 if (x4->sei_size > 0 && nnal > 0) {
115 if (x4->sei_size > size) {
116 av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
119 memcpy(p, x4->sei, x4->sei_size);
125 for (i = 0; i < nnal; i++){
126 memcpy(p, nals[i].p_payload, nals[i].i_payload);
127 p += nals[i].i_payload;
133 static int avfmt2_num_planes(int avfmt)
136 case AV_PIX_FMT_YUV420P:
137 case AV_PIX_FMT_YUVJ420P:
138 case AV_PIX_FMT_YUV420P9:
139 case AV_PIX_FMT_YUV420P10:
140 case AV_PIX_FMT_YUV444P:
143 case AV_PIX_FMT_BGR24:
144 case AV_PIX_FMT_RGB24:
152 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
155 X264Context *x4 = ctx->priv_data;
158 x264_picture_t pic_out;
160 x264_picture_init( &x4->pic );
161 x4->pic.img.i_csp = x4->params.i_csp;
162 if (x264_bit_depth > 8)
163 x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
164 x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
167 for (i = 0; i < x4->pic.img.i_plane; i++) {
168 x4->pic.img.plane[i] = frame->data[i];
169 x4->pic.img.i_stride[i] = frame->linesize[i];
172 x4->pic.i_pts = frame->pts;
174 frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
175 frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
176 frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
178 if (x4->params.b_tff != frame->top_field_first) {
179 x4->params.b_tff = frame->top_field_first;
180 x264_encoder_reconfig(x4->enc, &x4->params);
182 if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
183 x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
184 x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
185 x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
186 x264_encoder_reconfig(x4->enc, &x4->params);
191 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
194 ret = encode_nals(ctx, pkt, nal, nnal);
197 } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
199 pkt->pts = pic_out.i_pts;
200 pkt->dts = pic_out.i_dts;
202 switch (pic_out.i_type) {
205 x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
208 x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
212 x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
216 pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
218 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
224 static av_cold int X264_close(AVCodecContext *avctx)
226 X264Context *x4 = avctx->priv_data;
228 av_freep(&avctx->extradata);
232 x264_encoder_close(x4->enc);
237 #define OPT_STR(opt, param) \
240 if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
241 if(ret == X264_PARAM_BAD_NAME) \
242 av_log(avctx, AV_LOG_ERROR, \
243 "bad option '%s': '%s'\n", opt, param); \
245 av_log(avctx, AV_LOG_ERROR, \
246 "bad value for '%s': '%s'\n", opt, param); \
251 static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
254 case AV_PIX_FMT_YUV420P:
255 case AV_PIX_FMT_YUVJ420P:
256 case AV_PIX_FMT_YUV420P9:
257 case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
258 case AV_PIX_FMT_YUV422P:
259 case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
260 case AV_PIX_FMT_YUV444P:
261 case AV_PIX_FMT_YUV444P9:
262 case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
264 case AV_PIX_FMT_BGR24:
267 case AV_PIX_FMT_RGB24:
274 #define PARSE_X264_OPT(name, var)\
275 if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
276 av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
277 return AVERROR(EINVAL);\
280 static av_cold int X264_init(AVCodecContext *avctx)
282 X264Context *x4 = avctx->priv_data;
285 x264_param_default(&x4->params);
287 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
289 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
290 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
291 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
292 if (x4->preset || x4->tune)
293 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
295 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
296 av_log(avctx, AV_LOG_INFO, "Possible presets:");
297 for (i = 0; x264_preset_names[i]; i++)
298 av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
299 av_log(avctx, AV_LOG_INFO, "\n");
300 av_log(avctx, AV_LOG_INFO, "Possible tunes:");
301 for (i = 0; x264_tune_names[i]; i++)
302 av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
303 av_log(avctx, AV_LOG_INFO, "\n");
304 return AVERROR(EINVAL);
307 if (avctx->level > 0)
308 x4->params.i_level_idc = avctx->level;
310 x4->params.pf_log = X264_log;
311 x4->params.p_log_private = avctx;
312 x4->params.i_log_level = X264_LOG_DEBUG;
313 x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
315 OPT_STR("weightp", x4->wpredp);
317 if (avctx->bit_rate) {
318 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
319 x4->params.rc.i_rc_method = X264_RC_ABR;
321 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
322 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
323 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
324 if (avctx->flags & CODEC_FLAG_PASS2) {
325 x4->params.rc.b_stat_read = 1;
328 x4->params.rc.i_rc_method = X264_RC_CRF;
329 x4->params.rc.f_rf_constant = x4->crf;
330 } else if (x4->cqp >= 0) {
331 x4->params.rc.i_rc_method = X264_RC_CQP;
332 x4->params.rc.i_qp_constant = x4->cqp;
335 if (x4->crf_max >= 0)
336 x4->params.rc.f_rf_constant_max = x4->crf_max;
339 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
340 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
341 x4->params.rc.f_vbv_buffer_init =
342 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
345 OPT_STR("level", x4->level);
348 const char *p= x4->x264opts;
350 char param[256]={0}, val[256]={0};
351 if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
360 if (avctx->me_method == ME_EPZS)
361 x4->params.analyse.i_me_method = X264_ME_DIA;
362 else if (avctx->me_method == ME_HEX)
363 x4->params.analyse.i_me_method = X264_ME_HEX;
364 else if (avctx->me_method == ME_UMH)
365 x4->params.analyse.i_me_method = X264_ME_UMH;
366 else if (avctx->me_method == ME_FULL)
367 x4->params.analyse.i_me_method = X264_ME_ESA;
368 else if (avctx->me_method == ME_TESA)
369 x4->params.analyse.i_me_method = X264_ME_TESA;
371 if (avctx->gop_size >= 0)
372 x4->params.i_keyint_max = avctx->gop_size;
373 if (avctx->max_b_frames >= 0)
374 x4->params.i_bframe = avctx->max_b_frames;
375 if (avctx->scenechange_threshold >= 0)
376 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
377 if (avctx->qmin >= 0)
378 x4->params.rc.i_qp_min = avctx->qmin;
379 if (avctx->qmax >= 0)
380 x4->params.rc.i_qp_max = avctx->qmax;
381 if (avctx->max_qdiff >= 0)
382 x4->params.rc.i_qp_step = avctx->max_qdiff;
383 if (avctx->qblur >= 0)
384 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
385 if (avctx->qcompress >= 0)
386 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
387 if (avctx->refs >= 0)
388 x4->params.i_frame_reference = avctx->refs;
389 if (avctx->trellis >= 0)
390 x4->params.analyse.i_trellis = avctx->trellis;
391 if (avctx->me_range >= 0)
392 x4->params.analyse.i_me_range = avctx->me_range;
393 if (avctx->noise_reduction >= 0)
394 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
395 if (avctx->me_subpel_quality >= 0)
396 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
397 if (avctx->b_frame_strategy >= 0)
398 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
399 if (avctx->keyint_min >= 0)
400 x4->params.i_keyint_min = avctx->keyint_min;
401 if (avctx->coder_type >= 0)
402 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
403 if (avctx->me_cmp >= 0)
404 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
406 if (x4->aq_mode >= 0)
407 x4->params.rc.i_aq_mode = x4->aq_mode;
408 if (x4->aq_strength >= 0)
409 x4->params.rc.f_aq_strength = x4->aq_strength;
410 PARSE_X264_OPT("psy-rd", psy_rd);
411 PARSE_X264_OPT("deblock", deblock);
412 PARSE_X264_OPT("partitions", partitions);
413 PARSE_X264_OPT("stats", stats);
415 x4->params.analyse.b_psy = x4->psy;
416 if (x4->rc_lookahead >= 0)
417 x4->params.rc.i_lookahead = x4->rc_lookahead;
418 if (x4->weightp >= 0)
419 x4->params.analyse.i_weighted_pred = x4->weightp;
420 if (x4->weightb >= 0)
421 x4->params.analyse.b_weighted_bipred = x4->weightb;
422 if (x4->cplxblur >= 0)
423 x4->params.rc.f_complexity_blur = x4->cplxblur;
426 x4->params.analyse.b_ssim = x4->ssim;
427 if (x4->intra_refresh >= 0)
428 x4->params.b_intra_refresh = x4->intra_refresh;
429 if (x4->b_bias != INT_MIN)
430 x4->params.i_bframe_bias = x4->b_bias;
431 if (x4->b_pyramid >= 0)
432 x4->params.i_bframe_pyramid = x4->b_pyramid;
433 if (x4->mixed_refs >= 0)
434 x4->params.analyse.b_mixed_references = x4->mixed_refs;
436 x4->params.analyse.b_transform_8x8 = x4->dct8x8;
437 if (x4->fast_pskip >= 0)
438 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
440 x4->params.b_aud = x4->aud;
442 x4->params.rc.b_mb_tree = x4->mbtree;
443 if (x4->direct_pred >= 0)
444 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
446 if (x4->slice_max_size >= 0)
447 x4->params.i_slice_max_size = x4->slice_max_size;
450 * Allow x264 to be instructed through AVCodecContext about the maximum
451 * size of the RTP payload. For example, this enables the production of
452 * payload suitable for the H.264 RTP packetization-mode 0 i.e. single
453 * NAL unit per RTP packet.
455 if (avctx->rtp_payload_size)
456 x4->params.i_slice_max_size = avctx->rtp_payload_size;
459 if (x4->fastfirstpass)
460 x264_param_apply_fastfirstpass(&x4->params);
462 /* Allow specifying the x264 profile through AVCodecContext. */
464 switch (avctx->profile) {
465 case FF_PROFILE_H264_BASELINE:
466 x4->profile = av_strdup("baseline");
468 case FF_PROFILE_H264_HIGH:
469 x4->profile = av_strdup("high");
471 case FF_PROFILE_H264_HIGH_10:
472 x4->profile = av_strdup("high10");
474 case FF_PROFILE_H264_HIGH_422:
475 x4->profile = av_strdup("high422");
477 case FF_PROFILE_H264_HIGH_444:
478 x4->profile = av_strdup("high444");
480 case FF_PROFILE_H264_MAIN:
481 x4->profile = av_strdup("main");
487 if (x4->nal_hrd >= 0)
488 x4->params.i_nal_hrd = x4->nal_hrd;
491 if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
493 av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
494 av_log(avctx, AV_LOG_INFO, "Possible profiles:");
495 for (i = 0; x264_profile_names[i]; i++)
496 av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
497 av_log(avctx, AV_LOG_INFO, "\n");
498 return AVERROR(EINVAL);
501 x4->params.i_width = avctx->width;
502 x4->params.i_height = avctx->height;
503 av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
504 x4->params.vui.i_sar_width = sw;
505 x4->params.vui.i_sar_height = sh;
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;
523 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
524 x4->params.b_repeat_headers = 0;
526 if (x4->x264_params) {
527 AVDictionary *dict = NULL;
528 AVDictionaryEntry *en = NULL;
530 if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
531 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
532 if (x264_param_parse(&x4->params, en->key, en->value) < 0)
533 av_log(avctx, AV_LOG_WARNING,
534 "Error parsing option '%s = %s'.\n",
542 // update AVCodecContext with x264 parameters
543 avctx->has_b_frames = x4->params.i_bframe ?
544 x4->params.i_bframe_pyramid ? 2 : 1 : 0;
545 if (avctx->max_b_frames < 0)
546 avctx->max_b_frames = 0;
548 avctx->bit_rate = x4->params.rc.i_bitrate*1000;
550 x4->enc = x264_encoder_open(&x4->params);
554 avctx->coded_frame = &x4->out_pic;
556 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
561 s = x264_encoder_headers(x4->enc, &nal, &nnal);
562 avctx->extradata = p = av_malloc(s);
564 for (i = 0; i < nnal; i++) {
565 /* Don't put the SEI in extradata. */
566 if (nal[i].i_type == NAL_SEI) {
567 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
568 x4->sei_size = nal[i].i_payload;
569 x4->sei = av_malloc(x4->sei_size);
570 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
573 memcpy(p, nal[i].p_payload, nal[i].i_payload);
574 p += nal[i].i_payload;
576 avctx->extradata_size = p - avctx->extradata;
582 static const enum AVPixelFormat pix_fmts_8bit[] = {
589 static const enum AVPixelFormat pix_fmts_9bit[] = {
594 static const enum AVPixelFormat pix_fmts_10bit[] = {
595 AV_PIX_FMT_YUV420P10,
596 AV_PIX_FMT_YUV422P10,
597 AV_PIX_FMT_YUV444P10,
600 static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
608 static av_cold void X264_init_static(AVCodec *codec)
610 if (x264_bit_depth == 8)
611 codec->pix_fmts = pix_fmts_8bit;
612 else if (x264_bit_depth == 9)
613 codec->pix_fmts = pix_fmts_9bit;
614 else if (x264_bit_depth == 10)
615 codec->pix_fmts = pix_fmts_10bit;
618 #define OFFSET(x) offsetof(X264Context, x)
619 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
620 static const AVOption options[] = {
621 { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
622 { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
623 { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
624 { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
625 {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
626 {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
627 {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
628 {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
629 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
630 { "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 },
631 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
632 { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
633 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
634 { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
635 { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
636 { "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},
637 { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
638 { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
639 { "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 },
640 { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
641 { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
642 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
643 { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
644 { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
645 { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
646 { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
647 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
648 { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
649 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
650 { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
651 { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
652 { "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 },
653 { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
654 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
655 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
656 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
657 { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
658 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
659 { "partitions", "A comma-separated list of partitions to consider. "
660 "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
661 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
662 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
663 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
664 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
665 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
666 { "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 },
667 { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
668 { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
669 "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
670 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
671 { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
672 { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
673 { "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 },
677 static const AVClass class = {
678 .class_name = "libx264",
679 .item_name = av_default_item_name,
681 .version = LIBAVUTIL_VERSION_INT,
684 static const AVClass rgbclass = {
685 .class_name = "libx264rgb",
686 .item_name = av_default_item_name,
688 .version = LIBAVUTIL_VERSION_INT,
691 static const AVCodecDefault x264_defaults[] = {
701 // { "rc_lookahead", "-1" },
703 { "sc_threshold", "-1" },
706 { "me_range", "-1" },
707 { "me_method", "-1" },
709 { "b_strategy", "-1" },
710 { "keyint_min", "-1" },
713 { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
714 { "thread_type", "0" },
715 { "flags", "+cgop" },
716 { "rc_init_occupancy","-1" },
720 AVCodec ff_libx264_encoder = {
722 .type = AVMEDIA_TYPE_VIDEO,
723 .id = AV_CODEC_ID_H264,
724 .priv_data_size = sizeof(X264Context),
726 .encode2 = X264_frame,
728 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
729 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
730 .priv_class = &class,
731 .defaults = x264_defaults,
732 .init_static_data = X264_init_static,
735 AVCodec ff_libx264rgb_encoder = {
736 .name = "libx264rgb",
737 .type = AVMEDIA_TYPE_VIDEO,
738 .id = AV_CODEC_ID_H264,
739 .priv_data_size = sizeof(X264Context),
741 .encode2 = X264_frame,
743 .capabilities = CODEC_CAP_DELAY,
744 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
745 .priv_class = &rgbclass,
746 .defaults = x264_defaults,
747 .pix_fmts = pix_fmts_8bit_rgb,