2 * Copyright (c) 2010, Google, Inc.
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * VP8 encoder support via libvpx
26 #define VPX_DISABLE_CTRL_TYPECHECKS 1
27 #define VPX_CODEC_DISABLE_COMPAT 1
28 #include <vpx/vpx_encoder.h>
29 #include <vpx/vp8cx.h>
32 #include "libavutil/base64.h"
33 #include "libavutil/opt.h"
36 * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
37 * One encoded frame returned from the library.
39 struct FrameListData {
40 void *buf; /**< compressed data buffer */
41 size_t sz; /**< length of compressed data */
42 int64_t pts; /**< time stamp to show frame
43 (in timebase units) */
44 unsigned long duration; /**< duration to show frame
45 (in timebase units) */
46 uint32_t flags; /**< flags for this frame */
47 struct FrameListData *next;
50 typedef struct VP8EncoderContext {
52 struct vpx_codec_ctx encoder;
53 struct vpx_image rawimg;
54 struct vpx_fixed_buf twopass_stats;
55 int deadline; //i.e., RT/GOOD/BEST
56 struct FrameListData *coded_frame_list;
61 * VP8 specific flags, see VP8F_* below.
64 #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
65 #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation
72 #define V AV_OPT_FLAG_VIDEO_PARAM
73 #define E AV_OPT_FLAG_ENCODING_PARAM
75 static const AVOption options[]={
76 {"speed", "", offsetof(VP8Context, cpuused), FF_OPT_TYPE_INT, 3, -16, 16, V|E},
77 {"quality", "", offsetof(VP8Context, deadline), FF_OPT_TYPE_INT, VPX_DL_GOOD_QUALITY, INT_MIN, INT_MAX, V|E, "quality"},
78 {"best", NULL, 0, FF_OPT_TYPE_CONST, VPX_DL_BEST_QUALITY, INT_MIN, INT_MAX, V|E, "quality"},
79 {"good", NULL, 0, FF_OPT_TYPE_CONST, VPX_DL_GOOD_QUALITY, INT_MIN, INT_MAX, V|E, "quality"},
80 {"realtime", NULL, 0, FF_OPT_TYPE_CONST, VPX_DL_REALTIME, INT_MIN, INT_MAX, V|E, "quality"},
81 {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, 0, 0, UINT_MAX, V|E, "flags"},
82 {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, VP8F_ERROR_RESILIENT, INT_MIN, INT_MAX, V|E, "flags"},
83 {"altref", "enable use of alternate reference frames (VP8/2-pass only)", 0, FF_OPT_TYPE_CONST, VP8F_AUTO_ALT_REF, INT_MIN, INT_MAX, V|E, "flags"},
84 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), FF_OPT_TYPE_INT, 0, 0, 15, V|E},
85 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), FF_OPT_TYPE_INT, 3, 0, 6, V|E},
86 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), FF_OPT_TYPE_INT, 3, 1, 3, V|E},
89 static const AVClass class = { "libvpx", av_default_item_name, options, LIBAVUTIL_VERSION_INT };
94 /** String mappings for enum vp8e_enc_control_id */
95 static const char *ctlidstr[] = {
96 [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
97 [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
98 [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
99 [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
100 [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
101 [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
102 [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
103 [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
104 [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
105 [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
106 [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
107 [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
108 [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
109 [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
110 [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
111 [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
112 [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
115 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
117 VP8Context *ctx = avctx->priv_data;
118 const char *error = vpx_codec_error(&ctx->encoder);
119 const char *detail = vpx_codec_error_detail(&ctx->encoder);
121 av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
123 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
126 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
127 const struct vpx_codec_enc_cfg *cfg)
130 int level = AV_LOG_DEBUG;
132 av_log(avctx, level, "vpx_codec_enc_cfg\n");
133 av_log(avctx, level, "generic settings\n"
134 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
135 " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
136 width, "g_usage:", cfg->g_usage,
137 width, "g_threads:", cfg->g_threads,
138 width, "g_profile:", cfg->g_profile,
139 width, "g_w:", cfg->g_w,
140 width, "g_h:", cfg->g_h,
141 width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
142 width, "g_error_resilient:", cfg->g_error_resilient,
143 width, "g_pass:", cfg->g_pass,
144 width, "g_lag_in_frames:", cfg->g_lag_in_frames);
145 av_log(avctx, level, "rate control settings\n"
146 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
147 " %*s%d\n %*s%p(%zu)\n %*s%u\n",
148 width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
149 width, "rc_resize_allowed:", cfg->rc_resize_allowed,
150 width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
151 width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
152 width, "rc_end_usage:", cfg->rc_end_usage,
153 width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
154 width, "rc_target_bitrate:", cfg->rc_target_bitrate);
155 av_log(avctx, level, "quantizer settings\n"
157 width, "rc_min_quantizer:", cfg->rc_min_quantizer,
158 width, "rc_max_quantizer:", cfg->rc_max_quantizer);
159 av_log(avctx, level, "bitrate tolerance\n"
161 width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
162 width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
163 av_log(avctx, level, "decoder buffer model\n"
164 " %*s%u\n %*s%u\n %*s%u\n",
165 width, "rc_buf_sz:", cfg->rc_buf_sz,
166 width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
167 width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
168 av_log(avctx, level, "2 pass rate control settings\n"
169 " %*s%u\n %*s%u\n %*s%u\n",
170 width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
171 width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
172 width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
173 av_log(avctx, level, "keyframing settings\n"
174 " %*s%d\n %*s%u\n %*s%u\n",
175 width, "kf_mode:", cfg->kf_mode,
176 width, "kf_min_dist:", cfg->kf_min_dist,
177 width, "kf_max_dist:", cfg->kf_max_dist);
178 av_log(avctx, level, "\n");
181 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
183 struct FrameListData **p = list;
188 cx_frame->next = NULL;
191 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
193 av_freep(&cx_frame->buf);
197 static av_cold void free_frame_list(struct FrameListData *list)
199 struct FrameListData *p = list;
208 static av_cold int codecctl_int(AVCodecContext *avctx,
209 enum vp8e_enc_control_id id, int val)
211 VP8Context *ctx = avctx->priv_data;
216 snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
217 av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
219 res = vpx_codec_control(&ctx->encoder, id, val);
220 if (res != VPX_CODEC_OK) {
221 snprintf(buf, sizeof(buf), "Failed to set %s codec control",
223 log_encoder_error(avctx, buf);
226 return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
229 static av_cold int vp8_free(AVCodecContext *avctx)
231 VP8Context *ctx = avctx->priv_data;
233 vpx_codec_destroy(&ctx->encoder);
234 av_freep(&ctx->twopass_stats.buf);
235 av_freep(&avctx->coded_frame);
236 av_freep(&avctx->stats_out);
237 free_frame_list(ctx->coded_frame_list);
241 static av_cold int vp8_init(AVCodecContext *avctx)
243 VP8Context *ctx = avctx->priv_data;
244 const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
245 struct vpx_codec_enc_cfg enccfg;
248 av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
249 av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
251 if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
252 av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
253 vpx_codec_err_to_string(res));
254 return AVERROR(EINVAL);
256 dump_enc_cfg(avctx, &enccfg);
258 enccfg.g_w = avctx->width;
259 enccfg.g_h = avctx->height;
260 enccfg.g_timebase.num = avctx->time_base.num;
261 enccfg.g_timebase.den = avctx->time_base.den;
262 enccfg.g_threads = avctx->thread_count;
263 enccfg.g_lag_in_frames= FFMIN(avctx->rc_lookahead, 25); //0-25, avoids init failure
265 if (avctx->flags & CODEC_FLAG_PASS1)
266 enccfg.g_pass = VPX_RC_FIRST_PASS;
267 else if (avctx->flags & CODEC_FLAG_PASS2)
268 enccfg.g_pass = VPX_RC_LAST_PASS;
270 enccfg.g_pass = VPX_RC_ONE_PASS;
272 if (avctx->rc_min_rate == avctx->rc_max_rate &&
273 avctx->rc_min_rate == avctx->bit_rate)
274 enccfg.rc_end_usage = VPX_CBR;
276 enccfg.rc_end_usage = VPX_CQ;
277 enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
280 enccfg.rc_min_quantizer = avctx->qmin;
281 enccfg.rc_max_quantizer = avctx->qmax;
282 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
284 //0-100 (0 => CBR, 100 => VBR)
285 enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
286 enccfg.rc_2pass_vbr_minsection_pct =
287 avctx->rc_min_rate * 100LL / avctx->bit_rate;
288 if (avctx->rc_max_rate)
289 enccfg.rc_2pass_vbr_maxsection_pct =
290 avctx->rc_max_rate * 100LL / avctx->bit_rate;
292 if (avctx->rc_buffer_size)
294 avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
295 if (avctx->rc_initial_buffer_occupancy)
296 enccfg.rc_buf_initial_sz =
297 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
298 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
299 enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
301 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
302 if (avctx->keyint_min == avctx->gop_size)
303 enccfg.kf_min_dist = avctx->keyint_min;
304 enccfg.kf_max_dist = avctx->gop_size;
306 if (enccfg.g_pass == VPX_RC_FIRST_PASS)
307 enccfg.g_lag_in_frames = 0;
308 else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
311 if (!avctx->stats_in) {
312 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
313 return AVERROR_INVALIDDATA;
316 ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
317 ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
318 if (!ctx->twopass_stats.buf) {
319 av_log(avctx, AV_LOG_ERROR,
320 "Stat buffer alloc (%zu bytes) failed\n",
321 ctx->twopass_stats.sz);
322 return AVERROR(ENOMEM);
324 decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
325 ctx->twopass_stats.sz);
326 if (decode_size < 0) {
327 av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
328 return AVERROR_INVALIDDATA;
331 ctx->twopass_stats.sz = decode_size;
332 enccfg.rc_twopass_stats_in = ctx->twopass_stats;
335 /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
336 complexity playback on low powered devices at the expense of encode
338 if (avctx->profile != FF_PROFILE_UNKNOWN)
339 enccfg.g_profile = avctx->profile;
341 enccfg.g_error_resilient = ctx->flags & VP8F_ERROR_RESILIENT;
343 dump_enc_cfg(avctx, &enccfg);
344 /* Construct Encoder Context */
345 res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
346 if (res != VPX_CODEC_OK) {
347 log_encoder_error(avctx, "Failed to initialize encoder");
348 return AVERROR(EINVAL);
351 //codec control failures are currently treated only as warnings
352 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
353 codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpuused);
354 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
355 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
356 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
357 codecctl_int(avctx, VP8E_SET_CQ_LEVEL, (int)avctx->crf);
358 codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, !!(ctx->flags & VP8F_AUTO_ALT_REF));
359 codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
360 codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
361 codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
363 av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
365 //provide dummy value to initialize wrapper, values will be updated each _encode()
366 vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
369 avctx->coded_frame = avcodec_alloc_frame();
370 if (!avctx->coded_frame) {
371 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
373 return AVERROR(ENOMEM);
378 static inline void cx_pktcpy(struct FrameListData *dst,
379 const struct vpx_codec_cx_pkt *src)
381 dst->pts = src->data.frame.pts;
382 dst->duration = src->data.frame.duration;
383 dst->flags = src->data.frame.flags;
384 dst->sz = src->data.frame.sz;
385 dst->buf = src->data.frame.buf;
389 * Store coded frame information in format suitable for return from encode().
391 * Write buffer information from @a cx_frame to @a buf & @a buf_size.
392 * Timing/frame details to @a coded_frame.
393 * @return Frame size written to @a buf on success
394 * @return AVERROR(EINVAL) on error
396 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
397 uint8_t *buf, int buf_size, AVFrame *coded_frame)
399 if ((int) cx_frame->sz <= buf_size) {
400 buf_size = cx_frame->sz;
401 memcpy(buf, cx_frame->buf, buf_size);
402 coded_frame->pts = cx_frame->pts;
403 coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
405 if (coded_frame->key_frame)
406 coded_frame->pict_type = AV_PICTURE_TYPE_I;
408 coded_frame->pict_type = AV_PICTURE_TYPE_P;
410 av_log(avctx, AV_LOG_ERROR,
411 "Compressed frame larger than storage provided! (%zu/%d)\n",
412 cx_frame->sz, buf_size);
413 return AVERROR(EINVAL);
419 * Queue multiple output frames from the encoder, returning the front-most.
420 * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
421 * the frame queue. Return the head frame if available.
422 * @return Stored frame size
423 * @return AVERROR(EINVAL) on output size error
424 * @return AVERROR(ENOMEM) on coded frame queue data allocation error
426 static int queue_frames(AVCodecContext *avctx, uint8_t *buf, int buf_size,
427 AVFrame *coded_frame)
429 VP8Context *ctx = avctx->priv_data;
430 const struct vpx_codec_cx_pkt *pkt;
431 const void *iter = NULL;
434 if (ctx->coded_frame_list) {
435 struct FrameListData *cx_frame = ctx->coded_frame_list;
436 /* return the leading frame if we've already begun queueing */
437 size = storeframe(avctx, cx_frame, buf, buf_size, coded_frame);
439 return AVERROR(EINVAL);
440 ctx->coded_frame_list = cx_frame->next;
441 free_coded_frame(cx_frame);
444 /* consume all available output from the encoder before returning. buffers
445 are only good through the next vpx_codec call */
446 while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
448 case VPX_CODEC_CX_FRAME_PKT:
450 struct FrameListData cx_frame;
452 /* avoid storing the frame when the list is empty and we haven't yet
453 provided a frame for output */
454 assert(!ctx->coded_frame_list);
455 cx_pktcpy(&cx_frame, pkt);
456 size = storeframe(avctx, &cx_frame, buf, buf_size, coded_frame);
458 return AVERROR(EINVAL);
460 struct FrameListData *cx_frame =
461 av_malloc(sizeof(struct FrameListData));
464 av_log(avctx, AV_LOG_ERROR,
465 "Frame queue element alloc failed\n");
466 return AVERROR(ENOMEM);
468 cx_pktcpy(cx_frame, pkt);
469 cx_frame->buf = av_malloc(cx_frame->sz);
471 if (!cx_frame->buf) {
472 av_log(avctx, AV_LOG_ERROR,
473 "Data buffer alloc (%zu bytes) failed\n",
475 return AVERROR(ENOMEM);
477 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
478 coded_frame_add(&ctx->coded_frame_list, cx_frame);
481 case VPX_CODEC_STATS_PKT: {
482 struct vpx_fixed_buf *stats = &ctx->twopass_stats;
483 stats->buf = av_realloc(stats->buf,
484 stats->sz + pkt->data.twopass_stats.sz);
486 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
487 return AVERROR(ENOMEM);
489 memcpy((uint8_t*)stats->buf + stats->sz,
490 pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
491 stats->sz += pkt->data.twopass_stats.sz;
494 case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
495 case VPX_CODEC_CUSTOM_PKT:
496 //ignore unsupported/unrecognized packet types
504 static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size,
507 VP8Context *ctx = avctx->priv_data;
508 AVFrame *frame = data;
509 struct vpx_image *rawimg = NULL;
510 int64_t timestamp = 0;
514 rawimg = &ctx->rawimg;
515 rawimg->planes[VPX_PLANE_Y] = frame->data[0];
516 rawimg->planes[VPX_PLANE_U] = frame->data[1];
517 rawimg->planes[VPX_PLANE_V] = frame->data[2];
518 rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
519 rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
520 rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
521 timestamp = frame->pts;
524 res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
525 avctx->ticks_per_frame, 0, ctx->deadline);
526 if (res != VPX_CODEC_OK) {
527 log_encoder_error(avctx, "Error encoding frame");
528 return AVERROR_INVALIDDATA;
530 coded_size = queue_frames(avctx, buf, buf_size, avctx->coded_frame);
532 if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
533 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
535 avctx->stats_out = av_malloc(b64_size);
536 if (!avctx->stats_out) {
537 av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
539 return AVERROR(ENOMEM);
541 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
542 ctx->twopass_stats.sz);
547 AVCodec ff_libvpx_encoder = {
557 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
558 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),