2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
11 // This is an example demonstrating how to implement a multi-layer VPx
12 // encoding scheme based on temporal scalability for video applications
13 // that benefit from a scalable bitstream.
21 #include "./vpx_config.h"
22 #include "../vpx_ports/vpx_timer.h"
23 #include "vpx/vp8cx.h"
24 #include "vpx/vpx_encoder.h"
26 #include "../tools_common.h"
27 #include "../video_writer.h"
29 static const char *exec_name;
31 void usage_exit(void) {
35 // Denoiser states, for temporal denoising.
40 kDenoiserOnYUVAggressive,
44 static int mode_to_num_layers[12] = {1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 3, 3};
46 // For rate control encoding stats.
47 struct RateControlMetrics {
48 // Number of input frames per layer.
49 int layer_input_frames[VPX_TS_MAX_LAYERS];
50 // Total (cumulative) number of encoded frames per layer.
51 int layer_tot_enc_frames[VPX_TS_MAX_LAYERS];
52 // Number of encoded non-key frames per layer.
53 int layer_enc_frames[VPX_TS_MAX_LAYERS];
54 // Framerate per layer layer (cumulative).
55 double layer_framerate[VPX_TS_MAX_LAYERS];
56 // Target average frame size per layer (per-frame-bandwidth per layer).
57 double layer_pfb[VPX_TS_MAX_LAYERS];
58 // Actual average frame size per layer.
59 double layer_avg_frame_size[VPX_TS_MAX_LAYERS];
60 // Average rate mismatch per layer (|target - actual| / target).
61 double layer_avg_rate_mismatch[VPX_TS_MAX_LAYERS];
62 // Actual encoding bitrate per layer (cumulative).
63 double layer_encoding_bitrate[VPX_TS_MAX_LAYERS];
64 // Average of the short-time encoder actual bitrate.
65 // TODO(marpan): Should we add these short-time stats for each layer?
66 double avg_st_encoding_bitrate;
67 // Variance of the short-time encoder actual bitrate.
68 double variance_st_encoding_bitrate;
69 // Window (number of frames) for computing short-timee encoding bitrate.
71 // Number of window measurements.
73 int layer_target_bitrate[VPX_MAX_LAYERS];
76 // Note: these rate control metrics assume only 1 key frame in the
77 // sequence (i.e., first frame only). So for temporal pattern# 7
78 // (which has key frame for every frame on base layer), the metrics
79 // computation will be off/wrong.
80 // TODO(marpan): Update these metrics to account for multiple key frames
82 static void set_rate_control_metrics(struct RateControlMetrics *rc,
83 vpx_codec_enc_cfg_t *cfg) {
85 // Set the layer (cumulative) framerate and the target layer (non-cumulative)
86 // per-frame-bandwidth, for the rate control encoding stats below.
87 const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
88 rc->layer_framerate[0] = framerate / cfg->ts_rate_decimator[0];
89 rc->layer_pfb[0] = 1000.0 * rc->layer_target_bitrate[0] /
90 rc->layer_framerate[0];
91 for (i = 0; i < cfg->ts_number_layers; ++i) {
93 rc->layer_framerate[i] = framerate / cfg->ts_rate_decimator[i];
94 rc->layer_pfb[i] = 1000.0 *
95 (rc->layer_target_bitrate[i] - rc->layer_target_bitrate[i - 1]) /
96 (rc->layer_framerate[i] - rc->layer_framerate[i - 1]);
98 rc->layer_input_frames[i] = 0;
99 rc->layer_enc_frames[i] = 0;
100 rc->layer_tot_enc_frames[i] = 0;
101 rc->layer_encoding_bitrate[i] = 0.0;
102 rc->layer_avg_frame_size[i] = 0.0;
103 rc->layer_avg_rate_mismatch[i] = 0.0;
105 rc->window_count = 0;
106 rc->window_size = 15;
107 rc->avg_st_encoding_bitrate = 0.0;
108 rc->variance_st_encoding_bitrate = 0.0;
111 static void printout_rate_control_summary(struct RateControlMetrics *rc,
112 vpx_codec_enc_cfg_t *cfg,
115 int tot_num_frames = 0;
116 double perc_fluctuation = 0.0;
117 printf("Total number of processed frames: %d\n\n", frame_cnt -1);
118 printf("Rate control layer stats for %d layer(s):\n\n",
119 cfg->ts_number_layers);
120 for (i = 0; i < cfg->ts_number_layers; ++i) {
121 const int num_dropped = (i > 0) ?
122 (rc->layer_input_frames[i] - rc->layer_enc_frames[i]) :
123 (rc->layer_input_frames[i] - rc->layer_enc_frames[i] - 1);
124 tot_num_frames += rc->layer_input_frames[i];
125 rc->layer_encoding_bitrate[i] = 0.001 * rc->layer_framerate[i] *
126 rc->layer_encoding_bitrate[i] / tot_num_frames;
127 rc->layer_avg_frame_size[i] = rc->layer_avg_frame_size[i] /
128 rc->layer_enc_frames[i];
129 rc->layer_avg_rate_mismatch[i] = 100.0 * rc->layer_avg_rate_mismatch[i] /
130 rc->layer_enc_frames[i];
131 printf("For layer#: %d \n", i);
132 printf("Bitrate (target vs actual): %d %f \n", rc->layer_target_bitrate[i],
133 rc->layer_encoding_bitrate[i]);
134 printf("Average frame size (target vs actual): %f %f \n", rc->layer_pfb[i],
135 rc->layer_avg_frame_size[i]);
136 printf("Average rate_mismatch: %f \n", rc->layer_avg_rate_mismatch[i]);
137 printf("Number of input frames, encoded (non-key) frames, "
138 "and perc dropped frames: %d %d %f \n", rc->layer_input_frames[i],
139 rc->layer_enc_frames[i],
140 100.0 * num_dropped / rc->layer_input_frames[i]);
143 rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
144 rc->variance_st_encoding_bitrate =
145 rc->variance_st_encoding_bitrate / rc->window_count -
146 (rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
147 perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
148 rc->avg_st_encoding_bitrate;
149 printf("Short-time stats, for window of %d frames: \n",rc->window_size);
150 printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
151 rc->avg_st_encoding_bitrate,
152 sqrt(rc->variance_st_encoding_bitrate),
154 if ((frame_cnt - 1) != tot_num_frames)
155 die("Error: Number of input frames not equal to output! \n");
158 // Temporal scaling parameters:
159 // NOTE: The 3 prediction frames cannot be used interchangeably due to
160 // differences in the way they are handled throughout the code. The
161 // frames should be allocated to layers in the order LAST, GF, ARF.
162 // Other combinations work, but may produce slightly inferior results.
163 static void set_temporal_layer_pattern(int layering_mode,
164 vpx_codec_enc_cfg_t *cfg,
166 int *flag_periodicity) {
167 switch (layering_mode) {
171 cfg->ts_periodicity = 1;
172 *flag_periodicity = 1;
173 cfg->ts_number_layers = 1;
174 cfg->ts_rate_decimator[0] = 1;
175 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
177 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF |
178 VP8_EFLAG_NO_UPD_ARF;
182 // 2-layers, 2-frame period.
184 cfg->ts_periodicity = 2;
185 *flag_periodicity = 2;
186 cfg->ts_number_layers = 2;
187 cfg->ts_rate_decimator[0] = 2;
188 cfg->ts_rate_decimator[1] = 1;
189 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
191 // 0=L, 1=GF, Intra-layer prediction enabled.
192 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF |
193 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
194 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
195 VP8_EFLAG_NO_REF_ARF;
197 // 0=L, 1=GF, Intra-layer prediction disabled.
198 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF |
199 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
200 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
201 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST;
206 // 2-layers, 3-frame period.
207 int ids[3] = {0, 1, 1};
208 cfg->ts_periodicity = 3;
209 *flag_periodicity = 3;
210 cfg->ts_number_layers = 2;
211 cfg->ts_rate_decimator[0] = 3;
212 cfg->ts_rate_decimator[1] = 1;
213 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
214 // 0=L, 1=GF, Intra-layer prediction enabled.
215 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
216 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
218 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
219 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
223 // 3-layers, 6-frame period.
224 int ids[6] = {0, 2, 2, 1, 2, 2};
225 cfg->ts_periodicity = 6;
226 *flag_periodicity = 6;
227 cfg->ts_number_layers = 3;
228 cfg->ts_rate_decimator[0] = 6;
229 cfg->ts_rate_decimator[1] = 3;
230 cfg->ts_rate_decimator[2] = 1;
231 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
232 // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled.
233 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
234 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
235 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF |
236 VP8_EFLAG_NO_UPD_LAST;
240 layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST;
244 // 3-layers, 4-frame period.
245 int ids[4] = {0, 2, 1, 2};
246 cfg->ts_periodicity = 4;
247 *flag_periodicity = 4;
248 cfg->ts_number_layers = 3;
249 cfg->ts_rate_decimator[0] = 4;
250 cfg->ts_rate_decimator[1] = 2;
251 cfg->ts_rate_decimator[2] = 1;
252 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
253 // 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled.
254 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
255 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
256 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
257 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
259 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
260 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
264 // 3-layers, 4-frame period.
265 int ids[4] = {0, 2, 1, 2};
266 cfg->ts_periodicity = 4;
267 *flag_periodicity = 4;
268 cfg->ts_number_layers = 3;
269 cfg->ts_rate_decimator[0] = 4;
270 cfg->ts_rate_decimator[1] = 2;
271 cfg->ts_rate_decimator[2] = 1;
272 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
273 // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1, disabled
275 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
276 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
277 layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
278 VP8_EFLAG_NO_UPD_ARF;
280 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
281 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
285 // 3-layers, 4-frame period.
286 int ids[4] = {0, 2, 1, 2};
287 cfg->ts_periodicity = 4;
288 *flag_periodicity = 4;
289 cfg->ts_number_layers = 3;
290 cfg->ts_rate_decimator[0] = 4;
291 cfg->ts_rate_decimator[1] = 2;
292 cfg->ts_rate_decimator[2] = 1;
293 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
294 // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled.
295 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
296 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
297 layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
298 VP8_EFLAG_NO_UPD_ARF;
300 layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
304 // NOTE: Probably of academic interest only.
305 // 5-layers, 16-frame period.
306 int ids[16] = {0, 4, 3, 4, 2, 4, 3, 4, 1, 4, 3, 4, 2, 4, 3, 4};
307 cfg->ts_periodicity = 16;
308 *flag_periodicity = 16;
309 cfg->ts_number_layers = 5;
310 cfg->ts_rate_decimator[0] = 16;
311 cfg->ts_rate_decimator[1] = 8;
312 cfg->ts_rate_decimator[2] = 4;
313 cfg->ts_rate_decimator[3] = 2;
314 cfg->ts_rate_decimator[4] = 1;
315 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
316 layer_flags[0] = VPX_EFLAG_FORCE_KF;
324 layer_flags[15] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
325 VP8_EFLAG_NO_UPD_ARF;
329 layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF;
331 layer_flags[12] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_UPD_ARF;
332 layer_flags[8] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF;
336 // 2-layers, with sync point at first frame of layer 1.
338 cfg->ts_periodicity = 2;
339 *flag_periodicity = 8;
340 cfg->ts_number_layers = 2;
341 cfg->ts_rate_decimator[0] = 2;
342 cfg->ts_rate_decimator[1] = 1;
343 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
345 // ARF is used as predictor for all frames, and is only updated on
346 // key frame. Sync point every 8 frames.
348 // Layer 0: predict from L and ARF, update L and G.
349 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
350 VP8_EFLAG_NO_UPD_ARF;
351 // Layer 1: sync point: predict from L and ARF, and update G.
352 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_LAST |
353 VP8_EFLAG_NO_UPD_ARF;
354 // Layer 0, predict from L and ARF, update L.
355 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF |
356 VP8_EFLAG_NO_UPD_ARF;
357 // Layer 1: predict from L, G and ARF, and update G.
358 layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
359 VP8_EFLAG_NO_UPD_ENTROPY;
361 layer_flags[4] = layer_flags[2];
363 layer_flags[5] = layer_flags[3];
365 layer_flags[6] = layer_flags[4];
367 layer_flags[7] = layer_flags[5];
371 // 3-layers: Sync points for layer 1 and 2 every 8 frames.
372 int ids[4] = {0, 2, 1, 2};
373 cfg->ts_periodicity = 4;
374 *flag_periodicity = 8;
375 cfg->ts_number_layers = 3;
376 cfg->ts_rate_decimator[0] = 4;
377 cfg->ts_rate_decimator[1] = 2;
378 cfg->ts_rate_decimator[2] = 1;
379 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
381 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
382 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
383 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
384 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
385 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
386 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
388 layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
389 layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
390 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
391 layer_flags[6] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
392 VP8_EFLAG_NO_UPD_ARF;
393 layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
394 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_ENTROPY;
398 // 3-layers structure where ARF is used as predictor for all frames,
399 // and is only updated on key frame.
400 // Sync points for layer 1 and 2 every 8 frames.
402 int ids[4] = {0, 2, 1, 2};
403 cfg->ts_periodicity = 4;
404 *flag_periodicity = 8;
405 cfg->ts_number_layers = 3;
406 cfg->ts_rate_decimator[0] = 4;
407 cfg->ts_rate_decimator[1] = 2;
408 cfg->ts_rate_decimator[2] = 1;
409 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
411 // Layer 0: predict from L and ARF; update L and G.
412 layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_ARF |
414 // Layer 2: sync point: predict from L and ARF; update none.
415 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF |
416 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
417 VP8_EFLAG_NO_UPD_ENTROPY;
418 // Layer 1: sync point: predict from L and ARF; update G.
419 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF |
420 VP8_EFLAG_NO_UPD_LAST;
421 // Layer 2: predict from L, G, ARF; update none.
422 layer_flags[3] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
423 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY;
424 // Layer 0: predict from L and ARF; update L.
425 layer_flags[4] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
427 // Layer 2: predict from L, G, ARF; update none.
428 layer_flags[5] = layer_flags[3];
429 // Layer 1: predict from L, G, ARF; update G.
430 layer_flags[6] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
431 // Layer 2: predict from L, G, ARF; update none.
432 layer_flags[7] = layer_flags[3];
437 // 3-layers structure as in case 10, but no sync/refresh points for
439 int ids[4] = {0, 2, 1, 2};
440 cfg->ts_periodicity = 4;
441 *flag_periodicity = 8;
442 cfg->ts_number_layers = 3;
443 cfg->ts_rate_decimator[0] = 4;
444 cfg->ts_rate_decimator[1] = 2;
445 cfg->ts_rate_decimator[2] = 1;
446 memcpy(cfg->ts_layer_id, ids, sizeof(ids));
448 // Layer 0: predict from L and ARF; update L.
449 layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
451 layer_flags[4] = layer_flags[0];
452 // Layer 1: predict from L, G, ARF; update G.
453 layer_flags[2] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
454 layer_flags[6] = layer_flags[2];
455 // Layer 2: predict from L, G, ARF; update none.
456 layer_flags[1] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
457 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY;
458 layer_flags[3] = layer_flags[1];
459 layer_flags[5] = layer_flags[1];
460 layer_flags[7] = layer_flags[1];
466 int main(int argc, char **argv) {
467 VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS] = {NULL};
468 vpx_codec_ctx_t codec;
469 vpx_codec_enc_cfg_t cfg;
480 int pts = 0; // PTS starts at 0.
481 int frame_duration = 1; // 1 timebase tick per frame.
482 int layering_mode = 0;
483 int layer_flags[VPX_TS_MAX_PERIODICITY] = {0};
484 int flag_periodicity = 1;
485 #if VPX_ENCODER_ABI_VERSION > (4 + VPX_CODEC_ABI_VERSION)
486 vpx_svc_layer_id_t layer_id = {0, 0};
488 vpx_svc_layer_id_t layer_id = {0};
490 const VpxInterface *encoder = NULL;
492 struct RateControlMetrics rc;
494 const int min_args_base = 11;
495 #if CONFIG_VP9_HIGHBITDEPTH
496 vpx_bit_depth_t bit_depth = VPX_BITS_8;
497 int input_bit_depth = 8;
498 const int min_args = min_args_base + 1;
500 const int min_args = min_args_base;
501 #endif // CONFIG_VP9_HIGHBITDEPTH
502 double sum_bitrate = 0.0;
503 double sum_bitrate2 = 0.0;
504 double framerate = 30.0;
507 // Check usage and arguments.
508 if (argc < min_args) {
509 #if CONFIG_VP9_HIGHBITDEPTH
510 die("Usage: %s <infile> <outfile> <codec_type(vp8/vp9)> <width> <height> "
511 "<rate_num> <rate_den> <speed> <frame_drop_threshold> <mode> "
512 "<Rate_0> ... <Rate_nlayers-1> <bit-depth> \n", argv[0]);
514 die("Usage: %s <infile> <outfile> <codec_type(vp8/vp9)> <width> <height> "
515 "<rate_num> <rate_den> <speed> <frame_drop_threshold> <mode> "
516 "<Rate_0> ... <Rate_nlayers-1> \n", argv[0]);
517 #endif // CONFIG_VP9_HIGHBITDEPTH
520 encoder = get_vpx_encoder_by_name(argv[3]);
522 die("Unsupported codec.");
524 printf("Using %s\n", vpx_codec_iface_name(encoder->codec_interface()));
526 width = strtol(argv[4], NULL, 0);
527 height = strtol(argv[5], NULL, 0);
528 if (width < 16 || width % 2 || height < 16 || height % 2) {
529 die("Invalid resolution: %d x %d", width, height);
532 layering_mode = strtol(argv[10], NULL, 0);
533 if (layering_mode < 0 || layering_mode > 12) {
534 die("Invalid layering mode (0..12) %s", argv[10]);
537 if (argc != min_args + mode_to_num_layers[layering_mode]) {
538 die("Invalid number of arguments");
541 #if CONFIG_VP9_HIGHBITDEPTH
542 switch (strtol(argv[argc-1], NULL, 0)) {
544 bit_depth = VPX_BITS_8;
548 bit_depth = VPX_BITS_10;
549 input_bit_depth = 10;
552 bit_depth = VPX_BITS_12;
553 input_bit_depth = 12;
556 die("Invalid bit depth (8, 10, 12) %s", argv[argc-1]);
558 if (!vpx_img_alloc(&raw,
559 bit_depth == VPX_BITS_8 ? VPX_IMG_FMT_I420 :
561 width, height, 32)) {
562 die("Failed to allocate image", width, height);
565 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, width, height, 32)) {
566 die("Failed to allocate image", width, height);
568 #endif // CONFIG_VP9_HIGHBITDEPTH
570 // Populate encoder configuration.
571 res = vpx_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
573 printf("Failed to get config: %s\n", vpx_codec_err_to_string(res));
577 // Update the default configuration with our settings.
581 #if CONFIG_VP9_HIGHBITDEPTH
582 if (bit_depth != VPX_BITS_8) {
583 cfg.g_bit_depth = bit_depth;
584 cfg.g_input_bit_depth = input_bit_depth;
587 #endif // CONFIG_VP9_HIGHBITDEPTH
589 // Timebase format e.g. 30fps: numerator=1, demoninator = 30.
590 cfg.g_timebase.num = strtol(argv[6], NULL, 0);
591 cfg.g_timebase.den = strtol(argv[7], NULL, 0);
593 speed = strtol(argv[8], NULL, 0);
595 die("Invalid speed setting: must be positive");
598 for (i = min_args_base;
599 (int)i < min_args_base + mode_to_num_layers[layering_mode];
601 rc.layer_target_bitrate[i - 11] = strtol(argv[i], NULL, 0);
602 if (strncmp(encoder->name, "vp8", 3) == 0)
603 cfg.ts_target_bitrate[i - 11] = rc.layer_target_bitrate[i - 11];
604 else if (strncmp(encoder->name, "vp9", 3) == 0)
605 cfg.layer_target_bitrate[i - 11] = rc.layer_target_bitrate[i - 11];
608 // Real time parameters.
609 cfg.rc_dropframe_thresh = strtol(argv[9], NULL, 0);
610 cfg.rc_end_usage = VPX_CBR;
611 cfg.rc_min_quantizer = 2;
612 cfg.rc_max_quantizer = 56;
613 if (strncmp(encoder->name, "vp9", 3) == 0)
614 cfg.rc_max_quantizer = 52;
615 cfg.rc_undershoot_pct = 50;
616 cfg.rc_overshoot_pct = 50;
617 cfg.rc_buf_initial_sz = 500;
618 cfg.rc_buf_optimal_sz = 600;
619 cfg.rc_buf_sz = 1000;
621 // Disable dynamic resizing by default.
622 cfg.rc_resize_allowed = 0;
624 // Use 1 thread as default.
627 // Enable error resilient mode.
628 cfg.g_error_resilient = 1;
629 cfg.g_lag_in_frames = 0;
630 cfg.kf_mode = VPX_KF_AUTO;
632 // Disable automatic keyframe placement.
633 cfg.kf_min_dist = cfg.kf_max_dist = 3000;
635 cfg.temporal_layering_mode = VP9E_TEMPORAL_LAYERING_MODE_BYPASS;
637 set_temporal_layer_pattern(layering_mode,
642 set_rate_control_metrics(&rc, &cfg);
644 // Target bandwidth for the whole stream.
645 // Set to layer_target_bitrate for highest layer (total bitrate).
646 cfg.rc_target_bitrate = rc.layer_target_bitrate[cfg.ts_number_layers - 1];
649 if (!(infile = fopen(argv[1], "rb"))) {
650 die("Failed to open %s for reading", argv[1]);
653 framerate = cfg.g_timebase.den / cfg.g_timebase.num;
654 // Open an output file for each stream.
655 for (i = 0; i < cfg.ts_number_layers; ++i) {
656 char file_name[PATH_MAX];
658 info.codec_fourcc = encoder->fourcc;
659 info.frame_width = cfg.g_w;
660 info.frame_height = cfg.g_h;
661 info.time_base.numerator = cfg.g_timebase.num;
662 info.time_base.denominator = cfg.g_timebase.den;
664 snprintf(file_name, sizeof(file_name), "%s_%d.ivf", argv[2], i);
665 outfile[i] = vpx_video_writer_open(file_name, kContainerIVF, &info);
667 die("Failed to open %s for writing", file_name);
669 assert(outfile[i] != NULL);
671 // No spatial layers in this encoder.
672 cfg.ss_number_layers = 1;
675 #if CONFIG_VP9_HIGHBITDEPTH
676 if (vpx_codec_enc_init(
677 &codec, encoder->codec_interface(), &cfg,
678 bit_depth == VPX_BITS_8 ? 0 : VPX_CODEC_USE_HIGHBITDEPTH))
680 if (vpx_codec_enc_init(&codec, encoder->codec_interface(), &cfg, 0))
681 #endif // CONFIG_VP9_HIGHBITDEPTH
682 die_codec(&codec, "Failed to initialize encoder");
684 if (strncmp(encoder->name, "vp8", 3) == 0) {
685 vpx_codec_control(&codec, VP8E_SET_CPUUSED, -speed);
686 vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, kDenoiserOff);
687 vpx_codec_control(&codec, VP8E_SET_STATIC_THRESHOLD, 0);
688 } else if (strncmp(encoder->name, "vp9", 3) == 0) {
689 vpx_svc_extra_cfg_t svc_params;
690 vpx_codec_control(&codec, VP8E_SET_CPUUSED, speed);
691 vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3);
692 vpx_codec_control(&codec, VP9E_SET_FRAME_PERIODIC_BOOST, 0);
693 vpx_codec_control(&codec, VP9E_SET_NOISE_SENSITIVITY, 0);
694 vpx_codec_control(&codec, VP8E_SET_STATIC_THRESHOLD, 0);
695 vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, (cfg.g_threads >> 1));
696 if (vpx_codec_control(&codec, VP9E_SET_SVC, layering_mode > 0 ? 1: 0))
697 die_codec(&codec, "Failed to set SVC");
698 for (i = 0; i < cfg.ts_number_layers; ++i) {
699 svc_params.max_quantizers[i] = cfg.rc_max_quantizer;
700 svc_params.min_quantizers[i] = cfg.rc_min_quantizer;
702 svc_params.scaling_factor_num[0] = cfg.g_h;
703 svc_params.scaling_factor_den[0] = cfg.g_h;
704 vpx_codec_control(&codec, VP9E_SET_SVC_PARAMETERS, &svc_params);
706 if (strncmp(encoder->name, "vp8", 3) == 0) {
707 vpx_codec_control(&codec, VP8E_SET_SCREEN_CONTENT_MODE, 0);
709 vpx_codec_control(&codec, VP8E_SET_TOKEN_PARTITIONS, 1);
710 // This controls the maximum target size of the key frame.
711 // For generating smaller key frames, use a smaller max_intra_size_pct
712 // value, like 100 or 200.
714 const int max_intra_size_pct = 900;
715 vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT,
720 while (frame_avail || got_data) {
721 struct vpx_usec_timer timer;
722 vpx_codec_iter_t iter = NULL;
723 const vpx_codec_cx_pkt_t *pkt;
724 #if VPX_ENCODER_ABI_VERSION > (4 + VPX_CODEC_ABI_VERSION)
725 // Update the temporal layer_id. No spatial layers in this test.
726 layer_id.spatial_layer_id = 0;
728 layer_id.temporal_layer_id =
729 cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity];
730 if (strncmp(encoder->name, "vp9", 3) == 0) {
731 vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id);
732 } else if (strncmp(encoder->name, "vp8", 3) == 0) {
733 vpx_codec_control(&codec, VP8E_SET_TEMPORAL_LAYER_ID,
734 layer_id.temporal_layer_id);
736 flags = layer_flags[frame_cnt % flag_periodicity];
737 if (layering_mode == 0)
739 frame_avail = vpx_img_read(&raw, infile);
741 ++rc.layer_input_frames[layer_id.temporal_layer_id];
742 vpx_usec_timer_start(&timer);
743 if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts, 1, flags,
745 die_codec(&codec, "Failed to encode frame");
747 vpx_usec_timer_mark(&timer);
748 cx_time += vpx_usec_timer_elapsed(&timer);
750 if (layering_mode != 7) {
751 layer_flags[0] &= ~VPX_EFLAG_FORCE_KF;
754 while ( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) {
757 case VPX_CODEC_CX_FRAME_PKT:
758 for (i = cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity];
759 i < cfg.ts_number_layers; ++i) {
760 vpx_video_writer_write_frame(outfile[i], pkt->data.frame.buf,
761 pkt->data.frame.sz, pts);
762 ++rc.layer_tot_enc_frames[i];
763 rc.layer_encoding_bitrate[i] += 8.0 * pkt->data.frame.sz;
764 // Keep count of rate control stats per layer (for non-key frames).
765 if (i == cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity] &&
766 !(pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
767 rc.layer_avg_frame_size[i] += 8.0 * pkt->data.frame.sz;
768 rc.layer_avg_rate_mismatch[i] +=
769 fabs(8.0 * pkt->data.frame.sz - rc.layer_pfb[i]) /
771 ++rc.layer_enc_frames[i];
774 // Update for short-time encoding bitrate states, for moving window
775 // of size rc->window, shifted by rc->window / 2.
776 // Ignore first window segment, due to key frame.
777 if (frame_cnt > rc.window_size) {
778 sum_bitrate += 0.001 * 8.0 * pkt->data.frame.sz * framerate;
779 if (frame_cnt % rc.window_size == 0) {
780 rc.window_count += 1;
781 rc.avg_st_encoding_bitrate += sum_bitrate / rc.window_size;
782 rc.variance_st_encoding_bitrate +=
783 (sum_bitrate / rc.window_size) *
784 (sum_bitrate / rc.window_size);
788 // Second shifted window.
789 if (frame_cnt > rc.window_size + rc.window_size / 2) {
790 sum_bitrate2 += 0.001 * 8.0 * pkt->data.frame.sz * framerate;
791 if (frame_cnt > 2 * rc.window_size &&
792 frame_cnt % rc.window_size == 0) {
793 rc.window_count += 1;
794 rc.avg_st_encoding_bitrate += sum_bitrate2 / rc.window_size;
795 rc.variance_st_encoding_bitrate +=
796 (sum_bitrate2 / rc.window_size) *
797 (sum_bitrate2 / rc.window_size);
807 pts += frame_duration;
810 printout_rate_control_summary(&rc, &cfg, frame_cnt);
812 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
814 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
815 1000000 * (double)frame_cnt / (double)cx_time);
817 if (vpx_codec_destroy(&codec))
818 die_codec(&codec, "Failed to destroy codec");
820 // Try to rewrite the output file headers with the actual frame count.
821 for (i = 0; i < cfg.ts_number_layers; ++i)
822 vpx_video_writer_close(outfile[i]);