FFmpeg
nvenc_h264.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "libavutil/internal.h"
20 
21 #include "avcodec.h"
22 #include "internal.h"
23 
24 #include "nvenc.h"
25 
26 #define OFFSET(x) offsetof(NvencContext, x)
27 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
28 static const AVOption options[] = {
29  { "preset", "Set the encoding preset", OFFSET(preset), AV_OPT_TYPE_INT, { .i64 = PRESET_MEDIUM }, PRESET_DEFAULT, PRESET_LOSSLESS_HP, VE, "preset" },
30  { "default", "", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_DEFAULT }, 0, 0, VE, "preset" },
31  { "slow", "hq 2 passes", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_SLOW }, 0, 0, VE, "preset" },
32  { "medium", "hq 1 pass", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_MEDIUM }, 0, 0, VE, "preset" },
33  { "fast", "hp 1 pass", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_FAST }, 0, 0, VE, "preset" },
34  { "hp", "", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_HP }, 0, 0, VE, "preset" },
35  { "hq", "", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_HQ }, 0, 0, VE, "preset" },
36  { "bd", "", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_BD }, 0, 0, VE, "preset" },
37  { "ll", "low latency", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOW_LATENCY_DEFAULT }, 0, 0, VE, "preset" },
38  { "llhq", "low latency hq", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOW_LATENCY_HQ }, 0, 0, VE, "preset" },
39  { "llhp", "low latency hp", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOW_LATENCY_HP }, 0, 0, VE, "preset" },
40  { "lossless", "", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOSSLESS_DEFAULT }, 0, 0, VE, "preset" },
41  { "losslesshp", "", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOSSLESS_HP }, 0, 0, VE, "preset" },
42  { "profile", "Set the encoding profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = NV_ENC_H264_PROFILE_MAIN }, NV_ENC_H264_PROFILE_BASELINE, NV_ENC_H264_PROFILE_HIGH_444P, VE, "profile" },
43  { "baseline", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_PROFILE_BASELINE }, 0, 0, VE, "profile" },
44  { "main", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_PROFILE_MAIN }, 0, 0, VE, "profile" },
45  { "high", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_PROFILE_HIGH }, 0, 0, VE, "profile" },
46  { "high444p", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_PROFILE_HIGH_444P }, 0, 0, VE, "profile" },
47  { "level", "Set the encoding level restriction", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = NV_ENC_LEVEL_AUTOSELECT }, NV_ENC_LEVEL_AUTOSELECT, NV_ENC_LEVEL_H264_51, VE, "level" },
48  { "auto", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_AUTOSELECT }, 0, 0, VE, "level" },
49  { "1", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_1 }, 0, 0, VE, "level" },
50  { "1.0", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_1 }, 0, 0, VE, "level" },
51  { "1b", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_1b }, 0, 0, VE, "level" },
52  { "1.0b", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_1b }, 0, 0, VE, "level" },
53  { "1.1", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_11 }, 0, 0, VE, "level" },
54  { "1.2", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_12 }, 0, 0, VE, "level" },
55  { "1.3", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_13 }, 0, 0, VE, "level" },
56  { "2", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_2 }, 0, 0, VE, "level" },
57  { "2.0", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_2 }, 0, 0, VE, "level" },
58  { "2.1", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_21 }, 0, 0, VE, "level" },
59  { "2.2", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_22 }, 0, 0, VE, "level" },
60  { "3", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_3 }, 0, 0, VE, "level" },
61  { "3.0", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_3 }, 0, 0, VE, "level" },
62  { "3.1", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_31 }, 0, 0, VE, "level" },
63  { "3.2", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_32 }, 0, 0, VE, "level" },
64  { "4", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_4 }, 0, 0, VE, "level" },
65  { "4.0", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_4 }, 0, 0, VE, "level" },
66  { "4.1", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_41 }, 0, 0, VE, "level" },
67  { "4.2", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_42 }, 0, 0, VE, "level" },
68  { "5", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_5 }, 0, 0, VE, "level" },
69  { "5.0", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_5 }, 0, 0, VE, "level" },
70  { "5.1", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_LEVEL_H264_51 }, 0, 0, VE, "level" },
71  { "rc", "Override the preset rate-control", OFFSET(rc), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "rc" },
72  { "constqp", "Constant QP mode", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_PARAMS_RC_CONSTQP }, 0, 0, VE, "rc" },
73  { "vbr", "Variable bitrate mode", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_PARAMS_RC_VBR }, 0, 0, VE, "rc" },
74  { "cbr", "Constant bitrate mode", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_PARAMS_RC_CBR }, 0, 0, VE, "rc" },
75  { "vbr_minqp", "Variable bitrate mode with MinQP (deprecated)", 0, AV_OPT_TYPE_CONST, { .i64 = RCD(NV_ENC_PARAMS_RC_VBR_MINQP) }, 0, 0, VE, "rc" },
76  { "ll_2pass_quality", "Multi-pass optimized for image quality (deprecated)",
77  0, AV_OPT_TYPE_CONST, { .i64 = RCD(NV_ENC_PARAMS_RC_2_PASS_QUALITY) }, 0, 0, VE, "rc" },
78  { "ll_2pass_size", "Multi-pass optimized for constant frame size (deprecated)",
79  0, AV_OPT_TYPE_CONST, { .i64 = RCD(NV_ENC_PARAMS_RC_2_PASS_FRAMESIZE_CAP) }, 0, 0, VE, "rc" },
80  { "vbr_2pass", "Multi-pass variable bitrate mode (deprecated)", 0, AV_OPT_TYPE_CONST, { .i64 = RCD(NV_ENC_PARAMS_RC_2_PASS_VBR) }, 0, 0, VE, "rc" },
81  { "cbr_ld_hq", "Constant bitrate low delay high quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_PARAMS_RC_CBR_LOWDELAY_HQ }, 0, 0, VE, "rc" },
82  { "cbr_hq", "Constant bitrate high quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_PARAMS_RC_CBR_HQ }, 0, 0, VE, "rc" },
83  { "vbr_hq", "Variable bitrate high quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_PARAMS_RC_VBR_HQ }, 0, 0, VE, "rc" },
84  { "rc-lookahead", "Number of frames to look ahead for rate-control",
85  OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
86  { "surfaces", "Number of concurrent surfaces", OFFSET(nb_surfaces), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_REGISTERED_FRAMES, VE },
87  { "cbr", "Use cbr encoding mode", OFFSET(cbr), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
88  { "2pass", "Use 2pass encoding mode", OFFSET(twopass), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
89  { "gpu", "Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on.",
90  OFFSET(device), AV_OPT_TYPE_INT, { .i64 = ANY_DEVICE }, -2, INT_MAX, VE, "gpu" },
91  { "any", "Pick the first device available", 0, AV_OPT_TYPE_CONST, { .i64 = ANY_DEVICE }, 0, 0, VE, "gpu" },
92  { "list", "List the available devices", 0, AV_OPT_TYPE_CONST, { .i64 = LIST_DEVICES }, 0, 0, VE, "gpu" },
93  { "delay", "Delay frame output by the given amount of frames",
94  OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
95  { "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts",
96  OFFSET(no_scenecut), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
97  { "forced-idr", "If forcing keyframes, force them as IDR frames.",
98  OFFSET(forced_idr), AV_OPT_TYPE_BOOL, { .i64 = 0 }, -1, 1, VE },
99  { "b_adapt", "When lookahead is enabled, set this to 0 to disable adaptive B-frame decision",
100  OFFSET(b_adapt), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE },
101  { "spatial-aq", "set to 1 to enable Spatial AQ", OFFSET(aq), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
102  { "temporal-aq", "set to 1 to enable Temporal AQ", OFFSET(temporal_aq), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
103  { "zerolatency", "Set 1 to indicate zero latency operation (no reordering delay)",
104  OFFSET(zerolatency), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
105  { "nonref_p", "Set this to 1 to enable automatic insertion of non-reference P-frames",
106  OFFSET(nonref_p), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
107  { "strict_gop", "Set 1 to minimize GOP-to-GOP rate fluctuations",
108  OFFSET(strict_gop), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
109  { "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)",
110  OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
111  { "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control",
112  OFFSET(quality), AV_OPT_TYPE_FLOAT, { .dbl = 0.}, 0., 51., VE },
113  { "aud", "Use access unit delimiters", OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
114  { "bluray-compat", "Bluray compatibility workarounds", OFFSET(bluray_compat),AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
115  { "init_qpP", "Initial QP value for P frame", OFFSET(init_qp_p), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
116  { "init_qpB", "Initial QP value for B frame", OFFSET(init_qp_b), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
117  { "init_qpI", "Initial QP value for I frame", OFFSET(init_qp_i), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
118  { "qp", "Constant quantization parameter rate control method",
119  OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
120  { "weighted_pred","Set 1 to enable weighted prediction",
121  OFFSET(weighted_pred),AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
122  { "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 },-1, 2, VE, "coder" },
123  { "default", "", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, VE, "coder" },
124  { "auto", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_ENTROPY_CODING_MODE_AUTOSELECT }, 0, 0, VE, "coder" },
125  { "cabac", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_ENTROPY_CODING_MODE_CABAC }, 0, 0, VE, "coder" },
126  { "cavlc", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_ENTROPY_CODING_MODE_CAVLC }, 0, 0, VE, "coder" },
127  { "ac", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_ENTROPY_CODING_MODE_CABAC }, 0, 0, VE, "coder" },
128  { "vlc", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_ENTROPY_CODING_MODE_CAVLC }, 0, 0, VE, "coder" },
129 #ifdef NVENC_HAVE_BFRAME_REF_MODE
130  { "b_ref_mode", "Use B frames as references", OFFSET(b_ref_mode), AV_OPT_TYPE_INT, { .i64 = NV_ENC_BFRAME_REF_MODE_DISABLED }, NV_ENC_BFRAME_REF_MODE_DISABLED, NV_ENC_BFRAME_REF_MODE_MIDDLE, VE, "b_ref_mode" },
131  { "disabled", "B frames will not be used for reference", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_BFRAME_REF_MODE_DISABLED }, 0, 0, VE, "b_ref_mode" },
132  { "each", "Each B frame will be used for reference", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_BFRAME_REF_MODE_EACH }, 0, 0, VE, "b_ref_mode" },
133  { "middle", "Only (number of B frames)/2 will be used for reference", 0,AV_OPT_TYPE_CONST, { .i64 = NV_ENC_BFRAME_REF_MODE_MIDDLE }, 0, 0, VE, "b_ref_mode" },
134 #else
135  { "b_ref_mode", "(not supported)", OFFSET(b_ref_mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE, "b_ref_mode" },
136  { "disabled", "", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, VE, "b_ref_mode" },
137  { "each", "", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, VE, "b_ref_mode" },
138  { "middle", "", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, VE, "b_ref_mode" },
139 #endif
140  { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE },
141  { "dpb_size", "Specifies the DPB size used for encoding (0 means automatic)",
142  OFFSET(dpb_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
143  { NULL }
144 };
145 
146 static const AVCodecDefault defaults[] = {
147  { "b", "2M" },
148  { "qmin", "-1" },
149  { "qmax", "-1" },
150  { "qdiff", "-1" },
151  { "qblur", "-1" },
152  { "qcomp", "-1" },
153  { "g", "250" },
154  { "bf", "0" },
155  { "refs", "0" },
156  { NULL },
157 };
158 
159 #if FF_API_NVENC_OLD_NAME
160 
162 {
163  av_log(avctx, AV_LOG_WARNING, "This encoder is deprecated, use 'h264_nvenc' instead\n");
164  return ff_nvenc_encode_init(avctx);
165 }
166 
167 #if CONFIG_NVENC_ENCODER
168 static const AVClass nvenc_class = {
169  .class_name = "nvenc",
170  .item_name = av_default_item_name,
171  .option = options,
172  .version = LIBAVUTIL_VERSION_INT,
173 };
174 
176  .name = "nvenc",
177  .long_name = NULL_IF_CONFIG_SMALL("NVIDIA NVENC H.264 encoder"),
178  .type = AVMEDIA_TYPE_VIDEO,
179  .id = AV_CODEC_ID_H264,
180  .init = nvenc_old_init,
181  .send_frame = ff_nvenc_send_frame,
182  .receive_packet = ff_nvenc_receive_packet,
183  .encode2 = ff_nvenc_encode_frame,
184  .close = ff_nvenc_encode_close,
185  .priv_data_size = sizeof(NvencContext),
186  .priv_class = &nvenc_class,
187  .defaults = defaults,
188  .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
189  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
191  .wrapper_name = "nvenc",
192 };
193 #endif
194 
195 /* Add an alias for nvenc_h264 */
196 #if CONFIG_NVENC_H264_ENCODER
197 static const AVClass nvenc_h264_class = {
198  .class_name = "nvenc_h264",
199  .item_name = av_default_item_name,
200  .option = options,
201  .version = LIBAVUTIL_VERSION_INT,
202 };
203 
205  .name = "nvenc_h264",
206  .long_name = NULL_IF_CONFIG_SMALL("NVIDIA NVENC H.264 encoder"),
207  .type = AVMEDIA_TYPE_VIDEO,
208  .id = AV_CODEC_ID_H264,
209  .init = nvenc_old_init,
210  .send_frame = ff_nvenc_send_frame,
211  .receive_packet = ff_nvenc_receive_packet,
212  .encode2 = ff_nvenc_encode_frame,
213  .close = ff_nvenc_encode_close,
214  .priv_data_size = sizeof(NvencContext),
215  .priv_class = &nvenc_h264_class,
216  .defaults = defaults,
217  .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
218  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
220  .wrapper_name = "nvenc",
221 };
222 #endif
223 
224 #endif
225 
226 static const AVClass h264_nvenc_class = {
227  .class_name = "h264_nvenc",
228  .item_name = av_default_item_name,
229  .option = options,
230  .version = LIBAVUTIL_VERSION_INT,
231 };
232 
234  .name = "h264_nvenc",
235  .long_name = NULL_IF_CONFIG_SMALL("NVIDIA NVENC H.264 encoder"),
236  .type = AVMEDIA_TYPE_VIDEO,
237  .id = AV_CODEC_ID_H264,
238  .init = ff_nvenc_encode_init,
239  .send_frame = ff_nvenc_send_frame,
240  .receive_packet = ff_nvenc_receive_packet,
241  .encode2 = ff_nvenc_encode_frame,
242  .close = ff_nvenc_encode_close,
243  .priv_data_size = sizeof(NvencContext),
244  .priv_class = &h264_nvenc_class,
245  .defaults = defaults,
246  .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
247  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
249  .wrapper_name = "nvenc",
250 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#define NULL
Definition: coverity.c:32
av_cold int ff_nvenc_encode_close(AVCodecContext *avctx)
Definition: nvenc.c:1449
static av_cold int nvenc_old_init(AVCodecContext *avctx)
Definition: nvenc_h264.c:161
AVOption.
Definition: opt.h:246
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
#define AV_CODEC_CAP_HARDWARE
Codec is backed by a hardware implementation.
Definition: avcodec.h:1081
static const AVClass h264_nvenc_class
Definition: nvenc_h264.c:226
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
int ff_nvenc_receive_packet(AVCodecContext *avctx, AVPacket *pkt)
Definition: nvenc.c:2206
AVCodec.
Definition: avcodec.h:3492
static const AVCodecDefault defaults[]
Definition: nvenc_h264.c:146
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:1009
#define av_cold
Definition: attributes.h:82
enum AVPixelFormat ff_nvenc_pix_fmts[]
Definition: nvenc.c:42
#define VE
Definition: nvenc_h264.c:27
#define MAX_REGISTERED_FRAMES
Definition: nvenc.h:39
#define av_log(a,...)
AVCodec ff_h264_nvenc_encoder
Definition: nvenc_h264.c:233
#define RCD(rc_mode)
Definition: nvenc.h:41
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const char * name
Name of the codec implementation.
Definition: avcodec.h:3499
int ff_nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame)
Definition: nvenc.c:2078
common internal API header
int dpb_size
Definition: h264_levels.c:107
av_cold int ff_nvenc_encode_init(AVCodecContext *avctx)
Definition: nvenc.c:1524
int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: nvenc.c:2242
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about quality
AVCodec ff_nvenc_h264_encoder
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1568
static int FUNC() aud(CodedBitstreamContext *ctx, RWContext *rw, H264RawAUD *current)
Describe the class of an AVClass context structure.
Definition: log.h:67
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
mfxU16 profile
Definition: qsvenc.c:44
AVCodec ff_nvenc_encoder
uint8_t level
Definition: svq3.c:207
preset
Definition: vf_curves.c:46
common internal api header.
#define OFFSET(x)
Definition: nvenc_h264.c:26
static const AVOption options[]
Definition: nvenc_h264.c:28