[deb_ffmpeg.git] / ffmpeg / libavformat / hlsenc.c

/*
 * Apple HTTP Live Streaming segmenter
 * Copyright (c) 2012, Luca Barbato
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <float.h>
#include <stdint.h>

#include "libavutil/avassert.h"
#include "libavutil/mathematics.h"
#include "libavutil/parseutils.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"

#include "avformat.h"
#include "internal.h"

typedef struct HLSSegment {
    char filename[1024];
    double duration; /* in seconds */

    struct HLSSegment *next;
} HLSSegment;

typedef struct HLSContext {
    const AVClass *class;  // Class for private options.
    unsigned number;
    int64_t sequence;
    int64_t start_sequence;
    AVOutputFormat *oformat;

    AVFormatContext *avf;

    float time;            // Set by a private option.
    int max_nb_segments;   // Set by a private option.
    int  wrap;             // Set by a private option.

    int64_t recording_time;
    int has_video;
    int64_t start_pts;
    int64_t end_pts;
    double duration;      // last segment duration computed so far, in seconds
    int nb_entries;

    HLSSegment *segments;
    HLSSegment *last_segment;

    char *basename;
    char *baseurl;

    AVIOContext *pb;
} HLSContext;

static int hls_mux_init(AVFormatContext *s)
{
    HLSContext *hls = s->priv_data;
    AVFormatContext *oc;
    int i;

    hls->avf = oc = avformat_alloc_context();
    if (!oc)
        return AVERROR(ENOMEM);

    oc->oformat            = hls->oformat;
    oc->interrupt_callback = s->interrupt_callback;
    av_dict_copy(&oc->metadata, s->metadata, 0);

    for (i = 0; i < s->nb_streams; i++) {
        AVStream *st;
        if (!(st = avformat_new_stream(oc, NULL)))
            return AVERROR(ENOMEM);
        avcodec_copy_context(st->codec, s->streams[i]->codec);
        st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
    }

    return 0;
}

/* Create a new segment and append it to the segment list */
static int hls_append_segment(HLSContext *hls, double duration)
{
    HLSSegment *en = av_malloc(sizeof(*en));

    if (!en)
        return AVERROR(ENOMEM);

    av_strlcpy(en->filename, av_basename(hls->avf->filename), sizeof(en->filename));

    en->duration = duration;
    en->next     = NULL;

    if (!hls->segments)
        hls->segments = en;
    else
        hls->last_segment->next = en;

    hls->last_segment = en;

    if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
        en = hls->segments;
        hls->segments = en->next;
        av_free(en);
    } else
        hls->nb_entries++;

    hls->sequence++;

    return 0;
}

static void hls_free_segments(HLSContext *hls)
{
    HLSSegment *p = hls->segments, *en;

    while(p) {
        en = p;
        p = p->next;
        av_free(en);
    }
}

static int hls_window(AVFormatContext *s, int last)
{
    HLSContext *hls = s->priv_data;
    HLSSegment *en;
    int target_duration = 0;
    int ret = 0;
    int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);

    if ((ret = avio_open2(&hls->pb, s->filename, AVIO_FLAG_WRITE,
                          &s->interrupt_callback, NULL)) < 0)
        goto fail;

    for (en = hls->segments; en; en = en->next) {
        if (target_duration < en->duration)
            target_duration = ceil(en->duration);
    }

    avio_printf(hls->pb, "#EXTM3U\n");
    avio_printf(hls->pb, "#EXT-X-VERSION:3\n");
    avio_printf(hls->pb, "#EXT-X-TARGETDURATION:%d\n", target_duration);
    avio_printf(hls->pb, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);

    av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
           sequence);

    for (en = hls->segments; en; en = en->next) {
        avio_printf(hls->pb, "#EXTINF:%f,\n", en->duration);
        if (hls->baseurl)
            avio_printf(hls->pb, "%s", hls->baseurl);
        avio_printf(hls->pb, "%s\n", en->filename);
    }

    if (last)
        avio_printf(hls->pb, "#EXT-X-ENDLIST\n");

fail:
    avio_closep(&hls->pb);
    return ret;
}

static int hls_start(AVFormatContext *s)
{
    HLSContext *c = s->priv_data;
    AVFormatContext *oc = c->avf;
    int err = 0;

    if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
                              c->basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0) {
        av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->basename);
        return AVERROR(EINVAL);
    }
    c->number++;

    if ((err = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE,
                          &s->interrupt_callback, NULL)) < 0)
        return err;

    if (oc->oformat->priv_class && oc->priv_data)
        av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);

    return 0;
}

static int hls_write_header(AVFormatContext *s)
{
    HLSContext *hls = s->priv_data;
    int ret, i;
    char *p;
    const char *pattern = "%d.ts";
    int basename_size = strlen(s->filename) + strlen(pattern) + 1;

    hls->sequence       = hls->start_sequence;
    hls->recording_time = hls->time * AV_TIME_BASE;
    hls->start_pts      = AV_NOPTS_VALUE;

    for (i = 0; i < s->nb_streams; i++)
        hls->has_video +=
            s->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO;

    if (hls->has_video > 1)
        av_log(s, AV_LOG_WARNING,
               "More than a single video stream present, "
               "expect issues decoding it.\n");

    hls->oformat = av_guess_format("mpegts", NULL, NULL);

    if (!hls->oformat) {
        ret = AVERROR_MUXER_NOT_FOUND;
        goto fail;
    }

    hls->basename = av_malloc(basename_size);

    if (!hls->basename) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }

    strcpy(hls->basename, s->filename);

    p = strrchr(hls->basename, '.');

    if (p)
        *p = '\0';

    av_strlcat(hls->basename, pattern, basename_size);

    if ((ret = hls_mux_init(s)) < 0)
        goto fail;

    if ((ret = hls_start(s)) < 0)
        goto fail;

    if ((ret = avformat_write_header(hls->avf, NULL)) < 0)
        goto fail;

    av_assert0(s->nb_streams == hls->avf->nb_streams);
    for (i = 0; i < s->nb_streams; i++) {
        AVStream *inner_st  = hls->avf->streams[i];
        AVStream *outter_st = s->streams[i];
        avpriv_set_pts_info(outter_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
    }

fail:
    if (ret) {
        av_free(hls->basename);
        if (hls->avf)
            avformat_free_context(hls->avf);
    }
    return ret;
}

static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
{
    HLSContext *hls = s->priv_data;
    AVFormatContext *oc = hls->avf;
    AVStream *st = s->streams[pkt->stream_index];
    int64_t end_pts = hls->recording_time * hls->number;
    int is_ref_pkt = 1;
    int ret, can_split = 1;

    if (hls->start_pts == AV_NOPTS_VALUE) {
        hls->start_pts = pkt->pts;
        hls->end_pts   = pkt->pts;
    }

    if (hls->has_video) {
        can_split = st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
                    pkt->flags & AV_PKT_FLAG_KEY;
        is_ref_pkt = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
    }
    if (pkt->pts == AV_NOPTS_VALUE)
        is_ref_pkt = can_split = 0;

    if (is_ref_pkt)
        hls->duration = (double)(pkt->pts - hls->end_pts)
                                   * st->time_base.num / st->time_base.den;

    if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
                                   end_pts, AV_TIME_BASE_Q) >= 0) {
        ret = hls_append_segment(hls, hls->duration);
        if (ret)
            return ret;

        hls->end_pts = pkt->pts;
        hls->duration = 0;

        av_write_frame(oc, NULL); /* Flush any buffered data */
        avio_close(oc->pb);

        ret = hls_start(s);

        if (ret)
            return ret;

        oc = hls->avf;

        if ((ret = hls_window(s, 0)) < 0)
            return ret;
    }

    ret = ff_write_chained(oc, pkt->stream_index, pkt, s, 0);

    return ret;
}

static int hls_write_trailer(struct AVFormatContext *s)
{
    HLSContext *hls = s->priv_data;
    AVFormatContext *oc = hls->avf;

    av_write_trailer(oc);
    avio_closep(&oc->pb);
    avformat_free_context(oc);
    av_free(hls->basename);
    hls_append_segment(hls, hls->duration);
    hls_window(s, 1);

    hls_free_segments(hls);
    avio_close(hls->pb);
    return 0;
}

#define OFFSET(x) offsetof(HLSContext, x)
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
    {"start_number",  "set first number in the sequence",        OFFSET(start_sequence),AV_OPT_TYPE_INT64,  {.i64 = 0},     0, INT64_MAX, E},
    {"hls_time",      "set segment length in seconds",           OFFSET(time),    AV_OPT_TYPE_FLOAT,  {.dbl = 2},     0, FLT_MAX, E},
    {"hls_list_size", "set maximum number of playlist entries",  OFFSET(max_nb_segments),    AV_OPT_TYPE_INT,    {.i64 = 5},     0, INT_MAX, E},
    {"hls_wrap",      "set number after which the index wraps",  OFFSET(wrap),    AV_OPT_TYPE_INT,    {.i64 = 0},     0, INT_MAX, E},
    {"hls_base_url",  "url to prepend to each playlist entry",   OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,       E},
    { NULL },
};

static const AVClass hls_class = {
    .class_name = "hls muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
};


AVOutputFormat ff_hls_muxer = {
    .name           = "hls",
    .long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
    .extensions     = "m3u8",
    .priv_data_size = sizeof(HLSContext),
    .audio_codec    = AV_CODEC_ID_AAC,
    .video_codec    = AV_CODEC_ID_H264,
    .flags          = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
    .write_header   = hls_write_header,
    .write_packet   = hls_write_packet,
    .write_trailer  = hls_write_trailer,
    .priv_class     = &hls_class,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Apple HTTP Live Streaming segmenter
	3	* Copyright (c) 2012, Luca Barbato
	4	*
	5	* This file is part of FFmpeg.
	6	*
	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.
	11	*
	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.
	16	*
	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
	20	*/
	21
	22	#include <float.h>
	23	#include <stdint.h>
	24
	25	#include "libavutil/avassert.h"
	26	#include "libavutil/mathematics.h"
	27	#include "libavutil/parseutils.h"
	28	#include "libavutil/avstring.h"
	29	#include "libavutil/opt.h"
	30	#include "libavutil/log.h"
	31
	32	#include "avformat.h"
	33	#include "internal.h"
	34
	35	typedef struct HLSSegment {
	36	char filename[1024];
	37	double duration; /* in seconds */
	38
	39	struct HLSSegment *next;
	40	} HLSSegment;
	41
	42	typedef struct HLSContext {
	43	const AVClass *class; // Class for private options.
	44	unsigned number;
	45	int64_t sequence;
	46	int64_t start_sequence;
	47	AVOutputFormat *oformat;
	48
	49	AVFormatContext *avf;
	50
	51	float time; // Set by a private option.
	52	int max_nb_segments; // Set by a private option.
	53	int wrap; // Set by a private option.
	54
	55	int64_t recording_time;
	56	int has_video;
	57	int64_t start_pts;
	58	int64_t end_pts;
	59	double duration; // last segment duration computed so far, in seconds
	60	int nb_entries;
	61
	62	HLSSegment *segments;
	63	HLSSegment *last_segment;
	64
65	char *basename;
66	char *baseurl;
67
68	AVIOContext *pb;
69	} HLSContext;
70
71	static int hls_mux_init(AVFormatContext *s)
72	{
73	HLSContext *hls = s->priv_data;
74	AVFormatContext *oc;
75	int i;
76
77	hls->avf = oc = avformat_alloc_context();
78	if (!oc)
79	return AVERROR(ENOMEM);
80
81	oc->oformat = hls->oformat;
82	oc->interrupt_callback = s->interrupt_callback;
83	av_dict_copy(&oc->metadata, s->metadata, 0);
84
85	for (i = 0; i < s->nb_streams; i++) {
86	AVStream *st;
87	if (!(st = avformat_new_stream(oc, NULL)))
88	return AVERROR(ENOMEM);
89	avcodec_copy_context(st->codec, s->streams[i]->codec);
90	st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
91	}
92
93	return 0;
94	}
95
96	/* Create a new segment and append it to the segment list */
97	static int hls_append_segment(HLSContext *hls, double duration)
98	{
99	HLSSegment en = av_malloc(sizeof(en));
100
101	if (!en)
102	return AVERROR(ENOMEM);
103
104	av_strlcpy(en->filename, av_basename(hls->avf->filename), sizeof(en->filename));
105
106	en->duration = duration;
107	en->next = NULL;
108
109	if (!hls->segments)
110	hls->segments = en;
111	else
112	hls->last_segment->next = en;
113
114	hls->last_segment = en;
115
116	if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
117	en = hls->segments;
118	hls->segments = en->next;
119	av_free(en);
120	} else
121	hls->nb_entries++;
122
123	hls->sequence++;
124
125	return 0;
126	}
127
128	static void hls_free_segments(HLSContext *hls)
129	{
130	HLSSegment p = hls->segments, en;
131
132	while(p) {
133	en = p;
134	p = p->next;
135	av_free(en);
136	}
137	}
138
139	static int hls_window(AVFormatContext *s, int last)
140	{
141	HLSContext *hls = s->priv_data;
142	HLSSegment *en;
143	int target_duration = 0;
144	int ret = 0;
145	int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
146
147	if ((ret = avio_open2(&hls->pb, s->filename, AVIO_FLAG_WRITE,
148	&s->interrupt_callback, NULL)) < 0)
149	goto fail;
150
151	for (en = hls->segments; en; en = en->next) {
152	if (target_duration < en->duration)
153	target_duration = ceil(en->duration);
154	}
155
156	avio_printf(hls->pb, "#EXTM3U\n");
157	avio_printf(hls->pb, "#EXT-X-VERSION:3\n");
158	avio_printf(hls->pb, "#EXT-X-TARGETDURATION:%d\n", target_duration);
159	avio_printf(hls->pb, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
160
161	av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
162	sequence);
163
164	for (en = hls->segments; en; en = en->next) {
165	avio_printf(hls->pb, "#EXTINF:%f,\n", en->duration);
166	if (hls->baseurl)
167	avio_printf(hls->pb, "%s", hls->baseurl);
168	avio_printf(hls->pb, "%s\n", en->filename);
169	}
170
171	if (last)
172	avio_printf(hls->pb, "#EXT-X-ENDLIST\n");
173
174	fail:
175	avio_closep(&hls->pb);
176	return ret;
177	}
178
179	static int hls_start(AVFormatContext *s)
180	{
181	HLSContext *c = s->priv_data;
182	AVFormatContext *oc = c->avf;
183	int err = 0;
184
185	if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
186	c->basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0) {
187	av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->basename);
188	return AVERROR(EINVAL);
189	}
190	c->number++;
191
192	if ((err = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE,
193	&s->interrupt_callback, NULL)) < 0)
194	return err;
195
196	if (oc->oformat->priv_class && oc->priv_data)
197	av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
198
199	return 0;
200	}
201
202	static int hls_write_header(AVFormatContext *s)
203	{
204	HLSContext *hls = s->priv_data;
205	int ret, i;
206	char *p;
207	const char *pattern = "%d.ts";
208	int basename_size = strlen(s->filename) + strlen(pattern) + 1;
209
210	hls->sequence = hls->start_sequence;
211	hls->recording_time = hls->time * AV_TIME_BASE;
212	hls->start_pts = AV_NOPTS_VALUE;
213
214	for (i = 0; i < s->nb_streams; i++)
215	hls->has_video +=
216	s->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO;
217
218	if (hls->has_video > 1)
219	av_log(s, AV_LOG_WARNING,
220	"More than a single video stream present, "
221	"expect issues decoding it.\n");
222
223	hls->oformat = av_guess_format("mpegts", NULL, NULL);
224
225	if (!hls->oformat) {
226	ret = AVERROR_MUXER_NOT_FOUND;
227	goto fail;
228	}
229
230	hls->basename = av_malloc(basename_size);
231
232	if (!hls->basename) {
233	ret = AVERROR(ENOMEM);
234	goto fail;
235	}
236
237	strcpy(hls->basename, s->filename);
238
239	p = strrchr(hls->basename, '.');
240
241	if (p)
242	*p = '\0';
243
244	av_strlcat(hls->basename, pattern, basename_size);
245
246	if ((ret = hls_mux_init(s)) < 0)
247	goto fail;
248
249	if ((ret = hls_start(s)) < 0)
250	goto fail;
251
252	if ((ret = avformat_write_header(hls->avf, NULL)) < 0)
253	goto fail;
254
255	av_assert0(s->nb_streams == hls->avf->nb_streams);
256	for (i = 0; i < s->nb_streams; i++) {
257	AVStream *inner_st = hls->avf->streams[i];
258	AVStream *outter_st = s->streams[i];
259	avpriv_set_pts_info(outter_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
260	}
261
262	fail:
263	if (ret) {
264	av_free(hls->basename);
265	if (hls->avf)
266	avformat_free_context(hls->avf);
267	}
268	return ret;
269	}
270
271	static int hls_write_packet(AVFormatContext s, AVPacket pkt)
272	{
273	HLSContext *hls = s->priv_data;
274	AVFormatContext *oc = hls->avf;
275	AVStream *st = s->streams[pkt->stream_index];
276	int64_t end_pts = hls->recording_time * hls->number;
277	int is_ref_pkt = 1;
278	int ret, can_split = 1;
279
280	if (hls->start_pts == AV_NOPTS_VALUE) {
281	hls->start_pts = pkt->pts;
282	hls->end_pts = pkt->pts;
283	}
284
285	if (hls->has_video) {
286	can_split = st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
287	pkt->flags & AV_PKT_FLAG_KEY;
288	is_ref_pkt = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
289	}
290	if (pkt->pts == AV_NOPTS_VALUE)
291	is_ref_pkt = can_split = 0;
292
293	if (is_ref_pkt)
294	hls->duration = (double)(pkt->pts - hls->end_pts)
295	* st->time_base.num / st->time_base.den;
296
297	if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
298	end_pts, AV_TIME_BASE_Q) >= 0) {
299	ret = hls_append_segment(hls, hls->duration);
300	if (ret)
301	return ret;
302
303	hls->end_pts = pkt->pts;
304	hls->duration = 0;
305
306	av_write_frame(oc, NULL); /* Flush any buffered data */
307	avio_close(oc->pb);
308
309	ret = hls_start(s);
310
311	if (ret)
312	return ret;
313
314	oc = hls->avf;
315
316	if ((ret = hls_window(s, 0)) < 0)
317	return ret;
318	}
319
320	ret = ff_write_chained(oc, pkt->stream_index, pkt, s, 0);
321
322	return ret;
323	}
324
325	static int hls_write_trailer(struct AVFormatContext *s)
326	{
327	HLSContext *hls = s->priv_data;
328	AVFormatContext *oc = hls->avf;
329
330	av_write_trailer(oc);
331	avio_closep(&oc->pb);
332	avformat_free_context(oc);
333	av_free(hls->basename);
334	hls_append_segment(hls, hls->duration);
335	hls_window(s, 1);
336
337	hls_free_segments(hls);
338	avio_close(hls->pb);
339	return 0;
340	}
341
342	#define OFFSET(x) offsetof(HLSContext, x)
343	#define E AV_OPT_FLAG_ENCODING_PARAM
344	static const AVOption options[] = {
345	{"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
346	{"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
347	{"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
348	{"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
349	{"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
350	{ NULL },
351	};
352
353	static const AVClass hls_class = {
354	.class_name = "hls muxer",
355	.item_name = av_default_item_name,
356	.option = options,
357	.version = LIBAVUTIL_VERSION_INT,
358	};
359
360
361	AVOutputFormat ff_hls_muxer = {
362	.name = "hls",
363	.long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
364	.extensions = "m3u8",
365	.priv_data_size = sizeof(HLSContext),
366	.audio_codec = AV_CODEC_ID_AAC,
367	.video_codec = AV_CODEC_ID_H264,
368	.flags = AVFMT_NOFILE \| AVFMT_ALLOW_FLUSH,
369	.write_header = hls_write_header,
370	.write_packet = hls_write_packet,
371	.write_trailer = hls_write_trailer,
372	.priv_class = &hls_class,
373	};