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ismindex.c
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1 /*
2  * Copyright (c) 2012 Martin Storsjo
3  *
4  * This file is part of FFmpeg.
5  *
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.
10  *
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.
15  *
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
19  */
20 
21 /*
22  * To create a simple file for smooth streaming:
23  * ffmpeg <normal input/transcoding options> -movflags frag_keyframe foo.ismv
24  * ismindex -n foo foo.ismv
25  * This step creates foo.ism and foo.ismc that is required by IIS for
26  * serving it.
27  *
28  * With -ismf, it also creates foo.ismf, which maps fragment names to
29  * start-end offsets in the ismv, for use in your own streaming server.
30  *
31  * By adding -path-prefix path/, the produced foo.ism will refer to the
32  * files foo.ismv as "path/foo.ismv" - the prefix for the generated ismc
33  * file can be set with the -ismc-prefix option similarly.
34  *
35  * To pre-split files for serving as static files by a web server without
36  * any extra server support, create the ismv file as above, and split it:
37  * ismindex -split foo.ismv
38  * This step creates a file Manifest and directories QualityLevel(...),
39  * that can be read directly by a smooth streaming player.
40  *
41  * The -output dir option can be used to request that output files
42  * (both .ism/.ismc, or Manifest/QualityLevels* when splitting)
43  * should be written to this directory instead of in the current directory.
44  * (The directory itself isn't created if it doesn't already exist.)
45  */
46 
47 #include <stdio.h>
48 #include <string.h>
49 
50 #include "cmdutils.h"
51 
52 #include "libavformat/avformat.h"
53 #include "libavformat/os_support.h"
54 #include "libavutil/intreadwrite.h"
55 #include "libavutil/mathematics.h"
56 
57 static int usage(const char *argv0, int ret)
58 {
59  fprintf(stderr, "%s [-split] [-ismf] [-n basename] [-path-prefix prefix] "
60  "[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0);
61  return ret;
62 }
63 
64 struct MoofOffset {
65  int64_t time;
66  int64_t offset;
67  int64_t duration;
68 };
69 
70 struct Track {
71  const char *name;
72  int64_t duration;
73  int bitrate;
74  int track_id;
76  int width, height;
77  int chunks;
82  int timescale;
83  const char *fourcc;
84  int blocksize;
85  int tag;
86 };
87 
88 struct Tracks {
89  int nb_tracks;
90  int64_t duration;
91  struct Track **tracks;
94 };
95 
96 static int expect_tag(int32_t got_tag, int32_t expected_tag) {
97  if (got_tag != expected_tag) {
98  char got_tag_str[4], expected_tag_str[4];
99  AV_WB32(got_tag_str, got_tag);
100  AV_WB32(expected_tag_str, expected_tag);
101  fprintf(stderr, "wanted tag %.4s, got %.4s\n", expected_tag_str,
102  got_tag_str);
103  return -1;
104  }
105  return 0;
106 }
107 
108 static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
109 {
110  int32_t size, tag;
111 
112  size = avio_rb32(in);
113  tag = avio_rb32(in);
114  avio_wb32(out, size);
115  avio_wb32(out, tag);
116  if (expect_tag(tag, tag_name) != 0)
117  return -1;
118  size -= 8;
119  while (size > 0) {
120  char buf[1024];
121  int len = FFMIN(sizeof(buf), size);
122  int got;
123  if ((got = avio_read(in, buf, len)) != len) {
124  fprintf(stderr, "short read, wanted %d, got %d\n", len, got);
125  break;
126  }
127  avio_write(out, buf, len);
128  size -= len;
129  }
130  return 0;
131 }
132 
133 static int skip_tag(AVIOContext *in, int32_t tag_name)
134 {
135  int64_t pos = avio_tell(in);
136  int32_t size, tag;
137 
138  size = avio_rb32(in);
139  tag = avio_rb32(in);
140  if (expect_tag(tag, tag_name) != 0)
141  return -1;
142  avio_seek(in, pos + size, SEEK_SET);
143  return 0;
144 }
145 
146 static int write_fragment(const char *filename, AVIOContext *in)
147 {
148  AVIOContext *out = NULL;
149  int ret;
150 
151  if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0) {
152  char errbuf[100];
153  av_strerror(ret, errbuf, sizeof(errbuf));
154  fprintf(stderr, "Unable to open %s: %s\n", filename, errbuf);
155  return ret;
156  }
157  ret = copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
158  if (!ret)
159  ret = copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
160 
161  avio_flush(out);
162  avio_close(out);
163 
164  return ret;
165 }
166 
168 {
169  int ret;
170  ret = skip_tag(in, MKBETAG('m', 'o', 'o', 'f'));
171  if (!ret)
172  ret = skip_tag(in, MKBETAG('m', 'd', 'a', 't'));
173  return ret;
174 }
175 
176 static int write_fragments(struct Tracks *tracks, int start_index,
177  AVIOContext *in, const char *basename,
178  int split, int ismf, const char* output_prefix)
179 {
180  char dirname[2048], filename[2048], idxname[2048];
181  int i, j, ret = 0, fragment_ret;
182  FILE* out = NULL;
183 
184  if (ismf) {
185  snprintf(idxname, sizeof(idxname), "%s%s.ismf", output_prefix, basename);
186  out = fopen(idxname, "w");
187  if (!out) {
188  ret = AVERROR(errno);
189  perror(idxname);
190  goto fail;
191  }
192  }
193  for (i = start_index; i < tracks->nb_tracks; i++) {
194  struct Track *track = tracks->tracks[i];
195  const char *type = track->is_video ? "video" : "audio";
196  snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate);
197  if (split) {
198  if (mkdir(dirname, 0777) == -1 && errno != EEXIST) {
199  ret = AVERROR(errno);
200  perror(dirname);
201  goto fail;
202  }
203  }
204  for (j = 0; j < track->chunks; j++) {
205  snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
206  dirname, type, track->offsets[j].time);
207  avio_seek(in, track->offsets[j].offset, SEEK_SET);
208  if (ismf)
209  fprintf(out, "%s %"PRId64, filename, avio_tell(in));
210  if (split)
211  fragment_ret = write_fragment(filename, in);
212  else
213  fragment_ret = skip_fragment(in);
214  if (ismf)
215  fprintf(out, " %"PRId64"\n", avio_tell(in));
216  if (fragment_ret != 0) {
217  fprintf(stderr, "failed fragment %d in track %d (%s)\n", j,
218  track->track_id, track->name);
219  ret = fragment_ret;
220  }
221  }
222  }
223 fail:
224  if (out)
225  fclose(out);
226  return ret;
227 }
228 
229 static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
230 {
231  int ret = AVERROR_EOF, track_id;
232  int version, fieldlength, i, j;
233  int64_t pos = avio_tell(f);
234  uint32_t size = avio_rb32(f);
235  struct Track *track = NULL;
236 
237  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
238  goto fail;
239  version = avio_r8(f);
240  avio_rb24(f);
241  track_id = avio_rb32(f); /* track id */
242  for (i = start_index; i < tracks->nb_tracks && !track; i++)
243  if (tracks->tracks[i]->track_id == track_id)
244  track = tracks->tracks[i];
245  if (!track) {
246  /* Ok, continue parsing the next atom */
247  ret = 0;
248  goto fail;
249  }
250  fieldlength = avio_rb32(f);
251  track->chunks = avio_rb32(f);
252  track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets));
253  if (!track->offsets) {
254  ret = AVERROR(ENOMEM);
255  goto fail;
256  }
257  for (i = 0; i < track->chunks; i++) {
258  if (version == 1) {
259  track->offsets[i].time = avio_rb64(f);
260  track->offsets[i].offset = avio_rb64(f);
261  } else {
262  track->offsets[i].time = avio_rb32(f);
263  track->offsets[i].offset = avio_rb32(f);
264  }
265  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
266  avio_r8(f);
267  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
268  avio_r8(f);
269  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
270  avio_r8(f);
271  if (i > 0)
272  track->offsets[i - 1].duration = track->offsets[i].time -
273  track->offsets[i - 1].time;
274  }
275  if (track->chunks > 0)
276  track->offsets[track->chunks - 1].duration = track->duration -
277  track->offsets[track->chunks - 1].time;
278  ret = 0;
279 
280 fail:
281  avio_seek(f, pos + size, SEEK_SET);
282  return ret;
283 }
284 
285 static int read_mfra(struct Tracks *tracks, int start_index,
286  const char *file, int split, int ismf,
287  const char *basename, const char* output_prefix)
288 {
289  int err = 0;
290  const char* err_str = "";
291  AVIOContext *f = NULL;
292  int32_t mfra_size;
293 
294  if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
295  goto fail;
296  avio_seek(f, avio_size(f) - 4, SEEK_SET);
297  mfra_size = avio_rb32(f);
298  avio_seek(f, -mfra_size, SEEK_CUR);
299  if (avio_rb32(f) != mfra_size) {
300  err = AVERROR_INVALIDDATA;
301  err_str = "mfra size mismatch";
302  goto fail;
303  }
304  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
305  err = AVERROR_INVALIDDATA;
306  err_str = "mfra tag mismatch";
307  goto fail;
308  }
309  while (!read_tfra(tracks, start_index, f)) {
310  /* Empty */
311  }
312 
313  if (split || ismf)
314  err = write_fragments(tracks, start_index, f, basename, split, ismf,
315  output_prefix);
316  err_str = "error in write_fragments";
317 
318 fail:
319  if (f)
320  avio_close(f);
321  if (err)
322  fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str);
323  return err;
324 }
325 
326 static int get_private_data(struct Track *track, AVCodecContext *codec)
327 {
328  track->codec_private_size = codec->extradata_size;
329  track->codec_private = av_mallocz(codec->extradata_size);
330  if (!track->codec_private)
331  return AVERROR(ENOMEM);
332  memcpy(track->codec_private, codec->extradata, codec->extradata_size);
333  return 0;
334 }
335 
336 static int get_video_private_data(struct Track *track, AVCodecContext *codec)
337 {
338  AVIOContext *io = NULL;
339  uint16_t sps_size, pps_size;
340  int err;
341 
342  if (codec->codec_id == AV_CODEC_ID_VC1)
343  return get_private_data(track, codec);
344 
345  if ((err = avio_open_dyn_buf(&io)) < 0)
346  goto fail;
347  err = AVERROR(EINVAL);
348  if (codec->extradata_size < 11 || codec->extradata[0] != 1)
349  goto fail;
350  sps_size = AV_RB16(&codec->extradata[6]);
351  if (11 + sps_size > codec->extradata_size)
352  goto fail;
353  avio_wb32(io, 0x00000001);
354  avio_write(io, &codec->extradata[8], sps_size);
355  pps_size = AV_RB16(&codec->extradata[9 + sps_size]);
356  if (11 + sps_size + pps_size > codec->extradata_size)
357  goto fail;
358  avio_wb32(io, 0x00000001);
359  avio_write(io, &codec->extradata[11 + sps_size], pps_size);
360  err = 0;
361 
362 fail:
364  return err;
365 }
366 
367 static int handle_file(struct Tracks *tracks, const char *file, int split,
368  int ismf, const char *basename,
369  const char* output_prefix)
370 {
371  AVFormatContext *ctx = NULL;
372  int err = 0, i, orig_tracks = tracks->nb_tracks;
373  char errbuf[50], *ptr;
374  struct Track *track;
375 
376  err = avformat_open_input(&ctx, file, NULL, NULL);
377  if (err < 0) {
378  av_strerror(err, errbuf, sizeof(errbuf));
379  fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
380  return 1;
381  }
382 
383  err = avformat_find_stream_info(ctx, NULL);
384  if (err < 0) {
385  av_strerror(err, errbuf, sizeof(errbuf));
386  fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
387  goto fail;
388  }
389 
390  if (ctx->nb_streams < 1) {
391  fprintf(stderr, "No streams found in %s\n", file);
392  goto fail;
393  }
394 
395  for (i = 0; i < ctx->nb_streams; i++) {
396  struct Track **temp;
397  AVStream *st = ctx->streams[i];
398 
399  if (st->codec->bit_rate == 0) {
400  fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
401  st->id, file);
402  continue;
403  }
404 
405  track = av_mallocz(sizeof(*track));
406  if (!track) {
407  err = AVERROR(ENOMEM);
408  goto fail;
409  }
410  temp = av_realloc(tracks->tracks,
411  sizeof(*tracks->tracks) * (tracks->nb_tracks + 1));
412  if (!temp) {
413  av_free(track);
414  err = AVERROR(ENOMEM);
415  goto fail;
416  }
417  tracks->tracks = temp;
418  tracks->tracks[tracks->nb_tracks] = track;
419 
420  track->name = file;
421  if ((ptr = strrchr(file, '/')))
422  track->name = ptr + 1;
423 
424  track->bitrate = st->codec->bit_rate;
425  track->track_id = st->id;
426  track->timescale = st->time_base.den;
427  track->duration = st->duration;
428  track->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
429  track->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
430 
431  if (!track->is_audio && !track->is_video) {
432  fprintf(stderr,
433  "Track %d in %s is neither video nor audio, skipping\n",
434  track->track_id, file);
435  av_freep(&tracks->tracks[tracks->nb_tracks]);
436  continue;
437  }
438 
439  tracks->duration = FFMAX(tracks->duration,
441  track->timescale, AV_ROUND_UP));
442 
443  if (track->is_audio) {
444  if (tracks->audio_track < 0)
445  tracks->audio_track = tracks->nb_tracks;
446  tracks->nb_audio_tracks++;
447  track->channels = st->codec->channels;
448  track->sample_rate = st->codec->sample_rate;
449  if (st->codec->codec_id == AV_CODEC_ID_AAC) {
450  track->fourcc = "AACL";
451  track->tag = 255;
452  track->blocksize = 4;
453  } else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) {
454  track->fourcc = "WMAP";
455  track->tag = st->codec->codec_tag;
456  track->blocksize = st->codec->block_align;
457  }
458  get_private_data(track, st->codec);
459  }
460  if (track->is_video) {
461  if (tracks->video_track < 0)
462  tracks->video_track = tracks->nb_tracks;
463  tracks->nb_video_tracks++;
464  track->width = st->codec->width;
465  track->height = st->codec->height;
466  if (st->codec->codec_id == AV_CODEC_ID_H264)
467  track->fourcc = "H264";
468  else if (st->codec->codec_id == AV_CODEC_ID_VC1)
469  track->fourcc = "WVC1";
470  get_video_private_data(track, st->codec);
471  }
472 
473  tracks->nb_tracks++;
474  }
475 
476  avformat_close_input(&ctx);
477 
478  err = read_mfra(tracks, orig_tracks, file, split, ismf, basename,
479  output_prefix);
480 
481 fail:
482  if (ctx)
483  avformat_close_input(&ctx);
484  return err;
485 }
486 
487 static void output_server_manifest(struct Tracks *tracks, const char *basename,
488  const char *output_prefix,
489  const char *path_prefix,
490  const char *ismc_prefix)
491 {
492  char filename[1000];
493  FILE *out;
494  int i;
495 
496  snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
497  out = fopen(filename, "w");
498  if (!out) {
499  perror(filename);
500  return;
501  }
502  fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
503  fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
504  fprintf(out, "\t<head>\n");
505  fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
506  "content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
507  fprintf(out, "\t</head>\n");
508  fprintf(out, "\t<body>\n");
509  fprintf(out, "\t\t<switch>\n");
510  for (i = 0; i < tracks->nb_tracks; i++) {
511  struct Track *track = tracks->tracks[i];
512  const char *type = track->is_video ? "video" : "audio";
513  fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
514  type, path_prefix, track->name, track->bitrate);
515  fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
516  "valueType=\"data\" />\n", track->track_id);
517  fprintf(out, "\t\t\t</%s>\n", type);
518  }
519  fprintf(out, "\t\t</switch>\n");
520  fprintf(out, "\t</body>\n");
521  fprintf(out, "</smil>\n");
522  fclose(out);
523 }
524 
525 static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
526  const char *type)
527 {
528  int i, j;
529  struct Track *track = tracks->tracks[main];
530  int should_print_time_mismatch = 1;
531 
532  for (i = 0; i < track->chunks; i++) {
533  for (j = main + 1; j < tracks->nb_tracks; j++) {
534  if (tracks->tracks[j]->is_audio == track->is_audio) {
535  if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) {
536  fprintf(stderr, "Mismatched duration of %s chunk %d in %s (%d) and %s (%d)\n",
537  type, i, track->name, main, tracks->tracks[j]->name, j);
538  should_print_time_mismatch = 1;
539  }
540  if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) {
541  if (should_print_time_mismatch)
542  fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n",
543  type, i, track->name, main, tracks->tracks[j]->name, j);
544  should_print_time_mismatch = 0;
545  }
546  }
547  }
548  fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" />\n",
549  i, track->offsets[i].duration);
550  }
551 }
552 
553 static void output_client_manifest(struct Tracks *tracks, const char *basename,
554  const char *output_prefix, int split)
555 {
556  char filename[1000];
557  FILE *out;
558  int i, j;
559 
560  if (split)
561  snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
562  else
563  snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
564  out = fopen(filename, "w");
565  if (!out) {
566  perror(filename);
567  return;
568  }
569  fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
570  fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
571  "Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
572  if (tracks->video_track >= 0) {
573  struct Track *track = tracks->tracks[tracks->video_track];
574  struct Track *first_track = track;
575  int index = 0;
576  fprintf(out,
577  "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
578  "Chunks=\"%d\" "
579  "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
580  tracks->nb_video_tracks, track->chunks);
581  for (i = 0; i < tracks->nb_tracks; i++) {
582  track = tracks->tracks[i];
583  if (!track->is_video)
584  continue;
585  fprintf(out,
586  "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
587  "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
588  "CodecPrivateData=\"",
589  index, track->bitrate, track->fourcc, track->width, track->height);
590  for (j = 0; j < track->codec_private_size; j++)
591  fprintf(out, "%02X", track->codec_private[j]);
592  fprintf(out, "\" />\n");
593  index++;
594  if (track->chunks != first_track->chunks)
595  fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n",
596  track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks);
597  }
598  print_track_chunks(out, tracks, tracks->video_track, "video");
599  fprintf(out, "\t</StreamIndex>\n");
600  }
601  if (tracks->audio_track >= 0) {
602  struct Track *track = tracks->tracks[tracks->audio_track];
603  struct Track *first_track = track;
604  int index = 0;
605  fprintf(out,
606  "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
607  "Chunks=\"%d\" "
608  "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
609  tracks->nb_audio_tracks, track->chunks);
610  for (i = 0; i < tracks->nb_tracks; i++) {
611  track = tracks->tracks[i];
612  if (!track->is_audio)
613  continue;
614  fprintf(out,
615  "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
616  "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
617  "BitsPerSample=\"16\" PacketSize=\"%d\" "
618  "AudioTag=\"%d\" CodecPrivateData=\"",
619  index, track->bitrate, track->fourcc, track->sample_rate,
620  track->channels, track->blocksize, track->tag);
621  for (j = 0; j < track->codec_private_size; j++)
622  fprintf(out, "%02X", track->codec_private[j]);
623  fprintf(out, "\" />\n");
624  index++;
625  if (track->chunks != first_track->chunks)
626  fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
627  track->name, first_track->name);
628  }
629  print_track_chunks(out, tracks, tracks->audio_track, "audio");
630  fprintf(out, "\t</StreamIndex>\n");
631  }
632  fprintf(out, "</SmoothStreamingMedia>\n");
633  fclose(out);
634 }
635 
636 static void clean_tracks(struct Tracks *tracks)
637 {
638  int i;
639  for (i = 0; i < tracks->nb_tracks; i++) {
640  av_freep(&tracks->tracks[i]->codec_private);
641  av_freep(&tracks->tracks[i]->offsets);
642  av_freep(&tracks->tracks[i]);
643  }
644  av_freep(&tracks->tracks);
645  tracks->nb_tracks = 0;
646 }
647 
648 int main(int argc, char **argv)
649 {
650  const char *basename = NULL;
651  const char *path_prefix = "", *ismc_prefix = "";
652  const char *output_prefix = "";
653  char output_prefix_buf[2048];
654  int split = 0, ismf = 0, i;
655  struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
656 
657  av_register_all();
658 
659  for (i = 1; i < argc; i++) {
660  if (!strcmp(argv[i], "-n")) {
661  basename = argv[i + 1];
662  i++;
663  } else if (!strcmp(argv[i], "-path-prefix")) {
664  path_prefix = argv[i + 1];
665  i++;
666  } else if (!strcmp(argv[i], "-ismc-prefix")) {
667  ismc_prefix = argv[i + 1];
668  i++;
669  } else if (!strcmp(argv[i], "-output")) {
670  output_prefix = argv[i + 1];
671  i++;
672  if (output_prefix[strlen(output_prefix) - 1] != '/') {
673  snprintf(output_prefix_buf, sizeof(output_prefix_buf),
674  "%s/", output_prefix);
675  output_prefix = output_prefix_buf;
676  }
677  } else if (!strcmp(argv[i], "-split")) {
678  split = 1;
679  } else if (!strcmp(argv[i], "-ismf")) {
680  ismf = 1;
681  } else if (argv[i][0] == '-') {
682  return usage(argv[0], 1);
683  } else {
684  if (!basename)
685  ismf = 0;
686  if (handle_file(&tracks, argv[i], split, ismf,
687  basename, output_prefix))
688  return 1;
689  }
690  }
691  if (!tracks.nb_tracks || (!basename && !split))
692  return usage(argv[0], 1);
693 
694  if (!split)
695  output_server_manifest(&tracks, basename, output_prefix,
696  path_prefix, ismc_prefix);
697  output_client_manifest(&tracks, basename, output_prefix, split);
698 
699  clean_tracks(&tracks);
700 
701  return 0;
702 }