2 * Copyright (c) 2012 Martin Storsjo
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
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
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.
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.
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.
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.)
52 #include "libavformat/avformat.h"
53 #include "libavformat/isom.h"
54 #include "libavformat/os_support.h"
55 #include "libavutil/intreadwrite.h"
56 #include "libavutil/mathematics.h"
58 static int usage(const char *argv0, int ret)
60 fprintf(stderr, "%s [-split] [-ismf] [-n basename] [-path-prefix prefix] "
61 "[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0);
76 int is_audio, is_video;
79 int sample_rate, channels;
80 uint8_t *codec_private;
81 int codec_private_size;
82 struct MoofOffset *offsets;
92 struct Track **tracks;
93 int video_track, audio_track;
94 int nb_video_tracks, nb_audio_tracks;
97 static int expect_tag(int32_t got_tag, int32_t expected_tag) {
98 if (got_tag != expected_tag) {
99 char got_tag_str[4], expected_tag_str[4];
100 AV_WB32(got_tag_str, got_tag);
101 AV_WB32(expected_tag_str, expected_tag);
102 fprintf(stderr, "wanted tag %.4s, got %.4s\n", expected_tag_str,
109 static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
113 size = avio_rb32(in);
115 avio_wb32(out, size);
117 if (expect_tag(tag, tag_name) != 0)
122 int len = FFMIN(sizeof(buf), size);
124 if ((got = avio_read(in, buf, len)) != len) {
125 fprintf(stderr, "short read, wanted %d, got %d\n", len, got);
128 avio_write(out, buf, len);
134 static int skip_tag(AVIOContext *in, int32_t tag_name)
136 int64_t pos = avio_tell(in);
139 size = avio_rb32(in);
141 if (expect_tag(tag, tag_name) != 0)
143 avio_seek(in, pos + size, SEEK_SET);
147 static int write_fragment(const char *filename, AVIOContext *in)
149 AVIOContext *out = NULL;
152 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0) {
154 av_strerror(ret, errbuf, sizeof(errbuf));
155 fprintf(stderr, "Unable to open %s: %s\n", filename, errbuf);
158 ret = copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
160 ret = copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
168 static int skip_fragment(AVIOContext *in)
171 ret = skip_tag(in, MKBETAG('m', 'o', 'o', 'f'));
173 ret = skip_tag(in, MKBETAG('m', 'd', 'a', 't'));
177 static int write_fragments(struct Tracks *tracks, int start_index,
178 AVIOContext *in, const char *basename,
179 int split, int ismf, const char* output_prefix)
181 char dirname[2048], filename[2048], idxname[2048];
182 int i, j, ret = 0, fragment_ret;
186 snprintf(idxname, sizeof(idxname), "%s%s.ismf", output_prefix, basename);
187 out = fopen(idxname, "w");
189 ret = AVERROR(errno);
194 for (i = start_index; i < tracks->nb_tracks; i++) {
195 struct Track *track = tracks->tracks[i];
196 const char *type = track->is_video ? "video" : "audio";
197 snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate);
199 if (mkdir(dirname, 0777) == -1 && errno != EEXIST) {
200 ret = AVERROR(errno);
205 for (j = 0; j < track->chunks; j++) {
206 snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
207 dirname, type, track->offsets[j].time);
208 avio_seek(in, track->offsets[j].offset, SEEK_SET);
210 fprintf(out, "%s %"PRId64, filename, avio_tell(in));
212 fragment_ret = write_fragment(filename, in);
214 fragment_ret = skip_fragment(in);
216 fprintf(out, " %"PRId64"\n", avio_tell(in));
217 if (fragment_ret != 0) {
218 fprintf(stderr, "failed fragment %d in track %d (%s)\n", j,
219 track->track_id, track->name);
230 static int64_t read_trun_duration(AVIOContext *in, int default_duration,
237 avio_r8(in); /* version */
238 flags = avio_rb24(in);
239 if (default_duration <= 0 && !(flags & MOV_TRUN_SAMPLE_DURATION)) {
240 fprintf(stderr, "No sample duration in trun flags\n");
243 entries = avio_rb32(in);
245 if (flags & MOV_TRUN_DATA_OFFSET) avio_rb32(in);
246 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) avio_rb32(in);
249 for (i = 0; i < entries && pos < end; i++) {
250 int sample_duration = default_duration;
251 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(in);
252 if (flags & MOV_TRUN_SAMPLE_SIZE) avio_rb32(in);
253 if (flags & MOV_TRUN_SAMPLE_FLAGS) avio_rb32(in);
254 if (flags & MOV_TRUN_SAMPLE_CTS) avio_rb32(in);
255 if (sample_duration < 0) {
256 fprintf(stderr, "Negative sample duration %d\n", sample_duration);
259 ret += sample_duration;
266 static int64_t read_moof_duration(AVIOContext *in, int64_t offset)
269 int32_t moof_size, size, tag;
271 int default_duration = 0;
273 avio_seek(in, offset, SEEK_SET);
274 moof_size = avio_rb32(in);
276 if (expect_tag(tag, MKBETAG('m', 'o', 'o', 'f')) != 0)
278 while (pos < offset + moof_size) {
280 size = avio_rb32(in);
282 if (tag == MKBETAG('t', 'r', 'a', 'f')) {
283 int64_t traf_pos = pos;
284 int64_t traf_size = size;
285 while (pos < traf_pos + traf_size) {
287 size = avio_rb32(in);
289 if (tag == MKBETAG('t', 'f', 'h', 'd')) {
291 avio_r8(in); /* version */
292 flags = avio_rb24(in);
293 avio_rb32(in); /* track_id */
294 if (flags & MOV_TFHD_BASE_DATA_OFFSET)
296 if (flags & MOV_TFHD_STSD_ID)
298 if (flags & MOV_TFHD_DEFAULT_DURATION)
299 default_duration = avio_rb32(in);
301 if (tag == MKBETAG('t', 'r', 'u', 'n')) {
302 return read_trun_duration(in, default_duration,
305 avio_seek(in, pos + size, SEEK_SET);
307 fprintf(stderr, "Couldn't find trun\n");
310 avio_seek(in, pos + size, SEEK_SET);
312 fprintf(stderr, "Couldn't find traf\n");
318 static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
320 int ret = AVERROR_EOF, track_id;
321 int version, fieldlength, i, j;
322 int64_t pos = avio_tell(f);
323 uint32_t size = avio_rb32(f);
324 struct Track *track = NULL;
326 if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
328 version = avio_r8(f);
330 track_id = avio_rb32(f); /* track id */
331 for (i = start_index; i < tracks->nb_tracks && !track; i++)
332 if (tracks->tracks[i]->track_id == track_id)
333 track = tracks->tracks[i];
335 /* Ok, continue parsing the next atom */
339 fieldlength = avio_rb32(f);
340 track->chunks = avio_rb32(f);
341 track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets));
342 if (!track->offsets) {
343 ret = AVERROR(ENOMEM);
346 // The duration here is always the difference between consecutive
348 for (i = 0; i < track->chunks; i++) {
350 track->offsets[i].time = avio_rb64(f);
351 track->offsets[i].offset = avio_rb64(f);
353 track->offsets[i].time = avio_rb32(f);
354 track->offsets[i].offset = avio_rb32(f);
356 for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
358 for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
360 for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
363 track->offsets[i - 1].duration = track->offsets[i].time -
364 track->offsets[i - 1].time;
366 if (track->chunks > 0) {
367 track->offsets[track->chunks - 1].duration = track->offsets[0].time +
369 track->offsets[track->chunks - 1].time;
371 // Now try and read the actual durations from the trun sample data.
372 for (i = 0; i < track->chunks; i++) {
373 int64_t duration = read_moof_duration(f, track->offsets[i].offset);
374 if (duration > 0 && abs(duration - track->offsets[i].duration) > 3) {
375 // 3 allows for integer duration to drift a few units,
376 // e.g., for 1/3 durations
377 track->offsets[i].duration = duration;
380 if (track->chunks > 0) {
381 if (track->offsets[track->chunks - 1].duration <= 0) {
382 fprintf(stderr, "Calculated last chunk duration for track %d "
383 "was non-positive (%"PRId64"), probably due to missing "
384 "fragments ", track->track_id,
385 track->offsets[track->chunks - 1].duration);
386 if (track->chunks > 1) {
387 track->offsets[track->chunks - 1].duration =
388 track->offsets[track->chunks - 2].duration;
390 track->offsets[track->chunks - 1].duration = 1;
392 fprintf(stderr, "corrected to %"PRId64"\n",
393 track->offsets[track->chunks - 1].duration);
394 track->duration = track->offsets[track->chunks - 1].time +
395 track->offsets[track->chunks - 1].duration -
396 track->offsets[0].time;
397 fprintf(stderr, "Track duration corrected to %"PRId64"\n",
404 avio_seek(f, pos + size, SEEK_SET);
408 static int read_mfra(struct Tracks *tracks, int start_index,
409 const char *file, int split, int ismf,
410 const char *basename, const char* output_prefix)
413 const char* err_str = "";
414 AVIOContext *f = NULL;
417 if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
419 avio_seek(f, avio_size(f) - 4, SEEK_SET);
420 mfra_size = avio_rb32(f);
421 avio_seek(f, -mfra_size, SEEK_CUR);
422 if (avio_rb32(f) != mfra_size) {
423 err = AVERROR_INVALIDDATA;
424 err_str = "mfra size mismatch";
427 if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
428 err = AVERROR_INVALIDDATA;
429 err_str = "mfra tag mismatch";
432 while (!read_tfra(tracks, start_index, f)) {
437 err = write_fragments(tracks, start_index, f, basename, split, ismf,
439 err_str = "error in write_fragments";
445 fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str);
449 static int get_private_data(struct Track *track, AVCodecContext *codec)
451 track->codec_private_size = codec->extradata_size;
452 track->codec_private = av_mallocz(codec->extradata_size);
453 if (!track->codec_private)
454 return AVERROR(ENOMEM);
455 memcpy(track->codec_private, codec->extradata, codec->extradata_size);
459 static int get_video_private_data(struct Track *track, AVCodecContext *codec)
461 AVIOContext *io = NULL;
462 uint16_t sps_size, pps_size;
465 if (codec->codec_id == AV_CODEC_ID_VC1)
466 return get_private_data(track, codec);
468 if ((err = avio_open_dyn_buf(&io)) < 0)
470 err = AVERROR(EINVAL);
471 if (codec->extradata_size < 11 || codec->extradata[0] != 1)
473 sps_size = AV_RB16(&codec->extradata[6]);
474 if (11 + sps_size > codec->extradata_size)
476 avio_wb32(io, 0x00000001);
477 avio_write(io, &codec->extradata[8], sps_size);
478 pps_size = AV_RB16(&codec->extradata[9 + sps_size]);
479 if (11 + sps_size + pps_size > codec->extradata_size)
481 avio_wb32(io, 0x00000001);
482 avio_write(io, &codec->extradata[11 + sps_size], pps_size);
486 track->codec_private_size = avio_close_dyn_buf(io, &track->codec_private);
490 static int handle_file(struct Tracks *tracks, const char *file, int split,
491 int ismf, const char *basename,
492 const char* output_prefix)
494 AVFormatContext *ctx = NULL;
495 int err = 0, i, orig_tracks = tracks->nb_tracks;
496 char errbuf[50], *ptr;
499 err = avformat_open_input(&ctx, file, NULL, NULL);
501 av_strerror(err, errbuf, sizeof(errbuf));
502 fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
506 err = avformat_find_stream_info(ctx, NULL);
508 av_strerror(err, errbuf, sizeof(errbuf));
509 fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
513 if (ctx->nb_streams < 1) {
514 fprintf(stderr, "No streams found in %s\n", file);
518 for (i = 0; i < ctx->nb_streams; i++) {
520 AVStream *st = ctx->streams[i];
522 if (st->codec->bit_rate == 0) {
523 fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
528 track = av_mallocz(sizeof(*track));
530 err = AVERROR(ENOMEM);
533 temp = av_realloc(tracks->tracks,
534 sizeof(*tracks->tracks) * (tracks->nb_tracks + 1));
537 err = AVERROR(ENOMEM);
540 tracks->tracks = temp;
541 tracks->tracks[tracks->nb_tracks] = track;
544 if ((ptr = strrchr(file, '/')))
545 track->name = ptr + 1;
547 track->bitrate = st->codec->bit_rate;
548 track->track_id = st->id;
549 track->timescale = st->time_base.den;
550 track->duration = st->duration;
551 track->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
552 track->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
554 if (!track->is_audio && !track->is_video) {
556 "Track %d in %s is neither video nor audio, skipping\n",
557 track->track_id, file);
558 av_freep(&tracks->tracks[tracks->nb_tracks]);
562 tracks->duration = FFMAX(tracks->duration,
563 av_rescale_rnd(track->duration, AV_TIME_BASE,
564 track->timescale, AV_ROUND_UP));
566 if (track->is_audio) {
567 if (tracks->audio_track < 0)
568 tracks->audio_track = tracks->nb_tracks;
569 tracks->nb_audio_tracks++;
570 track->channels = st->codec->channels;
571 track->sample_rate = st->codec->sample_rate;
572 if (st->codec->codec_id == AV_CODEC_ID_AAC) {
573 track->fourcc = "AACL";
575 track->blocksize = 4;
576 } else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) {
577 track->fourcc = "WMAP";
578 track->tag = st->codec->codec_tag;
579 track->blocksize = st->codec->block_align;
581 get_private_data(track, st->codec);
583 if (track->is_video) {
584 if (tracks->video_track < 0)
585 tracks->video_track = tracks->nb_tracks;
586 tracks->nb_video_tracks++;
587 track->width = st->codec->width;
588 track->height = st->codec->height;
589 if (st->codec->codec_id == AV_CODEC_ID_H264)
590 track->fourcc = "H264";
591 else if (st->codec->codec_id == AV_CODEC_ID_VC1)
592 track->fourcc = "WVC1";
593 get_video_private_data(track, st->codec);
599 avformat_close_input(&ctx);
601 err = read_mfra(tracks, orig_tracks, file, split, ismf, basename,
606 avformat_close_input(&ctx);
610 static void output_server_manifest(struct Tracks *tracks, const char *basename,
611 const char *output_prefix,
612 const char *path_prefix,
613 const char *ismc_prefix)
619 snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
620 out = fopen(filename, "w");
625 fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
626 fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
627 fprintf(out, "\t<head>\n");
628 fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
629 "content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
630 fprintf(out, "\t</head>\n");
631 fprintf(out, "\t<body>\n");
632 fprintf(out, "\t\t<switch>\n");
633 for (i = 0; i < tracks->nb_tracks; i++) {
634 struct Track *track = tracks->tracks[i];
635 const char *type = track->is_video ? "video" : "audio";
636 fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
637 type, path_prefix, track->name, track->bitrate);
638 fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
639 "valueType=\"data\" />\n", track->track_id);
640 fprintf(out, "\t\t\t</%s>\n", type);
642 fprintf(out, "\t\t</switch>\n");
643 fprintf(out, "\t</body>\n");
644 fprintf(out, "</smil>\n");
648 static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
653 struct Track *track = tracks->tracks[main];
654 int should_print_time_mismatch = 1;
656 for (i = 0; i < track->chunks; i++) {
657 for (j = main + 1; j < tracks->nb_tracks; j++) {
658 if (tracks->tracks[j]->is_audio == track->is_audio) {
659 if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) {
660 fprintf(stderr, "Mismatched duration of %s chunk %d in %s (%d) and %s (%d)\n",
661 type, i, track->name, main, tracks->tracks[j]->name, j);
662 should_print_time_mismatch = 1;
664 if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) {
665 if (should_print_time_mismatch)
666 fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n",
667 type, i, track->name, main, tracks->tracks[j]->name, j);
668 should_print_time_mismatch = 0;
672 fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" ",
673 i, track->offsets[i].duration);
674 if (pos != track->offsets[i].time) {
675 fprintf(out, "t=\"%"PRId64"\" ", track->offsets[i].time);
676 pos = track->offsets[i].time;
678 pos += track->offsets[i].duration;
679 fprintf(out, "/>\n");
683 static void output_client_manifest(struct Tracks *tracks, const char *basename,
684 const char *output_prefix, int split)
691 snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
693 snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
694 out = fopen(filename, "w");
699 fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
700 fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
701 "Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
702 if (tracks->video_track >= 0) {
703 struct Track *track = tracks->tracks[tracks->video_track];
704 struct Track *first_track = track;
707 "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
709 "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
710 tracks->nb_video_tracks, track->chunks);
711 for (i = 0; i < tracks->nb_tracks; i++) {
712 track = tracks->tracks[i];
713 if (!track->is_video)
716 "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
717 "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
718 "CodecPrivateData=\"",
719 index, track->bitrate, track->fourcc, track->width, track->height);
720 for (j = 0; j < track->codec_private_size; j++)
721 fprintf(out, "%02X", track->codec_private[j]);
722 fprintf(out, "\" />\n");
724 if (track->chunks != first_track->chunks)
725 fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n",
726 track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks);
728 print_track_chunks(out, tracks, tracks->video_track, "video");
729 fprintf(out, "\t</StreamIndex>\n");
731 if (tracks->audio_track >= 0) {
732 struct Track *track = tracks->tracks[tracks->audio_track];
733 struct Track *first_track = track;
736 "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
738 "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
739 tracks->nb_audio_tracks, track->chunks);
740 for (i = 0; i < tracks->nb_tracks; i++) {
741 track = tracks->tracks[i];
742 if (!track->is_audio)
745 "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
746 "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
747 "BitsPerSample=\"16\" PacketSize=\"%d\" "
748 "AudioTag=\"%d\" CodecPrivateData=\"",
749 index, track->bitrate, track->fourcc, track->sample_rate,
750 track->channels, track->blocksize, track->tag);
751 for (j = 0; j < track->codec_private_size; j++)
752 fprintf(out, "%02X", track->codec_private[j]);
753 fprintf(out, "\" />\n");
755 if (track->chunks != first_track->chunks)
756 fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
757 track->name, first_track->name);
759 print_track_chunks(out, tracks, tracks->audio_track, "audio");
760 fprintf(out, "\t</StreamIndex>\n");
762 fprintf(out, "</SmoothStreamingMedia>\n");
766 static void clean_tracks(struct Tracks *tracks)
769 for (i = 0; i < tracks->nb_tracks; i++) {
770 av_freep(&tracks->tracks[i]->codec_private);
771 av_freep(&tracks->tracks[i]->offsets);
772 av_freep(&tracks->tracks[i]);
774 av_freep(&tracks->tracks);
775 tracks->nb_tracks = 0;
778 int main(int argc, char **argv)
780 const char *basename = NULL;
781 const char *path_prefix = "", *ismc_prefix = "";
782 const char *output_prefix = "";
783 char output_prefix_buf[2048];
784 int split = 0, ismf = 0, i;
785 struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
789 for (i = 1; i < argc; i++) {
790 if (!strcmp(argv[i], "-n")) {
791 basename = argv[i + 1];
793 } else if (!strcmp(argv[i], "-path-prefix")) {
794 path_prefix = argv[i + 1];
796 } else if (!strcmp(argv[i], "-ismc-prefix")) {
797 ismc_prefix = argv[i + 1];
799 } else if (!strcmp(argv[i], "-output")) {
800 output_prefix = argv[i + 1];
802 if (output_prefix[strlen(output_prefix) - 1] != '/') {
803 snprintf(output_prefix_buf, sizeof(output_prefix_buf),
804 "%s/", output_prefix);
805 output_prefix = output_prefix_buf;
807 } else if (!strcmp(argv[i], "-split")) {
809 } else if (!strcmp(argv[i], "-ismf")) {
811 } else if (argv[i][0] == '-') {
812 return usage(argv[0], 1);
816 if (handle_file(&tracks, argv[i], split, ismf,
817 basename, output_prefix))
821 if (!tracks.nb_tracks || (!basename && !split))
822 return usage(argv[0], 1);
825 output_server_manifest(&tracks, basename, output_prefix,
826 path_prefix, ismc_prefix);
827 output_client_manifest(&tracks, basename, output_prefix, split);
829 clean_tracks(&tracks);