static int mov_write_header(AVFormatContext *s) { AVIOContext *pb = s->pb; MOVMuxContext *mov = s->priv_data; AVDictionaryEntry *t, *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0); int i, ret, hint_track = 0, tmcd_track = 0; mov->fc = s; /* Default mode == MP4 */ mov->mode = MODE_MP4; if (s->oformat) { if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP; else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2; else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV; else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP; else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD; else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM; else if (!strcmp("f4v", s->oformat->name)) mov->mode = MODE_F4V; } if (s->flags & AVFMT_FLAG_BITEXACT) mov->exact = 1; if (mov->flags & FF_MOV_FLAG_DELAY_MOOV) mov->flags |= FF_MOV_FLAG_EMPTY_MOOV; /* Set the FRAGMENT flag if any of the fragmentation methods are * enabled. */ if (mov->max_fragment_duration || mov->max_fragment_size || mov->flags & (FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_FRAG_KEYFRAME | FF_MOV_FLAG_FRAG_CUSTOM)) mov->flags |= FF_MOV_FLAG_FRAGMENT; /* Set other implicit flags immediately */ if (mov->mode == MODE_ISM) mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF | FF_MOV_FLAG_FRAGMENT; if (mov->flags & FF_MOV_FLAG_DASH) mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_DEFAULT_BASE_MOOF; if (mov->flags & FF_MOV_FLAG_FASTSTART) { mov->reserved_moov_size = -1; } if (mov->use_editlist < 0) { mov->use_editlist = 1; if (mov->flags & FF_MOV_FLAG_FRAGMENT && !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) { // If we can avoid needing an edit list by shifting the // tracks, prefer that over (trying to) write edit lists // in fragmented output. if (s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) mov->use_editlist = 0; } } if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && !(mov->flags & FF_MOV_FLAG_DELAY_MOOV) && mov->use_editlist) av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov without delay_moov\n"); if (!mov->use_editlist && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO) s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_ZERO; /* Clear the omit_tfhd_offset flag if default_base_moof is set; * if the latter is set that's enough and omit_tfhd_offset doesn't * add anything extra on top of that. */ if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) mov->flags &= ~FF_MOV_FLAG_OMIT_TFHD_OFFSET; if (mov->frag_interleave && mov->flags & (FF_MOV_FLAG_OMIT_TFHD_OFFSET | FF_MOV_FLAG_SEPARATE_MOOF)) { av_log(s, AV_LOG_ERROR, "Sample interleaving in fragments is mutually exclusive with " "omit_tfhd_offset and separate_moof\n"); return AVERROR(EINVAL); } /* Non-seekable output is ok if using fragmentation. If ism_lookahead * is enabled, we don't support non-seekable output at all. */ if (!s->pb->seekable && (!(mov->flags & FF_MOV_FLAG_FRAGMENT) || mov->ism_lookahead)) { av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n"); return AVERROR(EINVAL); } if (!(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) { if ((ret = mov_write_identification(pb, s)) < 0) return ret; } mov->nb_streams = s->nb_streams; if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters) mov->chapter_track = mov->nb_streams++; if (mov->flags & FF_MOV_FLAG_RTP_HINT) { /* Add hint tracks for each audio and video stream */ hint_track = mov->nb_streams; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { mov->nb_streams++; } } } if (mov->mode == MODE_MOV) { tmcd_track = mov->nb_streams; /* +1 tmcd track for each video stream with a timecode */ for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (global_tcr || av_dict_get(st->metadata, "timecode", NULL, 0))) mov->nb_meta_tmcd++; } /* check if there is already a tmcd track to remux */ if (mov->nb_meta_tmcd) { for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; if (st->codec->codec_tag == MKTAG('t','m','c','d')) { av_log(s, AV_LOG_WARNING, "You requested a copy of the original timecode track " "so timecode metadata are now ignored\n"); mov->nb_meta_tmcd = 0; } } } mov->nb_streams += mov->nb_meta_tmcd; } // Reserve an extra stream for chapters for the case where chapters // are written in the trailer mov->tracks = av_mallocz_array((mov->nb_streams + 1), sizeof(*mov->tracks)); if (!mov->tracks) return AVERROR(ENOMEM); for (i = 0; i < s->nb_streams; i++) { AVStream *st= s->streams[i]; MOVTrack *track= &mov->tracks[i]; AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0); track->st = st; track->enc = st->codec; track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV); if (track->language < 0) track->language = 0; track->mode = mov->mode; track->tag = mov_find_codec_tag(s, track); if (!track->tag) { av_log(s, AV_LOG_ERROR, "Could not find tag for codec %s in stream #%d, " "codec not currently supported in container\n", avcodec_get_name(st->codec->codec_id), i); ret = AVERROR(EINVAL); goto error; } /* If hinting of this track is enabled by a later hint track, * this is updated. */ track->hint_track = -1; track->start_dts = AV_NOPTS_VALUE; track->start_cts = AV_NOPTS_VALUE; track->end_pts = AV_NOPTS_VALUE; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') || track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') || track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) { if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) { av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n"); ret = AVERROR(EINVAL); goto error; } track->height = track->tag >> 24 == 'n' ? 486 : 576; } if (mov->video_track_timescale) { track->timescale = mov->video_track_timescale; } else { track->timescale = st->time_base.den; while(track->timescale < 10000) track->timescale *= 2; } if (st->codec->width > 65535 || st->codec->height > 65535) { av_log(s, AV_LOG_ERROR, "Resolution %dx%d too large for mov/mp4\n", st->codec->width, st->codec->height); ret = AVERROR(EINVAL); goto error; } if (track->mode == MODE_MOV && track->timescale > 100000) av_log(s, AV_LOG_WARNING, "WARNING codec timebase is very high. If duration is too long,\n" "file may not be playable by quicktime. Specify a shorter timebase\n" "or choose different container.\n"); } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { track->timescale = st->codec->sample_rate; if (!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) { av_log(s, AV_LOG_WARNING, "track %d: codec frame size is not set\n", i); track->audio_vbr = 1; }else if (st->codec->codec_id == AV_CODEC_ID_ADPCM_MS || st->codec->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV || st->codec->codec_id == AV_CODEC_ID_ILBC){ if (!st->codec->block_align) { av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i); ret = AVERROR(EINVAL); goto error; } track->sample_size = st->codec->block_align; }else if (st->codec->frame_size > 1){ /* assume compressed audio */ track->audio_vbr = 1; }else{ track->sample_size = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels; } if (st->codec->codec_id == AV_CODEC_ID_ILBC || st->codec->codec_id == AV_CODEC_ID_ADPCM_IMA_QT) { track->audio_vbr = 1; } if (track->mode != MODE_MOV && track->enc->codec_id == AV_CODEC_ID_MP3 && track->timescale < 16000) { if (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL) { av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not standard, to mux anyway set strict to -1\n", i, track->enc->sample_rate); ret = AVERROR(EINVAL); goto error; } else { av_log(s, AV_LOG_WARNING, "track %d: muxing mp3 at %dhz is not standard in MP4\n", i, track->enc->sample_rate); } } } else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { track->timescale = st->time_base.den; } else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) { track->timescale = st->time_base.den; } else { track->timescale = MOV_TIMESCALE; } if (!track->height) track->height = st->codec->height; /* The ism specific timescale isn't mandatory, but is assumed by * some tools, such as mp4split. */ if (mov->mode == MODE_ISM) track->timescale = 10000000; avpriv_set_pts_info(st, 64, 1, track->timescale); /* copy extradata if it exists */ if (st->codec->extradata_size) { if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) mov_create_dvd_sub_decoder_specific_info(track, st); else if (!TAG_IS_AVCI(track->tag) && st->codec->codec_id != AV_CODEC_ID_DNXHD) { track->vos_len = st->codec->extradata_size; track->vos_data = av_malloc(track->vos_len); if (!track->vos_data) { ret = AVERROR(ENOMEM); goto error; } memcpy(track->vos_data, st->codec->extradata, track->vos_len); } } } for (i = 0; i < s->nb_streams; i++) { int j; AVStream *st= s->streams[i]; MOVTrack *track= &mov->tracks[i]; if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || track->enc->channel_layout != AV_CH_LAYOUT_MONO) continue; for (j = 0; j < s->nb_streams; j++) { AVStream *stj= s->streams[j]; MOVTrack *trackj= &mov->tracks[j]; if (j == i) continue; if (stj->codec->codec_type != AVMEDIA_TYPE_AUDIO || trackj->enc->channel_layout != AV_CH_LAYOUT_MONO || trackj->language != track->language || trackj->tag != track->tag ) continue; track->multichannel_as_mono++; } } enable_tracks(s); if (mov->reserved_moov_size){ mov->reserved_moov_pos= avio_tell(pb); if (mov->reserved_moov_size > 0) avio_skip(pb, mov->reserved_moov_size); } if (mov->flags & FF_MOV_FLAG_FRAGMENT) { /* If no fragmentation options have been set, set a default. */ if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME | FF_MOV_FLAG_FRAG_CUSTOM)) && !mov->max_fragment_duration && !mov->max_fragment_size) mov->flags |= FF_MOV_FLAG_FRAG_KEYFRAME; } else { if (mov->flags & FF_MOV_FLAG_FASTSTART) mov->reserved_moov_pos = avio_tell(pb); mov_write_mdat_tag(pb, mov); } if (t = av_dict_get(s->metadata, "creation_time", NULL, 0)) mov->time = ff_iso8601_to_unix_time(t->value); if (mov->time) mov->time += 0x7C25B080; // 1970 based -> 1904 based if (mov->chapter_track) if ((ret = mov_create_chapter_track(s, mov->chapter_track)) < 0) goto error; if (mov->flags & FF_MOV_FLAG_RTP_HINT) { /* Initialize the hint tracks for each audio and video stream */ for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { if ((ret = ff_mov_init_hinting(s, hint_track, i)) < 0) goto error; hint_track++; } } } if (mov->nb_meta_tmcd) { /* Initialize the tmcd tracks */ for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; t = global_tcr; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { if (!t) t = av_dict_get(st->metadata, "timecode", NULL, 0); if (!t) continue; if ((ret = mov_create_timecode_track(s, tmcd_track, i, t->value)) < 0) goto error; tmcd_track++; } } } avio_flush(pb); if (mov->flags & FF_MOV_FLAG_ISML) mov_write_isml_manifest(pb, mov); if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) { if ((ret = mov_write_moov_tag(pb, mov, s)) < 0) return ret; mov->moov_written = 1; if (mov->flags & FF_MOV_FLAG_FASTSTART) mov->reserved_moov_pos = avio_tell(pb); } return 0; error: mov_free(s); return ret; }
static int mov_write_header(AVFormatContext *s) { AVIOContext *pb = s->pb; MOVMuxContext *mov = s->priv_data; AVDictionaryEntry *t, *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0); int i, ret, hint_track = 0, tmcd_track = 0; mov->fc = s;   mov->mode = MODE_MP4; if (s->oformat) { if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP; else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2; else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV; else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP; else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD; else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM; else if (!strcmp("f4v", s->oformat->name)) mov->mode = MODE_F4V; } if (s->flags & AVFMT_FLAG_BITEXACT) mov->exact = 1; if (mov->flags & FF_MOV_FLAG_DELAY_MOOV) mov->flags |= FF_MOV_FLAG_EMPTY_MOOV;   if (mov->max_fragment_duration || mov->max_fragment_size || mov->flags & (FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_FRAG_KEYFRAME | FF_MOV_FLAG_FRAG_CUSTOM)) mov->flags |= FF_MOV_FLAG_FRAGMENT;   if (mov->mode == MODE_ISM) mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF | FF_MOV_FLAG_FRAGMENT; if (mov->flags & FF_MOV_FLAG_DASH) mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_DEFAULT_BASE_MOOF; if (mov->flags & FF_MOV_FLAG_FASTSTART) { mov->reserved_moov_size = -1; } if (mov->use_editlist < 0) { mov->use_editlist = 1; if (mov->flags & FF_MOV_FLAG_FRAGMENT && !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {  