static const AVOption options[] = {
{ "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
- { "empty_moov", "Make the initial moov atom empty (not supported by QuickTime)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
+ { "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
+ { "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
+ { "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
{ "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
+ { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
+ { "fragment_index", "Fragment number of the next fragment", offsetof(MOVMuxContext, fragments), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL },
};
{
int tag = track->enc->codec_tag;
- if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
+ if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
(track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
track->enc->codec_id == AV_CODEC_ID_H263 ||
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "trak");
mov_write_tkhd_tag(pb, mov, track, st);
- if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS ||
- (track->entry && track->cluster[0].dts) ||
- is_clcp_track(track)) {
- mov_write_edts_tag(pb, mov, track); // PSP Movies require edts box
+ if (track->entry &&
+ (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS ||
+ track->cluster[0].dts || is_clcp_track(track))) {
+ if (mov->use_editlist)
+ mov_write_edts_tag(pb, mov, track); // PSP Movies require edts box
+ else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
+ av_log(mov->fc, AV_LOG_WARNING,
+ "Not writing any edit list even though one would have been required\n");
}
if (track->tref_tag)
mov_write_tref_tag(pb, track);
int audio_profile = mov->iods_audio_profile;
int video_profile = mov->iods_video_profile;
for (i = 0; i < mov->nb_streams; i++) {
- if (mov->tracks[i].entry > 0) {
+ if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
}
avio_wb32(pb, track->entry); /* sample count */
if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
- !(mov->flags & (FF_MOV_FLAG_SEPARATE_MOOF | FF_MOV_FLAG_DEFAULT_BASE_MOOF)) &&
+ !(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) &&
!mov->first_trun)
avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
else
return 0;
}
+static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
+ int size)
+{
+ int i;
+ for (i = 0; i < mov->nb_streams; i++) {
+ MOVTrack *track = &mov->tracks[i];
+ MOVFragmentInfo *info;
+ if ((tracks >= 0 && i != tracks) || !track->entry)
+ continue;
+ track->nb_frag_info++;
+ if (track->nb_frag_info >= track->frag_info_capacity) {
+ unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
+ if (av_reallocp_array(&track->frag_info,
+ new_capacity,
+ sizeof(*track->frag_info)))
+ return AVERROR(ENOMEM);
+ track->frag_info_capacity = new_capacity;
+ }
+ info = &track->frag_info[track->nb_frag_info - 1];
+ info->offset = avio_tell(pb);
+ info->size = size;
+ // Try to recreate the original pts for the first packet
+ // from the fields we have stored
+ info->time = track->start_dts + track->frag_start +
+ track->cluster[0].cts;
+ // If the pts is less than zero, we will have trimmed
+ // away parts of the media track using an edit list,
+ // and the corresponding start presentation time is zero.
+ if (info->time < 0)
+ info->time = 0;
+ info->duration = track->start_dts + track->track_duration -
+ track->cluster[0].dts;
+ info->tfrf_offset = 0;
+ mov_write_tfrf_tags(pb, mov, track);
+ }
+ return 0;
+}
+
static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
ffio_wfourcc(pb, "traf");
mov_write_tfhd_tag(pb, mov, track, moof_offset);
- mov_write_tfdt_tag(pb, track);
+ if (mov->mode != MODE_ISM)
+ mov_write_tfdt_tag(pb, track);
mov_write_trun_tag(pb, mov, track, moof_size);
if (mov->mode == MODE_ISM) {
mov_write_tfxd_tag(pb, track);
if (mov->ism_lookahead) {
int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
- track->tfrf_offset = avio_tell(pb);
+ if (track->nb_frag_info > 0) {
+ MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];
+ if (!info->tfrf_offset)
+ info->tfrf_offset = avio_tell(pb);
+ }
avio_wb32(pb, 8 + size);
ffio_wfourcc(pb, "free");
for (i = 0; i < size; i++)
return update_size(pb, pos);
}
-static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks)
+static int mov_write_sidx_tag(AVIOContext *pb,
+ MOVTrack *track, int ref_size, int total_sidx_size)
+{
+ int64_t pos = avio_tell(pb), offset_pos, end_pos;
+ int64_t presentation_time, duration, offset;
+ int starts_with_SAP, i, entries;
+
+ if (track->entry) {
+ entries = 1;
+ presentation_time = track->start_dts + track->frag_start +
+ track->cluster[0].cts;
+ duration = track->start_dts + track->track_duration -
+ track->cluster[0].dts;
+ starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;
+ } else {
+ entries = track->nb_frag_info;
+ presentation_time = track->frag_info[0].time;
+ }
+
+ // pts<0 should be cut away using edts
+ if (presentation_time < 0)
+ presentation_time = 0;
+
+ avio_wb32(pb, 0); /* size */
+ ffio_wfourcc(pb, "sidx");
+ avio_w8(pb, 1); /* version */
+ avio_wb24(pb, 0);
+ avio_wb32(pb, track->track_id); /* reference_ID */
+ avio_wb32(pb, track->timescale); /* timescale */
+ avio_wb64(pb, presentation_time); /* earliest_presentation_time */
+ offset_pos = avio_tell(pb);
+ avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
+ avio_wb16(pb, 0); /* reserved */
+
+ avio_wb16(pb, entries); /* reference_count */
+ for (i = 0; i < entries; i++) {
+ if (!track->entry) {
+ if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
+ av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
+ }
+ duration = track->frag_info[i].duration;
+ ref_size = track->frag_info[i].size;
+ starts_with_SAP = 1;
+ }
+ avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
+ avio_wb32(pb, duration); /* subsegment_duration */
+ avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
+ }
+
+ end_pos = avio_tell(pb);
+ offset = pos + total_sidx_size - end_pos;
+ avio_seek(pb, offset_pos, SEEK_SET);
+ avio_wb64(pb, offset);
+ avio_seek(pb, end_pos, SEEK_SET);
+ return update_size(pb, pos);
+}
+
+static int mov_write_sidx_tags(AVIOContext *pb, MOVMuxContext *mov,
+ int tracks, int ref_size)
+{
+ int i, round, ret;
+ AVIOContext *avio_buf;
+ int total_size = 0;
+ for (round = 0; round < 2; round++) {
+ // First run one round to calculate the total size of all
+ // sidx atoms.
+ // This would be much simpler if we'd only write one sidx
+ // atom, for the first track in the moof.
+ if (round == 0) {
+ if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
+ return ret;
+ } else {
+ avio_buf = pb;
+ }
+ for (i = 0; i < mov->nb_streams; i++) {
+ MOVTrack *track = &mov->tracks[i];
+ if (tracks >= 0 && i != tracks)
+ continue;
+ // When writing a sidx for the full file, entry is 0, but
+ // we want to include all tracks. ref_size is 0 in this case,
+ // since we read it from frag_info instead.
+ if (!track->entry && ref_size > 0)
+ continue;
+ total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
+ total_size);
+ }
+ if (round == 0)
+ total_size = ffio_close_null_buf(avio_buf);
+ }
+ return 0;
+}
+
+static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
+ int64_t mdat_size)
{
AVIOContext *avio_buf;
int ret, moof_size;
return ret;
mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
moof_size = ffio_close_null_buf(avio_buf);
+
+ if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_FASTSTART))
+ mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);
+
+ if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
+ return ret;
+
return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
}
avio_wb32(pb, track->nb_frag_info);
for (i = 0; i < track->nb_frag_info; i++) {
avio_wb64(pb, track->frag_info[i].time);
- avio_wb64(pb, track->frag_info[i].offset);
+ avio_wb64(pb, track->frag_info[i].offset + track->data_offset);
avio_w8(pb, 1); /* traf number */
avio_w8(pb, 1); /* trun number */
avio_w8(pb, 1); /* sample number */
ffio_wfourcc(pb, "qt ");
else if (mov->mode == MODE_ISM) {
ffio_wfourcc(pb, "piff");
- if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF))
- ffio_wfourcc(pb, "iso2");
} else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {
ffio_wfourcc(pb, "isom");
ffio_wfourcc(pb, "iso2");
// We add tfdt atoms when fragmenting, signal this with the iso6 compatible
// brand. This is compatible with users that don't understand tfdt.
- if (mov->flags & FF_MOV_FLAG_FRAGMENT)
+ if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)
ffio_wfourcc(pb, "iso6");
if (mov->mode == MODE_3GP)
ffio_wfourcc(pb, "MSNV");
else if (mov->mode == MODE_MP4)
ffio_wfourcc(pb, "mp41");
+
+ if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_FASTSTART)
+ ffio_wfourcc(pb, "dash");
+
return update_size(pb, pos);
}
}
if (write_moof) {
- MOVFragmentInfo *info;
avio_flush(s->pb);
- track->nb_frag_info++;
- if (track->nb_frag_info >= track->frag_info_capacity) {
- unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
- if (av_reallocp_array(&track->frag_info,
- new_capacity,
- sizeof(*track->frag_info)))
- return AVERROR(ENOMEM);
- track->frag_info_capacity = new_capacity;
- }
- info = &track->frag_info[track->nb_frag_info - 1];
- info->offset = avio_tell(s->pb);
- info->time = track->frag_start;
- info->duration = duration;
- mov_write_tfrf_tags(s->pb, mov, track);
-
- mov_write_moof_tag(s->pb, mov, moof_tracks);
- info->tfrf_offset = track->tfrf_offset;
+
+ mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);
mov->fragments++;
avio_wb32(s->pb, mdat_size + 8);
MOVTrack *trk = &mov->tracks[pkt->stream_index];
AVCodecContext *enc = trk->enc;
unsigned int samples_in_chunk = 0;
- int size = pkt->size;
+ int size = pkt->size, ret = 0;
uint8_t *reformatted_data = NULL;
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
/* copy frame to create needed atoms */
trk->vos_len = size;
trk->vos_data = av_malloc(size);
- if (!trk->vos_data)
- return AVERROR(ENOMEM);
+ if (!trk->vos_data) {
+ ret = AVERROR(ENOMEM);
+ goto err;
+ }
memcpy(trk->vos_data, pkt->data, size);
}
if (trk->entry >= trk->cluster_capacity) {
unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
if (av_reallocp_array(&trk->cluster, new_capacity,
- sizeof(*trk->cluster)))
- return AVERROR(ENOMEM);
+ sizeof(*trk->cluster))) {
+ ret = AVERROR(ENOMEM);
+ goto err;
+ }
trk->cluster_capacity = new_capacity;
}
trk->cluster[trk->entry].entries = samples_in_chunk;
trk->cluster[trk->entry].dts = pkt->dts;
if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
- /* First packet of a new fragment. We already wrote the duration
- * of the last packet of the previous fragment based on track_duration,
- * which might not exactly match our dts. Therefore adjust the dts
- * of this packet to be what the previous packets duration implies. */
- trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
+ if (!trk->frag_discont) {
+ /* First packet of a new fragment. We already wrote the duration
+ * of the last packet of the previous fragment based on track_duration,
+ * which might not exactly match our dts. Therefore adjust the dts
+ * of this packet to be what the previous packets duration implies. */
+ trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
+ } else {
+ /* New fragment, but discontinuous from previous fragments.
+ * Pretend the duration sum of the earlier fragments is
+ * pkt->dts - trk->start_dts. */
+ trk->frag_start = pkt->dts - trk->start_dts;
+ trk->frag_discont = 0;
+ }
+ }
+ if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
+ s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
+ /* Not using edit lists and shifting the first track to start from zero.
+ * If the other streams start from a later timestamp, we won't be able
+ * to signal the difference in starting time without an edit list.
+ * Thus move the timestamp for this first sample to 0, increasing
+ * its duration instead. */
+ trk->cluster[trk->entry].dts = trk->start_dts = 0;
}
if (trk->start_dts == AV_NOPTS_VALUE) {
trk->start_dts = pkt->dts;
- if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
+ if (trk->frag_discont) {
+ /* Pretend the whole stream started at dts=0, with earlier framgents
+ * already written, with a duration summing up to pkt->dts. */
+ trk->frag_start = pkt->dts;
+ trk->start_dts = 0;
+ trk->frag_discont = 0;
+ } else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
av_log(s, AV_LOG_WARNING,
"Track %d starts with a nonzero dts %"PRId64". This "
"currently isn't handled correctly in combination with "
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
reformatted_data, size);
+
+err:
av_free(reformatted_data);
- return 0;
+ return ret;
}
static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
if (!pkt->size)
return 0; /* Discard 0 sized packets */
+ if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
+ int i;
+ for (i = 0; i < s->nb_streams; i++)
+ mov->tracks[i].frag_discont = 1;
+ mov->flags &= ~FF_MOV_FLAG_FRAG_DISCONT;
+ }
+
if (trk->entry)
frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
s->streams[pkt->stream_index]->time_base,
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;
- /* faststart: moov at the beginning of the file, if supported */
- if (mov->flags & FF_MOV_FLAG_FASTSTART) {
+ if (mov->use_editlist < 0) {
+ mov->use_editlist = 1;
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
- av_log(s, AV_LOG_WARNING, "The faststart flag is incompatible "
- "with fragmentation, disabling faststart\n");
- mov->flags &= ~FF_MOV_FLAG_FASTSTART;
+ // 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->use_editlist)
+ av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_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;
/* Non-seekable output is ok if using fragmentation. If ism_lookahead
* is enabled, we don't support non-seekable output at all. */
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
mov_write_moov_tag(pb, mov, s);
mov->fragments++;
+ if (mov->flags & FF_MOV_FLAG_FASTSTART)
+ mov->reserved_moov_pos = avio_tell(pb);
}
return 0;
return ffio_close_null_buf(moov_buf);
}
+static int get_sidx_size(AVFormatContext *s)
+{
+ int ret;
+ AVIOContext *buf;
+ MOVMuxContext *mov = s->priv_data;
+
+ if ((ret = ffio_open_null_buf(&buf)) < 0)
+ return ret;
+ mov_write_sidx_tags(buf, mov, -1, 0);
+ return ffio_close_null_buf(buf);
+}
+
/*
* This function gets the moov size if moved to the top of the file: the chunk
* offset table can switch between stco (32-bit entries) to co64 (64-bit
return moov_size2;
}
+static int compute_sidx_size(AVFormatContext *s)
+{
+ int i, sidx_size;
+ MOVMuxContext *mov = s->priv_data;
+
+ sidx_size = get_sidx_size(s);
+ if (sidx_size < 0)
+ return sidx_size;
+
+ for (i = 0; i < mov->nb_streams; i++)
+ mov->tracks[i].data_offset += sidx_size;
+
+ return sidx_size;
+}
+
static int shift_data(AVFormatContext *s)
{
int ret = 0, moov_size;
int read_size[2];
AVIOContext *read_pb;
- moov_size = compute_moov_size(s);
+ if (mov->flags & FF_MOV_FLAG_FRAGMENT)
+ moov_size = compute_sidx_size(s);
+ else
+ moov_size = compute_moov_size(s);
if (moov_size < 0)
return moov_size;
}
} else {
mov_flush_fragment(s);
- mov_write_mfra_tag(pb, mov);
+ for (i = 0; i < mov->nb_streams; i++)
+ mov->tracks[i].data_offset = 0;
+ if (mov->flags & FF_MOV_FLAG_FASTSTART) {
+ av_log(s, AV_LOG_INFO, "Starting second pass: inserting sidx atoms\n");
+ res = shift_data(s);
+ if (res == 0) {
+ int64_t end = avio_tell(pb);
+ avio_seek(pb, mov->reserved_moov_pos, SEEK_SET);
+ mov_write_sidx_tags(pb, mov, -1, 0);
+ avio_seek(pb, end, SEEK_SET);
+ mov_write_mfra_tag(pb, mov);
+ }
+ } else {
+ mov_write_mfra_tag(pb, mov);
+ }
}
for (i = 0; i < mov->nb_streams; i++) {
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