#include "libavutil/random_seed.h"
#include "libavutil/rational.h"
#include "libavutil/samplefmt.h"
-#include "libavutil/sha.h"
#include "libavutil/stereo3d.h"
#include "libavcodec/xiph.h"
typedef struct mkv_cuepoint {
uint64_t pts;
int stream_idx;
- int tracknum;
int64_t cluster_pos; ///< offset of the cluster containing the block relative to the segment
int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
int64_t duration; ///< duration of the block according to time base
typedef struct mkv_track {
int write_dts;
int has_cue;
+ uint64_t uid;
+ unsigned track_num;
int sample_rate;
int64_t sample_rate_offset;
int64_t last_timestamp;
int64_t ts_offset;
} mkv_track;
-typedef struct mkv_attachment {
- int stream_idx;
- uint32_t fileuid;
-} mkv_attachment;
-
-typedef struct mkv_attachments {
- mkv_attachment *entries;
- int num_entries;
-} mkv_attachments;
-
#define MODE_MATROSKAv2 0x01
#define MODE_WEBM 0x02
mkv_seekhead seekhead;
mkv_cues cues;
mkv_track *tracks;
- mkv_attachments *attachments;
AVPacket cur_audio_pkt;
int wrote_chapters;
int allow_raw_vfw;
+
+ uint32_t segment_uid[4];
} MatroskaMuxContext;
/** 2 bytes * 7 for EBML IDs, 7 1-byte EBML lengths, 6 1-byte uint,
avio_w8(pb, (uint8_t)(num >> i * 8));
}
+/**
+ * Write a (random) UID with fixed size to make the output more deterministic
+ */
+static void put_ebml_uid(AVIOContext *pb, uint32_t elementid, uint64_t uid)
+{
+ put_ebml_id(pb, elementid);
+ put_ebml_num(pb, 8, 0);
+ avio_wb64(pb, uid);
+}
+
static void put_ebml_uint(AVIOContext *pb, uint32_t elementid, uint64_t val)
{
int i, bytes = 1;
ffio_free_dyn_buf(&mkv->tags_bc);
av_freep(&mkv->cues.entries);
- if (mkv->attachments) {
- av_freep(&mkv->attachments->entries);
- av_freep(&mkv->attachments);
- }
av_freep(&mkv->tracks);
}
return 0;
}
-static int mkv_add_cuepoint(MatroskaMuxContext *mkv, int stream, int tracknum, int64_t ts,
+static int mkv_add_cuepoint(MatroskaMuxContext *mkv, int stream, int64_t ts,
int64_t cluster_pos, int64_t relative_pos, int64_t duration)
{
mkv_cues *cues = &mkv->cues;
cues->entries[cues->num_entries].pts = ts;
cues->entries[cues->num_entries].stream_idx = stream;
- cues->entries[cues->num_entries].tracknum = tracknum;
cues->entries[cues->num_entries].cluster_pos = cluster_pos - mkv->segment_offset;
cues->entries[cues->num_entries].relative_pos = relative_pos;
cues->entries[cues->num_entries++].duration = duration;
continue;
tracks[idx].has_cue = 1;
track_positions = start_ebml_master(cuepoint, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE);
- put_ebml_uint(cuepoint, MATROSKA_ID_CUETRACK , entry->tracknum );
+ put_ebml_uint(cuepoint, MATROSKA_ID_CUETRACK , tracks[idx].track_num);
put_ebml_uint(cuepoint, MATROSKA_ID_CUECLUSTERPOSITION , entry->cluster_pos);
put_ebml_uint(cuepoint, MATROSKA_ID_CUERELATIVEPOSITION, entry->relative_pos);
if (entry->duration != -1)
}
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
- int i, AVIOContext *pb, int default_stream_exists)
+ AVStream *st, mkv_track *track, AVIOContext *pb,
+ int default_stream_exists)
{
- AVStream *st = s->streams[i];
AVCodecParameters *par = st->codecpar;
- ebml_master subinfo, track;
+ ebml_master subinfo, track_master;
int native_id = 0;
int qt_id = 0;
int bit_depth;
return ret;
}
- track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
- put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER,
- mkv->is_dash ? mkv->dash_track_number : i + 1);
- put_ebml_uint (pb, MATROSKA_ID_TRACKUID,
- mkv->is_dash ? mkv->dash_track_number : i + 1);
+ track_master = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
+ put_ebml_uint(pb, MATROSKA_ID_TRACKNUMBER, track->track_num);
+ put_ebml_uid (pb, MATROSKA_ID_TRACKUID, track->uid);
put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
else if (!native_id) {
// if there is no mkv-specific codec ID, use VFW mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
- mkv->tracks[i].write_dts = 1;
+ track->write_dts = 1;
s->internal->avoid_negative_ts_use_pts = 0;
}
av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
return AVERROR(EINVAL);
}
-// mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding,
-// (AVRational){ 1, par->sample_rate },
-// st->time_base);
+// track->ts_offset = av_rescale_q(par->initial_padding,
+// (AVRational){ 1, par->sample_rate },
+// st->time_base);
put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
}
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , par->channels);
- mkv->tracks[i].sample_rate_offset = avio_tell(pb);
+ track->sample_rate_offset = avio_tell(pb);
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
if (output_sample_rate)
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
}
if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
- mkv->tracks[i].codecpriv_offset = avio_tell(pb);
+ track->codecpriv_offset = avio_tell(pb);
ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
if (ret < 0)
return ret;
}
- end_ebml_master(pb, track);
+ end_ebml_master(pb, track_master);
return 0;
}
default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
}
for (i = 0; i < s->nb_streams; i++) {
- ret = mkv_write_track(s, mkv, i, mkv->tracks_bc, default_stream_exists);
+ AVStream *st = s->streams[i];
+ ret = mkv_write_track(s, mkv, st, &mkv->tracks[i],
+ mkv->tracks_bc, default_stream_exists);
if (ret < 0)
return ret;
}
editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
if (mkv->mode != MODE_WEBM) {
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGDEFAULT, 1);
- put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGHIDDEN , 0);
}
for (i = 0; i < s->nb_chapters; i++) {
ebml_master chapteratom, chapterdisplay;
(uint32_t)c->id + (uint64_t)mkv->chapter_id_offset);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
- if (mkv->mode != MODE_WEBM) {
- put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0);
- put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGENABLED, 1);
- }
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
chapterdisplay = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERDISPLAY, 0);
put_ebml_string(dyn_cp, MATROSKA_ID_CHAPSTRING, t->value);
*tag = start_ebml_master(pb, MATROSKA_ID_TAG, 0);
targets = start_ebml_master(pb, MATROSKA_ID_TAGTARGETS, 0);
if (elementid)
- put_ebml_uint(pb, elementid, uid);
+ put_ebml_uid(pb, elementid, uid);
end_ebml_master(pb, targets);
return 0;
}
}
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, uint32_t elementid,
- uint64_t uid)
+ uint64_t uid, ebml_master *tag)
{
MatroskaMuxContext *mkv = s->priv_data;
- ebml_master tag;
+ ebml_master tag2;
int ret;
AVDictionaryEntry *t = NULL;
- ret = mkv_write_tag_targets(s, elementid, uid, &tag);
+ ret = mkv_write_tag_targets(s, elementid, uid, tag ? tag : &tag2);
if (ret < 0)
return ret;
}
}
- end_ebml_master(mkv->tags_bc, tag);
+ if (!tag)
+ end_ebml_master(mkv->tags_bc, tag2);
+
return 0;
}
static int mkv_write_tags(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
+ ebml_master tag, *tagp;
int i, ret;
ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL);
if (mkv_check_tag(s->metadata, 0)) {
- ret = mkv_write_tag(s, s->metadata, 0, 0);
+ ret = mkv_write_tag(s, s->metadata, 0, 0, NULL);
if (ret < 0) return ret;
}
+ tagp = (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live ? &tag : NULL;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
+ mkv_track *track = &mkv->tracks[i];
if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT)
continue;
- if (!mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID))
+ if (!tagp && !mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID))
continue;
- ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1);
+ ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID,
+ track->uid, tagp);
if (ret < 0) return ret;
- }
-
- if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
- for (i = 0; i < s->nb_streams; i++) {
- AVIOContext *pb;
- AVStream *st = s->streams[i];
- ebml_master tag_target;
- ebml_master tag;
-
- if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT)
- continue;
- ret = mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID,
- i + 1, &tag_target);
- if (ret < 0)
- return ret;
- pb = mkv->tags_bc;
+ if (tagp) {
+ AVIOContext *pb = mkv->tags_bc;
+ ebml_master simpletag;
- tag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0);
+ simpletag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0);
put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION");
mkv->tracks[i].duration_offset = avio_tell(pb);
// Reserve space to write duration as a 20-byte string.
// 2 (ebml id) + 1 (data size) + 20 (data)
put_ebml_void(pb, 23);
+ end_ebml_master(pb, simpletag);
end_ebml_master(pb, tag);
- end_ebml_master(pb, tag_target);
}
}
continue;
ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID,
- (uint32_t)ch->id + (uint64_t)mkv->chapter_id_offset);
+ (uint32_t)ch->id + (uint64_t)mkv->chapter_id_offset,
+ NULL);
if (ret < 0)
return ret;
}
}
if (mkv->have_attachments && mkv->mode != MODE_WEBM) {
- for (i = 0; i < mkv->attachments->num_entries; i++) {
- mkv_attachment *attachment = &mkv->attachments->entries[i];
- AVStream *st = s->streams[attachment->stream_idx];
+ for (i = 0; i < s->nb_streams; i++) {
+ mkv_track *track = &mkv->tracks[i];
+ AVStream *st = s->streams[i];
+
+ if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT)
+ continue;
if (!mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID))
continue;
- ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID, attachment->fileuid);
+ ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID,
+ track->uid, NULL);
if (ret < 0)
return ret;
}
{
MatroskaMuxContext *mkv = s->priv_data;
AVIOContext *dyn_cp = NULL, *pb = s->pb;
- AVLFG c;
int i, ret;
if (!mkv->have_attachments)
return 0;
- mkv->attachments = av_mallocz(sizeof(*mkv->attachments));
- if (!mkv->attachments)
- return AVERROR(ENOMEM);
-
- av_lfg_init(&c, av_get_random_seed());
-
mkv_add_seekhead_entry(mkv, MATROSKA_ID_ATTACHMENTS, avio_tell(pb));
ret = start_ebml_master_crc32(&dyn_cp, mkv);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
+ mkv_track *track = &mkv->tracks[i];
ebml_master attached_file;
- mkv_attachment *attachment = mkv->attachments->entries;
AVDictionaryEntry *t;
const char *mimetype = NULL;
- uint32_t fileuid;
if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT)
continue;
- attachment = av_realloc_array(attachment, mkv->attachments->num_entries + 1, sizeof(mkv_attachment));
- if (!attachment)
- return AVERROR(ENOMEM);
- mkv->attachments->entries = attachment;
-
attached_file = start_ebml_master(dyn_cp, MATROSKA_ID_ATTACHEDFILE, 0);
if (t = av_dict_get(st->metadata, "title", NULL, 0))
if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
mimetype = t->value;
else if (st->codecpar->codec_id != AV_CODEC_ID_NONE ) {
- int i;
- for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
- if (ff_mkv_mime_tags[i].id == st->codecpar->codec_id) {
- mimetype = ff_mkv_mime_tags[i].str;
- break;
- }
- for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
- if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) {
- mimetype = ff_mkv_image_mime_tags[i].str;
- break;
- }
+ const AVCodecDescriptor *desc = avcodec_descriptor_get(st->codecpar->codec_id);
+ if (desc && desc->mime_types) {
+ mimetype = desc->mime_types[0];
+ } else if (st->codecpar->codec_id = AV_CODEC_ID_TEXT)
+ mimetype = "text/plain";
}
if (!mimetype) {
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
return AVERROR(EINVAL);
}
- if (s->flags & AVFMT_FLAG_BITEXACT) {
- struct AVSHA *sha = av_sha_alloc();
- uint8_t digest[20];
- if (!sha)
- return AVERROR(ENOMEM);
- av_sha_init(sha, 160);
- av_sha_update(sha, st->codecpar->extradata, st->codecpar->extradata_size);
- av_sha_final(sha, digest);
- av_free(sha);
- fileuid = AV_RL32(digest);
- } else {
- fileuid = av_lfg_get(&c);
- }
- av_log(s, AV_LOG_VERBOSE, "Using %.8"PRIx32" for attachment %d\n",
- fileuid, mkv->attachments->num_entries);
-
put_ebml_string(dyn_cp, MATROSKA_ID_FILEMIMETYPE, mimetype);
put_ebml_binary(dyn_cp, MATROSKA_ID_FILEDATA, st->codecpar->extradata, st->codecpar->extradata_size);
- put_ebml_uint(dyn_cp, MATROSKA_ID_FILEUID, fileuid);
+ put_ebml_uid(dyn_cp, MATROSKA_ID_FILEUID, track->uid);
end_ebml_master(dyn_cp, attached_file);
-
- mkv->attachments->entries[mkv->attachments->num_entries].stream_idx = i;
- mkv->attachments->entries[mkv->attachments->num_entries++].fileuid = fileuid;
}
end_ebml_master_crc32(pb, &dyn_cp, mkv, MATROSKA_ID_ATTACHMENTS, 0, 0);
version = 4;
}
- mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
- if (!mkv->tracks) {
- return AVERROR(ENOMEM);
- }
ebml_header = start_ebml_master(pb, EBML_ID_HEADER, MAX_EBML_HEADER_SIZE);
put_ebml_uint (pb, EBML_ID_EBMLVERSION , 1);
put_ebml_uint (pb, EBML_ID_EBMLREADVERSION , 1);
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT);
if (mkv->mode != MODE_WEBM) {
- uint32_t segment_uid[4];
- AVLFG lfg;
-
- av_lfg_init(&lfg, av_get_random_seed());
-
- for (i = 0; i < 4; i++)
- segment_uid[i] = av_lfg_get(&lfg);
-
- put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
+ put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, mkv->segment_uid, 16);
}
} else {
const char *ident = "Lavf";
int64_t ts = track->write_dts ? pkt->dts : pkt->pts;
uint64_t additional_id;
int64_t discard_padding = 0;
- uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1));
+ unsigned track_number = track->track_num;
ebml_master block_group, block_additions, block_more;
ts += track->ts_offset;
av_log(s, AV_LOG_DEBUG,
"Writing block of size %d with pts %" PRId64 ", dts %" PRId64 ", "
"duration %" PRId64 " at relative offset %" PRId64 " in cluster "
- "at offset %" PRId64 ". TrackNumber %d, keyframe %d\n",
+ "at offset %" PRId64 ". TrackNumber %u, keyframe %d\n",
pkt->size, pkt->pts, pkt->dts, pkt->duration, avio_tell(pb),
mkv->cluster_pos, track_number, keyframe != 0);
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
{
MatroskaMuxContext *mkv = s->priv_data;
+ mkv_track *track = &mkv->tracks[pkt->stream_index];
ebml_master blockgroup;
int id_size, settings_size, size;
uint8_t *id, *settings;
av_log(s, AV_LOG_DEBUG,
"Writing block of size %d with pts %" PRId64 ", dts %" PRId64 ", "
"duration %" PRId64 " at relative offset %" PRId64 " in cluster "
- "at offset %" PRId64 ". TrackNumber %d, keyframe %d\n",
+ "at offset %" PRId64 ". TrackNumber %u, keyframe %d\n",
size, pkt->pts, pkt->dts, pkt->duration, avio_tell(pb),
- mkv->cluster_pos, pkt->stream_index + 1, 1);
+ mkv->cluster_pos, track->track_num, 1);
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size));
put_ebml_id(pb, MATROSKA_ID_BLOCK);
put_ebml_num(pb, size + 4, 0);
- avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
+ avio_w8(pb, 0x80 | track->track_num); // this assumes track_num is less than 126
avio_wb16(pb, ts - mkv->cluster_pts);
avio_w8(pb, flags);
avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
int ret;
int64_t ts = track->write_dts ? pkt->dts : pkt->pts;
int64_t relative_packet_pos;
- int tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
if (ts == AV_NOPTS_VALUE) {
av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
if (ret < 0)
return ret;
if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) {
- ret = mkv_add_cuepoint(mkv, pkt->stream_index, tracknum, ts,
+ ret = mkv_add_cuepoint(mkv, pkt->stream_index, ts,
mkv->cluster_pos, relative_packet_pos, -1);
if (ret < 0) return ret;
}
}
if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
- ret = mkv_add_cuepoint(mkv, pkt->stream_index, tracknum, ts,
+ ret = mkv_add_cuepoint(mkv, pkt->stream_index, ts,
mkv->cluster_pos, relative_packet_pos, duration);
if (ret < 0)
return ret;
return 0;
}
+static uint64_t mkv_get_uid(const mkv_track *tracks, int i, AVLFG *c)
+{
+ while (1) {
+ uint64_t uid;
+ int k;
+ uid = (uint64_t)av_lfg_get(c) << 32;
+ uid |= av_lfg_get(c);
+ if (!uid)
+ continue;
+ for (k = 0; k < i; k++) {
+ if (tracks[k].uid == uid)
+ break;
+ }
+ if (k == i)
+ return uid;
+ }
+}
+
static int mkv_init(struct AVFormatContext *s)
{
+ MatroskaMuxContext *mkv = s->priv_data;
+ AVLFG c;
+ unsigned nb_tracks = 0;
int i;
- if (s->nb_streams > MAX_TRACKS) {
- av_log(s, AV_LOG_ERROR,
- "At most %d streams are supported for muxing in Matroska\n",
- MAX_TRACKS);
- return AVERROR(EINVAL);
- }
-
for (i = 0; i < s->nb_streams; i++) {
if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 ||
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_COOK ||
s->internal->avoid_negative_ts_use_pts = 1;
}
+ mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
+ if (!mkv->tracks) {
+ return AVERROR(ENOMEM);
+ }
+
+ if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
+ av_lfg_init(&c, av_get_random_seed());
+
+ // Calculate the SegmentUID now in order not to waste our random seed.
+ for (i = 0; i < 4; i++)
+ mkv->segment_uid[i] = av_lfg_get(&c);
+ }
+
for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ mkv_track *track = &mkv->tracks[i];
+
+ if (s->flags & AVFMT_FLAG_BITEXACT) {
+ track->uid = i + 1;
+ } else {
+ track->uid = mkv_get_uid(mkv->tracks, i, &c);
+ }
+
// ms precision is the de-facto standard timescale for mkv files
avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
+
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT)
+ continue;
+
+ nb_tracks++;
+ track->track_num = mkv->is_dash ? mkv->dash_track_number : nb_tracks;
+ }
+
+ if (nb_tracks > MAX_TRACKS) {
+ av_log(s, AV_LOG_ERROR,
+ "%u > "AV_STRINGIFY(MAX_TRACKS)" tracks (excluding attachments)"
+ " not supported for muxing in Matroska\n", nb_tracks);
+ return AVERROR(EINVAL);
}
return 0;
projects / ffmpeg / blobdiff