return update_size(pb, pos);
}
-static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track)
+static void get_pts_range(MOVMuxContext *mov, MOVTrack *track,
+ int64_t *start, int64_t *end)
{
if (track->tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd) {
// tmcd tracks gets track_duration set in mov_write_moov_tag from
// another track's duration, while the end_pts may be left at zero.
// Calculate the pts duration for that track instead.
- return av_rescale(calc_pts_duration(mov, &mov->tracks[track->src_track]),
- track->timescale, mov->tracks[track->src_track].timescale);
+ get_pts_range(mov, &mov->tracks[track->src_track], start, end);
+ *start = av_rescale(*start, track->timescale,
+ mov->tracks[track->src_track].timescale);
+ *end = av_rescale(*end, track->timescale,
+ mov->tracks[track->src_track].timescale);
+ return;
}
if (track->end_pts != AV_NOPTS_VALUE &&
track->start_dts != AV_NOPTS_VALUE &&
track->start_cts != AV_NOPTS_VALUE) {
- return track->end_pts - (track->start_dts + track->start_cts);
+ *start = track->start_dts + track->start_cts;
+ *end = track->end_pts;
+ return;
}
- return track->track_duration;
+ *start = 0;
+ *end = track->track_duration;
+}
+
+static int64_t calc_samples_pts_duration(MOVMuxContext *mov, MOVTrack *track)
+{
+ int64_t start, end;
+ get_pts_range(mov, track, &start, &end);
+ return end - start;
+}
+
+// Calculate the actual duration of the track, after edits.
+// If it starts with a pts < 0, that is removed by the edit list.
+// If it starts with a pts > 0, the edit list adds a delay before that.
+// Thus, with edit lists enabled, the post-edit output of the file is
+// starting with pts=0.
+static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track)
+{
+ int64_t start, end;
+ get_pts_range(mov, track, &start, &end);
+ if (mov->use_editlist != 0)
+ start = 0;
+ return end - start;
}
static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,
static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track)
{
- int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track),
+ int64_t duration = av_rescale_rnd(calc_samples_pts_duration(mov, track),
MOV_TIMESCALE, track->timescale,
AV_ROUND_UP);
int version = duration < INT32_MAX ? 0 : 1;
static int mov_create_timecode_track(AVFormatContext *s, int index, int src_index, AVTimecode tc)
{
- int ret;
MOVMuxContext *mov = s->priv_data;
MOVTrack *track = &mov->tracks[index];
AVStream *src_st = s->streams[src_index];
- AVPacket pkt = {.stream_index = index, .flags = AV_PKT_FLAG_KEY, .size = 4};
+ uint8_t data[4];
+ AVPacket pkt = { .data = data, .stream_index = index,
+ .flags = AV_PKT_FLAG_KEY, .size = 4 };
AVRational rate = find_fps(s, src_st);
/* tmcd track based on video stream */
track->st->avg_frame_rate = av_inv_q(rate);
/* the tmcd track just contains one packet with the frame number */
- pkt.data = av_malloc(pkt.size);
- if (!pkt.data)
- return AVERROR(ENOMEM);
AV_WB32(pkt.data, tc.start);
- ret = ff_mov_write_packet(s, &pkt);
- av_free(pkt.data);
- return ret;
+ return ff_mov_write_packet(s, &pkt);
}
/*
{ AV_CODEC_ID_VP9, MKTAG('v', 'p', '0', '9') },
{ AV_CODEC_ID_AV1, MKTAG('a', 'v', '0', '1') },
{ AV_CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') },
+ { AV_CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') },
{ AV_CODEC_ID_MP4ALS, MKTAG('m', 'p', '4', 'a') },
{ AV_CODEC_ID_MP3, MKTAG('m', 'p', '4', 'a') },
{ AV_CODEC_ID_MP2, MKTAG('m', 'p', '4', 'a') },