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movenc: Add a separate start_pts 

This fixes calculation of trackDuration if the MOVIentry array
is cleared. This is required by the fragmentation support in the
next patch.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-01-07 01:32:53 +02:00
parent c3af52fa8b
commit 6ca3856894
2 changed files with 6 additions and 2 deletions
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7
libavformat/movenc.c
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@ -987,7 +987,7 @@ static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
stts_entries = av_malloc(track->entry * sizeof(*stts_entries)); /* worst case */
for (i=0; i<track->entry; i++) {
int64_t duration = i + 1 == track->entry ?
track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */
track->trackDuration - track->cluster[i].dts + track->start_dts : /* readjusting */
track->cluster[i+1].dts - track->cluster[i].dts;
if (i && duration == stts_entries[entries].duration) {
stts_entries[entries].count++; /* compress */
@ -2104,7 +2104,9 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
trk->cluster[trk->entry].size = size;
trk->cluster[trk->entry].entries = samplesInChunk;
trk->cluster[trk->entry].dts = pkt->dts;
trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;
if (trk->start_dts == AV_NOPTS_VALUE)
trk->start_dts = pkt->dts;
trk->trackDuration = pkt->dts - trk->start_dts + pkt->duration;
if (pkt->pts == AV_NOPTS_VALUE) {
av_log(s, AV_LOG_WARNING, "pts has no value\n");
@ -2253,6 +2255,7 @@ static int mov_write_header(AVFormatContext *s)
/* 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;
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') ||

1
libavformat/movenc.h
View File

@ -89,6 +89,7 @@ typedef struct MOVIndex {
int height; ///< active picture (w/o VBI) height for D-10/IMX
uint32_t tref_tag;
int tref_id; ///< trackID of the referenced track
int64_t start_dts;
int hint_track; ///< the track that hints this track, -1 if no hint track is set
int src_track; ///< the track that this hint track describes