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If a stream has no start time, but the first packet has a 'pts', use that 

pts to set the start_time.
patch by Neil Brown: [neilb suse de]
original thread: [FFmpeg-devel] [patch 3/3] Make timing calculations less
dependant on start_time being defined.
date: 08/16/2007 08:27 AM

Originally committed as revision 10285 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Neil Brown 2007-09-03 07:56:26 +00:00 committed by Benoit Fouet
parent 3f19004e46
commit 9fcbcca60a
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libavformat/utils.c
View File

@ -590,7 +590,9 @@ static int is_intra_only(AVCodecContext *enc){
return 0;
}
static void update_initial_timestamps(AVFormatContext *s, int stream_index, int64_t dts){
static void update_initial_timestamps(AVFormatContext *s, int stream_index,
int64_t dts, int64_t pts)
{
AVStream *st= s->streams[stream_index];
AVPacketList *pktl= s->packet_buffer;
@ -613,6 +615,8 @@ static void update_initial_timestamps(AVFormatContext *s, int stream_index, int6
if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
st->start_time= pktl->pkt.pts;
}
if (st->start_time == AV_NOPTS_VALUE)
st->start_time = pts;
}
static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
@ -670,7 +674,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
/* PTS = presentation time stamp */
if (pkt->dts == AV_NOPTS_VALUE)
pkt->dts = st->last_IP_pts;
update_initial_timestamps(s, pkt->stream_index, pkt->dts);
update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
if (pkt->dts == AV_NOPTS_VALUE)
pkt->dts = st->cur_dts;
@ -696,7 +700,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
/* presentation is not delayed : PTS and DTS are the same */
if(pkt->pts == AV_NOPTS_VALUE)
pkt->pts = pkt->dts;
update_initial_timestamps(s, pkt->stream_index, pkt->pts);
update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
if(pkt->pts == AV_NOPTS_VALUE)
pkt->pts = st->cur_dts;
pkt->dts = pkt->pts;
@ -713,7 +717,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
if(pkt->dts == AV_NOPTS_VALUE)
pkt->dts= st->pts_buffer[0];
if(delay>1){
update_initial_timestamps(s, pkt->stream_index, pkt->dts); // this should happen on the first packet
update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
}
if(pkt->dts > st->cur_dts)
st->cur_dts = pkt->dts;

2
tests/libav.regression.ref
View File

@ -4,7 +4,7 @@ ffmpeg regression test
./tests/data/b-libav.avi CRC=0x400c29e9
786446e80ead936e5faa8f5908f19281 *./tests/data/b-libav.asf
339775 ./tests/data/b-libav.asf
./tests/data/b-libav.asf CRC=0x7f38e57b
./tests/data/b-libav.asf CRC=0x74113749
1ce78eeb6881ffe5b649a9b5105de919 *./tests/data/b-libav.rm
355405 ./tests/data/b-libav.rm
bdb7484c68db722f66ba1630cf79844c *./tests/data/b-libav.mpg