When given a stream starting at dts=0, it would previously consider
s->offset as uninitialized and set an offset when the second packet
was written, ending up writing two packets with dts=0. By initializing
this field to AV_NOPTS_VALUE, we make sure that we only initialize it
once, on the first packet.
Signed-off-by: Martin Storsjö <martin@martin.st>
AVRational time_base = s->streams[pkt->stream_index]->time_base;
int64_t offset = 0;
- if (!s->offset && pkt->dts != AV_NOPTS_VALUE &&
+ if (s->offset == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
(pkt->dts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
s->offset = -pkt->dts;
s->offset_timebase = time_base;
}
- if (s->offset)
+ if (s->offset != AV_NOPTS_VALUE)
offset = av_rescale_q(s->offset, s->offset_timebase, time_base);
if (pkt->dts != AV_NOPTS_VALUE)
ic = av_malloc(sizeof(AVFormatContext));
if (!ic) return ic;
avformat_get_context_defaults(ic);
+ ic->offset = AV_NOPTS_VALUE;
ic->internal = av_mallocz(sizeof(*ic->internal));
if (!ic->internal) {