[FFmpeg-devel] [PATCH v1] lavf/img2enc: add support for option strftime_source

[Jun Li]

On Wed, Apr 17, 2019 at 3:11 PM Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> 2019-04-15 8:43 GMT+02:00, Jun Li <junli1026 at gmail.com>:
> > Currently the strftime option generate timestamp based on generation
> > time. The new option would calcualte timestamp from source's
> > start_realtime and pkt->pts, try to generate a timestamp matches the
> > source starting time.
>
> > diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
> > index 8349840c96..16bb143ca6 100644
> > --- a/libavformat/rtsp.c
> > +++ b/libavformat/rtsp.c
> > @@ -2253,6 +2253,7 @@ redo:
> >                                          (uint64_t)
> > rtpctx->st->time_base.num * 1000000,
> >
> > rtpctx->st->time_base.den);
> >                      }
> > +                    av_dict_set_int(&s->metadata, "start_realtime",
> > s->start_time_realtime, 0);
>
> Is this change related?
>
> Carl Eugen
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Thanks Carl for review !
Yes, it is related. The value is passed into metadata so that image2enc to
get it during muxing.
The change on image2enc relies on metadata "start_realtime" and
"creation_time".

Best Regards,
Jun