[FFmpeg-trac] #8889(undetermined:new): mpegts with dvb_subtitle on udp output broken?

[FFmpeg]

#8889: mpegts with dvb_subtitle on udp output broken?
-------------------------------------+-------------------------------------
             Reporter:  barhom       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  mpegts       |               Blocked By:
  dvb_subtitle                       |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by barhom):

 I think I found out why I see a "glitch". It seems like when outputting to
 UDP there is some "waiting" time when there are no packets.

 Here is an example from tcpdump. Notice how there is a 3 second delay
 between packets.


 {{{
 09:57:38.262954 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:38.262964 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:38.262974 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:38.262982 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 752
 09:57:38.262992 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:38.263002 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 376
 09:57:38.263035 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 188
 09:57:41.544091 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:41.544109 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:41.544119 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:41.544129 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:41.544138 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316
 09:57:41.544148 IP 192.168.125.30.39625 > 239.200.0.1.1231: UDP, length
 1316

 }}}


 There is no such "delay" of 3 seconds when omitting the dvb_subtitles.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8889#comment:1>
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