[FFmpeg-trac] #5212(undetermined:new): Can't seek while using -re and -ss at the same time

[FFmpeg]

#5212: Can't seek while using -re and -ss at the same time
-------------------------------------+-------------------------------------
             Reporter:  groove       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 '''Summary of the bug:'''
 If i use ''-re'' while using ''-ss 10'', the video will be delayed by 10
 seconds, instead of skipping 10 seconds into the video, which is normal
 behavior while not using ''-re''

 '''How to reproduce:'''
 {{{
 ffmpeg -re -ss 10 -i test.mkv -c:v copy -c:a copy new.mkv
 }}}

 '''Output:'''
 {{{
 ffmpeg version N-78257-gdd57b31 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.9.2 (Debian 4.9.2-10)
   configuration: --prefix=/opt/ffmpeg --enable-libx264 --enable-libssh
 --enable-libfdk-aac --enable-libmp3lame --enable-libxvid --enable-libvpx
 --enable-openssl --enable-gpl --enable-nonfree
   libavutil      55. 17.100 / 55. 17.100
   libavcodec     57. 24.101 / 57. 24.101
   libavformat    57. 24.100 / 57. 24.100
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 28.100 /  6. 28.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, matroska,webm, from 'test.mkv':
   Metadata:
     ENCODER         : Lavf57.24.100
   Duration: 00:01:30.60, start: 0.000000, bitrate: 11347 kb/s
     Chapter #0:0: start 0.000000, end 5.463000
     Chapter #0:1: start 5.463000, end 93.508000
     Stream #0:0: Video: h264 (High), yuv420p, 1920x800, SAR 1:1 DAR 12:5,
 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
     Metadata:
       DURATION        : 00:01:30.590000000
     Stream #0:1: Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s
 (default)
     Metadata:
       DURATION        : 00:01:30.600000000
 Output #0, matroska, to 'new.mkv':
   Metadata:
     encoder         : Lavf57.24.100
     Chapter #0:0: start 0.000000, end 83.508000
     Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 1920x800 [SAR
 1:1 DAR 12:5], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default)
     Metadata:
       DURATION        : 00:01:30.590000000
     Stream #0:1: Audio: dts (DTS) ([1] [0][0] / 0x2001), 48000 Hz,
 5.1(side), 1536 kb/s (default)
     Metadata:
       DURATION        : 00:01:30.600000000
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #0:1 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 [matroska @ 0x3122200] failed to avoid negative pts -75 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 [matroska @ 0x3122200] failed to avoid negative pts -63 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 [matroska @ 0x3122200] failed to avoid negative pts -53 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 [matroska @ 0x3122200] failed to avoid negative pts -42 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 [matroska @ 0x3122200] failed to avoid negative pts -31 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 [matroska @ 0x3122200] failed to avoid negative pts -21 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 [matroska @ 0x3122200] failed to avoid negative pts -10 in stream 1.
 Try -avoid_negative_ts 1 as a possible workaround.
 frame= 1958 fps= 24 q=-1.0 Lsize=  113108kB time=00:01:20.59
 bitrate=11497.4kbits/s speed=   1x
 video:97980kB audio:15059kB subtitle:0kB other streams:0kB global
 headers:0kB muxing overhead: 0.061519%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5212>
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