[FFmpeg-trac] #4696(ffmpeg:new): Duration with -t before -i is actually value of -t plus value of -ss

FFmpeg trac at avcodec.org
Sun Jul 5 08:02:33 CEST 2015


#4696: Duration with -t before -i is actually value of -t plus value of -ss
---------------------------------+----------------------------------
             Reporter:  Piscium  |                    Owner:
                 Type:  defect   |                   Status:  new
             Priority:  normal   |                Component:  ffmpeg
              Version:  2.4.10   |               Resolution:
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+----------------------------------

Comment (by Piscium):

 Built with default options.

 -----------------------------------------

 $ ./ffmpeg -y -ss 10 -t 20 -i in.m4a -acodec copy -flags global_header
 out.m4a
 ffmpeg version N-73411-g5233f25 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.9.2 (GCC) 20150212 (Red Hat 4.9.2-6)
   configuration:
   libavutil      54. 28.100 / 54. 28.100
   libavcodec     56. 46.101 / 56. 46.101
   libavformat    56. 40.100 / 56. 40.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 20.100 /  5. 20.100
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  2.100 /  1.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.m4a':
   Metadata:
     major_brand     : dash
     minor_version   : 0
     compatible_brands: iso6mp41
     creation_time   : 2014-01-25 16:58:44
   Duration: 00:02:40.08, start: 0.000000, bitrate: 255 kb/s
     Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 253 kb/s (default)
     Metadata:
       creation_time   : 2014-01-25 16:58:44
       handler_name    : SoundHandler
 Output #0, ipod, to 'out.m4a':
   Metadata:
     major_brand     : dash
     minor_version   : 0
     compatible_brands: iso6mp41
     encoder         : Lavf56.40.100
     Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 253 kb/s (default)
     Metadata:
       creation_time   : 2014-01-25 16:58:44
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 size=     935kB time=00:00:30.00 bitrate= 255.3kbits/s
 video:0kB audio:929kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.621016%

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4696#comment:6>
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